I have my displays on my GTX 1060 set up with DisplayPort MST on one of them (the Dell U2414H) to try to cut down on a few cables. This works, in general, but there is a frustrating issue that I have confirmed does not exist with the Nvidia Windows driver: there is no way to control the screen brightness with software. On Linux, it seems that this is generally done with directly interacting with the display over DDC (i2c) with tools such as ddcutil, which works fine for the two directly connected monitors, but the Nvidia Linux driver does not expose a /dev/i2c-N for this third, MST-attached, monitor, even though the monitor supports DDC, which makes it impossible to adjust this display.
Under Windows, it is possible to use the win32 SetMonitorBrightness function to set the physical brightness of all my monitors and adjustments using this API function are reflected in the monitor’s on-screen display brightness menu. At the Windows API level, there is no difference with one of the displays running over MST. Therefore, this appears to be a flaw with the Nvidia Linux driver specifically.
This issue has been reported before here: DisplayPort Multi-Stream Transport (MST) and DCC/CI Control / Multimedia and Games / Arch Linux Forums
Interestingly, unlike what is reported in that thread, xset dpms force off does work on all the monitors.
I would really appreciate if it were fixed or an alternative brightness control mechanism offered, as it limits the usefulness of multi-monitor setups on Linux.
This has been observed on Nvidia driver version 460.32.03.
Logs of `ddcutil env -v` (LONG)
dev/linux - [master] » sudo ddcutil env -v
Output level: Verbose
Reporting DDC data errors: false
Trace groups active: none
Traced functions: none
Traced files: none
Force I2C slave address: false
User defined features: disabled
Performance and Retry Options:
Deferred sleep enabled: false
Sleep suppression (reduced sleeps) enabled: false
Dynamic sleep adjustment enabled: false
The following tests probe the runtime environment using multiple overlapping methods.
Current time (local): 2021-01-21 15:19:10 PST
Current time (UTC): 2021-01-21 23:19:10
Seconds since boot: 46790
*** Basic System Information ***
ddcutil version: 0.9.9
/proc/version:
Linux version 5.10.8-arch1-1 (linux@archlinux) (gcc (GCC) 10.2.0, GNU ld (GNU Binutils) 2.35.1) #1 SMP PREEMPT Sun, 17 Jan 2021 22:0
7:13 +0000
Architecture: x86_64
Distributor id: (null)
Release: (null)
Found a known architecture
/proc/cmdline:
initrd=\amd-ucode.img initrd=\initramfs-linux.img zfs=zroot/ROOT/default rw
Compiler information:
C standard: 201710
gcc compatible compiler:
Compiler version: 10.1.0
Processor information as reported by lscpu:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
Address sizes: 43 bits physical, 48 bits virtual
CPU(s): 24
On-line CPU(s) list: 0-23
Thread(s) per core: 2
Core(s) per socket: 12
Socket(s): 1
NUMA node(s): 1
Vendor ID: AuthenticAMD
CPU family: 23
Model: 113
Model name: AMD Ryzen 9 3900X 12-Core Processor
Stepping: 0
Frequency boost: enabled
CPU MHz: 2506.352
CPU max MHz: 3800.0000
CPU min MHz: 2200.0000
BogoMIPS: 7603.20
Virtualization: AMD-V
L1d cache: 384 KiB
L1i cache: 384 KiB
L2 cache: 6 MiB
L3 cache: 64 MiB
NUMA node0 CPU(s): 0-23
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Full AMD retpoline, IBPB conditional, STIBP conditional, RSB filling
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 h
t syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monito
r ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3
dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate sme ssbd mba
sev ibpb stibp vmmcall sev_es fsgsbase bmi1 avx2 smep bmi2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsa
ves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd arat npt lbrv svm_lock nrip_save tsc_scal
e vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif umip rdpid overflow_recov succor smca
DMI Information from /sys/class/dmi/id:
Motherboard vendor: Micro-Star International Co., Ltd.
Motherboard product name: MPG B550 GAMING PLUS (MS-7C56)
System vendor: Micro-Star International Co., Ltd.
System product name: MS-7C56
Chassis vendor: Micro-Star International Co., Ltd.
Chassis type: 3 - Desktop
Byte order checks:
Is big endian (local test): false
WORDS_BIGENDIAN macro (autoconf): not defined
__BYTE_ORDER__ macro (gcc): __ORDER_LITTLE_ENDIAN__
*** Primary Check 1: Identify video card and driver ***
Obtaining card and driver information from /sys...
Primary video controller at PCI address 0000:2b:00.0 (boot_vga flag is set)
Device class: x030000 VGA compatible controller
Vendor: x10de NVIDIA Corporation
Device: x1c03 GP106 [GeForce GTX 1060 6GB]
Subvendor/Subdevice: 1458/3716 Gigabyte Technology Co., Ltd
Driver name: nvidia
Driver version: 460.32.03
I2C device: i2c-3 name: NVIDIA i2c adapter 1 at 2b:00.0
I2C device: i2c-8 name: NVIDIA i2c adapter 8 at 2b:00.0
I2C device: i2c-6 name: NVIDIA i2c adapter 6 at 2b:00.0
I2C device: i2c-4 name: NVIDIA i2c adapter 2 at 2b:00.0
I2C device: i2c-9 name: NVIDIA i2c adapter 9 at 2b:00.0
I2C device: i2c-7 name: NVIDIA i2c adapter 7 at 2b:00.0
I2C device: i2c-5 name: NVIDIA i2c adapter 4 at 2b:00.0
*** Primary Check 2: Check that /dev/i2c-* exist and writable ***
Current user: root (0)
Checking /dev/i2c-* devices...
Unless the system is using the AMD proprietary driver fglrx, devices /dev/i2c-*
must exist and the logged on user must have read/write permission for those
devices (or at least those devices associated with monitors).
Typically, this access is enabled by:
- setting the group for /dev/i2c-* to i2c
- setting group RW permissions for /dev/i2c-*
- making the current user a member of group i2c
Alternatively, this can be enabled by just giving everyone RW permission
The following tests probe for these conditions.
Checking for /dev/i2c-* devices...
crw------- 1 root root 89, 0 Jan 21 14:48 /dev/i2c-0
crw------- 1 root root 89, 1 Jan 21 14:48 /dev/i2c-1
crw------- 1 root root 89, 2 Jan 21 14:48 /dev/i2c-2
crw------- 1 root root 89, 3 Jan 21 14:48 /dev/i2c-3
crw------- 1 root root 89, 4 Jan 21 14:48 /dev/i2c-4
crw------- 1 root root 89, 5 Jan 21 14:48 /dev/i2c-5
crw------- 1 root root 89, 6 Jan 21 14:48 /dev/i2c-6
crw------- 1 root root 89, 7 Jan 21 14:48 /dev/i2c-7
crw------- 1 root root 89, 8 Jan 21 14:48 /dev/i2c-8
crw------- 1 root root 89, 9 Jan 21 14:48 /dev/i2c-9
Current user (root) has RW access to all /dev/i2c-* devices.
Checking for group i2c...
Group i2c does not exist
Looking for udev rules files that reference i2c:
Checking rules directory /lib/udev/rules.d:
/lib/udev/rules.d/60-autosuspend.rules:SUBSYSTEM=="i2c", ATTR{name}=="cyapa", \
/lib/udev/rules.d/60-sensor.rules:SUBSYSTEM=="iio", KERNEL=="iio*", SUBSYSTEMS=="usb|i2c|platform", \
Checking rules directory /run/udev/rules.d:
grep: /run/udev/rules.d/*rules: No such file or directory
Checking rules directory /etc/udev/rules.d:
grep: /etc/udev/rules.d/*rules: No such file or directory
*** Primary Check 3: Check that module i2c_dev is loaded ***
Checking for module i2c_dev...
Module i2c-dev is NOT built into kernel
Loadable i2c-dev module found
Module i2c_dev is loaded
Check that kernel module i2c_dev is being loaded by examining files where this would be specified...
grep: /etc/modules: No such file or directory
/etc/modules-load.d/i2c-dev.conf:i2c-dev
grep: /run/modules-load.d/*conf: No such file or directory
Check for any references to i2c_dev in /etc/modprobe.d ...
grep: /etc/modprobe.d/*conf: No such file or directory
grep: /run/modprobe.d/*conf: No such file or directory
*** Primary Check 4: Driver specific checks ***
Performing driver specific checks...
Checking for special settings for proprietary Nvidia driver
(Needed for some newer Nvidia cards).
grep: /etc/X11/xorg.conf: No such file or directory
grep: /etc/X11/xorg.conf.d/*: No such file or directory
*** Additional probes ***
Scanning /proc/modules for driver environment...
Found other loaded module: i2c_dev
Found video driver module: nvidia
Found other loaded module: drm_kms_helper
Found other loaded module: i2c_piix4
Loaded drm module depends on: nvidia_drm,drm_kms_helper,
Testing if modules are loaded using /sys...
Module amdgpu is NOT loaded
Module fbdev is NOT loaded
Module fglrx is NOT loaded
Module fturbo is NOT loaded
Module i915 is NOT loaded
Module mgag200 is NOT loaded
Module nvidia is loaded
Module nouveau is NOT loaded
Module radeon is NOT loaded
Module vboxvideo is NOT loaded
Module vc4 is NOT loaded
Module drm is loaded
Module i2c_algo_bit is NOT loaded
Module i2c_dev is loaded
Module i2c_piix4 is loaded
Module ddcci is NOT loaded
Examining /sys/bus/i2c/devices...
/sys/bus/i2c/devices/i2c-3/name: NVIDIA i2c adapter 1 at 2b:00.0
/sys/bus/i2c/devices/i2c-1/name: SMBus PIIX4 adapter port 2 at 0b00
/sys/bus/i2c/devices/i2c-8/name: NVIDIA i2c adapter 8 at 2b:00.0
/sys/bus/i2c/devices/i2c-6/name: NVIDIA i2c adapter 6 at 2b:00.0
/sys/bus/i2c/devices/i2c-4/name: NVIDIA i2c adapter 2 at 2b:00.0
/sys/bus/i2c/devices/i2c-2/name: SMBus PIIX4 adapter port 1 at 0b20
/sys/bus/i2c/devices/i2c-0/name: SMBus PIIX4 adapter port 0 at 0b00
/sys/bus/i2c/devices/i2c-9/name: NVIDIA i2c adapter 9 at 2b:00.0
/sys/bus/i2c/devices/i2c-7/name: NVIDIA i2c adapter 7 at 2b:00.0
/sys/bus/i2c/devices/i2c-5/name: NVIDIA i2c adapter 4 at 2b:00.0
Examining /proc/driver/nvidia:
/proc/driver/nvidia/version:
NVRM version: NVIDIA UNIX x86_64 Kernel Module 460.32.03 Sun Dec 27 19:00:34 UTC 2020
GCC version: gcc version 10.2.0 (GCC)
/proc/driver/nvidia/registry:
Binary: ""
/proc/driver/nvidia/params:
ResmanDebugLevel: 4294967295
RmLogonRC: 1
ModifyDeviceFiles: 1
DeviceFileUID: 0
DeviceFileGID: 0
DeviceFileMode: 438
InitializeSystemMemoryAllocations: 1
UsePageAttributeTable: 4294967295
EnableMSI: 1
RegisterForACPIEvents: 1
EnablePCIeGen3: 0
MemoryPoolSize: 0
KMallocHeapMaxSize: 0
VMallocHeapMaxSize: 0
IgnoreMMIOCheck: 0
TCEBypassMode: 0
EnableStreamMemOPs: 0
EnableBacklightHandler: 1
EnableUserNUMAManagement: 1
NvLinkDisable: 0
RmProfilingAdminOnly: 1
PreserveVideoMemoryAllocations: 0
EnableS0ixPowerManagement: 0
S0ixPowerManagementVideoMemoryThreshold: 256
DynamicPowerManagement: 0
DynamicPowerManagementVideoMemoryThreshold: 200
RegisterPCIDriver: 1
EnablePCIERelaxedOrderingMode: 0
RegistryDwords: ""
RegistryDwordsPerDevice: ""
RmMsg: ""
GpuBlacklist: ""
TemporaryFilePath: ""
PCI bus id: 0000:2b:00.0
/proc/driver/nvidia/gpus/0000:2b:00.0/information:
Model: GeForce GTX 1060 6GB
IRQ: 95
GPU UUID: GPU-6d3b9e03-e5a1-30c3-6a40-f874c9fa55bc
Video BIOS: 86.06.0e.00.6d
Bus Type: PCIe
DMA Size: 47 bits
DMA Mask: 0x7fffffffffff
Bus Location: 0000:2b:00.0
Device Minor: 0
Blacklisted: No
/proc/driver/nvidia/gpus/0000:2b:00.0/registry:
Binary: ""
Examining I2C buses, as detected by I2C layer...
Current time (local): 2021-01-21 15:19:10 PST
Current time (UTC): 2021-01-21 23:19:10
Seconds since boot: 46790
Detected 7 non-ignorable I2C buses:
Bus /dev/i2c-3 found: true
Bus /dev/i2c-3 probed: true
Bus accessible: true
Bus is eDP: false
Valid bus name checked: true
I2C bus has valid name: true
Address 0x37 present: false
Address 0x50 present: false
Bus /dev/i2c-4 found: true
Bus /dev/i2c-4 probed: true
Bus accessible: true
Bus is eDP: false
Valid bus name checked: true
I2C bus has valid name: true
Address 0x37 present: false
Address 0x50 present: false
Bus /dev/i2c-5 found: true
Bus /dev/i2c-5 probed: true
Bus accessible: true
Bus is eDP: false
Valid bus name checked: true
I2C bus has valid name: true
Address 0x37 present: false
Address 0x50 present: false
Bus /dev/i2c-6 found: true
Bus /dev/i2c-6 probed: true
Bus accessible: true
Bus is eDP: false
Valid bus name checked: true
I2C bus has valid name: true
Address 0x37 present: false
Address 0x50 present: false
Bus /dev/i2c-7 found: true
Bus /dev/i2c-7 probed: true
Bus accessible: true
Bus is eDP: false
Valid bus name checked: true
I2C bus has valid name: true
Address 0x37 present: false
Address 0x50 present: false
Bus /dev/i2c-8 found: true
Bus /dev/i2c-8 probed: true
Bus accessible: true
Bus is eDP: false
Valid bus name checked: true
I2C bus has valid name: true
Address 0x37 present: true
Address 0x50 present: true
EDID synopsis:
Mfg id: DEL
Model: DELL U2715H
Serial number: H7YCC4BS0BRL
Manufacture year: 2014
EDID version: 1.4
Product code: 53349
Binary sn: 809652812 (0x3042524c)
Extra descriptor:
Video input definition: 0xa5 - Digital Input (DisplayPort)
Supported features:
DPMS active-off
Digital display type: RGB 4:4:4 + YCrCb 4:2:2
Standard sRGB color space: True
White x,y: 0.313, 0.329
Red x,y: 0.661, 0.332
Green x,y: 0.302, 0.613
Blue x,y: 0.149, 0.060
Extension blocks: 1
EDID source:
EDID hex dump:
+0 +4 +8 +c 0 4 8 c
+0000 00 ff ff ff ff ff ff 00 10 ac 65 d0 4c 52 42 30 ..........e.LRB0
+0010 30 18 01 04 a5 3c 22 78 3e 44 55 a9 55 4d 9d 26 0....<"x>DU.UM.&
+0020 0f 50 54 a5 4b 00 b3 00 d1 00 71 4f a9 40 81 80 .PT.K.....qO.@..
+0030 77 80 01 01 01 01 56 5e 00 a0 a0 a0 29 50 30 20 w.....V^....)P0
+0040 35 00 55 50 21 00 00 1a 00 00 00 ff 00 48 37 59 5.UP!........H7Y
+0050 43 43 34 42 53 30 42 52 4c 0a 00 00 00 fc 00 44 CC4BS0BRL......D
+0060 45 4c 4c 20 55 32 37 31 35 48 0a 20 00 00 00 fd ELL U2715H. ....
+0070 00 38 56 1e 71 1e 01 0a 20 20 20 20 20 20 01 03 .8V.q... ..
Bus /dev/i2c-9 found: true
Bus /dev/i2c-9 probed: true
Bus accessible: true
Bus is eDP: false
Valid bus name checked: true
I2C bus has valid name: true
Address 0x37 present: true
Address 0x50 present: true
EDID synopsis:
Mfg id: DEL
Model: DELL U2515H
Serial number: FJYC769I0BBL
Manufacture year: 2016
EDID version: 1.4
Product code: 53359
Binary sn: 809648716 (0x3042424c)
Extra descriptor:
Video input definition: 0xa5 - Digital Input (DisplayPort)
Supported features:
DPMS active-off
Digital display type: RGB 4:4:4 + YCrCb 4:2:2
Standard sRGB color space: True
White x,y: 0.313, 0.329
Red x,y: 0.661, 0.332
Green x,y: 0.302, 0.613
Blue x,y: 0.149, 0.060
Extension blocks: 1
EDID source:
EDID hex dump:
+0 +4 +8 +c 0 4 8 c
+0000 00 ff ff ff ff ff ff 00 10 ac 6f d0 4c 42 42 30 ..........o.LBB0
+0010 25 1a 01 04 a5 37 1f 78 3e 44 55 a9 55 4d 9d 26 %....7.x>DU.UM.&
+0020 0f 50 54 a5 4b 00 b3 00 d1 00 71 4f a9 40 81 80 .PT.K.....qO.@..
+0030 77 80 01 01 01 01 56 5e 00 a0 a0 a0 29 50 30 20 w.....V^....)P0
+0040 35 00 29 37 21 00 00 1a 00 00 00 ff 00 46 4a 59 5.)7!........FJY
+0050 43 37 36 39 49 30 42 42 4c 0a 00 00 00 fc 00 44 C769I0BBL......D
+0060 45 4c 4c 20 55 32 35 31 35 48 0a 20 00 00 00 fd ELL U2515H. ....
+0070 00 38 56 1e 71 1e 01 0a 20 20 20 20 20 20 01 7d .8V.q... .}
xrandr connection report:
Checking for possibly conflicting programs...
root 552519 1.2 0.0 267532 8324 ? Ssl 15:16 0:01 /usr/libexec/ddccontrol/ddccontrol_service
Examining I2C buses using i2cdetect...
Current time (local): 2021-01-21 15:19:10 PST
Current time (UTC): 2021-01-21 23:19:10
Seconds since boot: 46790
Device /dev/i2c-0 is a SMBus or other ignorable device. Skipping i2cdetect.
Device /dev/i2c-1 is a SMBus or other ignorable device. Skipping i2cdetect.
Device /dev/i2c-2 is a SMBus or other ignorable device. Skipping i2cdetect.
Probing bus /dev/i2c-3 using command "i2cdetect -y 3"
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- 48 -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Probing bus /dev/i2c-4 using command "i2cdetect -y 4"
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Probing bus /dev/i2c-5 using command "i2cdetect -y 5"
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Probing bus /dev/i2c-6 using command "i2cdetect -y 6"
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Probing bus /dev/i2c-7 using command "i2cdetect -y 7"
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Probing bus /dev/i2c-8 using command "i2cdetect -y 8"
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- 37 -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Probing bus /dev/i2c-9 using command "i2cdetect -y 9"
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- 37 -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Performing basic scan of I2C devices using local sysenv functions...
Current time (local): 2021-01-21 15:19:14 PST
Current time (UTC): 2021-01-21 23:19:14
Seconds since boot: 46794
Examining device /dev/i2c-0...
Device /dev/i2c-0 is a SMBus or other ignorable device. Skipping.
Examining device /dev/i2c-1...
Device /dev/i2c-1 is a SMBus or other ignorable device. Skipping.
Examining device /dev/i2c-2...
Device /dev/i2c-2 is a SMBus or other ignorable device. Skipping.
Examining device /dev/i2c-3...
Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE,
I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA,
I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA,
I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_READ_BLOCK_DATA,
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
Unable to read EDID, psc=EIO(-5): Input/output error
Trying simple VCP read of feature 0x10...
Attempt 1 to read feature returned hard error: EIO(-5): Input/output error
DDC communication failed.
Examining device /dev/i2c-4...
Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE,
I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA,
I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA,
I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_READ_BLOCK_DATA,
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
Unable to read EDID, psc=EIO(-5): Input/output error
Trying simple VCP read of feature 0x10...
Attempt 1 to read feature returned hard error: EIO(-5): Input/output error
DDC communication failed.
Examining device /dev/i2c-5...
Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE,
I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA,
I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA,
I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_READ_BLOCK_DATA,
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
Unable to read EDID, psc=EIO(-5): Input/output error
Trying simple VCP read of feature 0x10...
Attempt 1 to read feature returned hard error: EIO(-5): Input/output error
DDC communication failed.
Examining device /dev/i2c-6...
Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE,
I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA,
I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA,
I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_READ_BLOCK_DATA,
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
Unable to read EDID, psc=EIO(-5): Input/output error
Trying simple VCP read of feature 0x10...
Attempt 1 to read feature returned hard error: EIO(-5): Input/output error
DDC communication failed.
Examining device /dev/i2c-7...
Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE,
I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA,
I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA,
I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_READ_BLOCK_DATA,
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
Unable to read EDID, psc=EIO(-5): Input/output error
Trying simple VCP read of feature 0x10...
Attempt 1 to read feature returned hard error: EIO(-5): Input/output error
DDC communication failed.
Examining device /dev/i2c-8...
Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE,
I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA,
I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA,
I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_READ_BLOCK_DATA,
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
Raw EDID:
+0 +4 +8 +c 0 4 8 c
+0000 00 ff ff ff ff ff ff 00 10 ac 65 d0 4c 52 42 30 ..........e.LRB0
+0010 30 18 01 04 a5 3c 22 78 3e 44 55 a9 55 4d 9d 26 0....<"x>DU.UM.&
+0020 0f 50 54 a5 4b 00 b3 00 d1 00 71 4f a9 40 81 80 .PT.K.....qO.@..
+0030 77 80 01 01 01 01 56 5e 00 a0 a0 a0 29 50 30 20 w.....V^....)P0
+0040 35 00 55 50 21 00 00 1a 00 00 00 ff 00 48 37 59 5.UP!........H7Y
+0050 43 43 34 42 53 30 42 52 4c 0a 00 00 00 fc 00 44 CC4BS0BRL......D
+0060 45 4c 4c 20 55 32 37 31 35 48 0a 20 00 00 00 fd ELL U2715H. ....
+0070 00 38 56 1e 71 1e 01 0a 20 20 20 20 20 20 01 03 .8V.q... ..
EDID synopsis:
Mfg id: DEL
Model: DELL U2715H
Serial number: H7YCC4BS0BRL
Manufacture year: 2014
EDID version: 1.4
Product code: 53349
Binary sn: 809652812 (0x3042524c)
Extra descriptor:
Video input definition: 0xa5 - Digital Input (DisplayPort)
Supported features:
DPMS active-off
Digital display type: RGB 4:4:4 + YCrCb 4:2:2
Standard sRGB color space: True
White x,y: 0.313, 0.329
Red x,y: 0.661, 0.332
Green x,y: 0.302, 0.613
Blue x,y: 0.149, 0.060
Extension blocks: 1
EDID source:
Trying simple VCP read of feature 0x10...
read() returned 6e 88 02 00 10 00 00 64 00 3c fc
Attempt 1 to read feature succeeded.
DDC communication succeeded
Examining device /dev/i2c-9...
Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE,
I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA,
I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA,
I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_READ_BLOCK_DATA,
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
Raw EDID:
+0 +4 +8 +c 0 4 8 c
+0000 00 ff ff ff ff ff ff 00 10 ac 6f d0 4c 42 42 30 ..........o.LBB0
+0010 25 1a 01 04 a5 37 1f 78 3e 44 55 a9 55 4d 9d 26 %....7.x>DU.UM.&
+0020 0f 50 54 a5 4b 00 b3 00 d1 00 71 4f a9 40 81 80 .PT.K.....qO.@..
+0030 77 80 01 01 01 01 56 5e 00 a0 a0 a0 29 50 30 20 w.....V^....)P0
+0040 35 00 29 37 21 00 00 1a 00 00 00 ff 00 46 4a 59 5.)7!........FJY
+0050 43 37 36 39 49 30 42 42 4c 0a 00 00 00 fc 00 44 C769I0BBL......D
+0060 45 4c 4c 20 55 32 35 31 35 48 0a 20 00 00 00 fd ELL U2515H. ....
+0070 00 38 56 1e 71 1e 01 0a 20 20 20 20 20 20 01 7d .8V.q... .}
EDID synopsis:
Mfg id: DEL
Model: DELL U2515H
Serial number: FJYC769I0BBL
Manufacture year: 2016
EDID version: 1.4
Product code: 53359
Binary sn: 809648716 (0x3042424c)
Extra descriptor:
Video input definition: 0xa5 - Digital Input (DisplayPort)
Supported features:
DPMS active-off
Digital display type: RGB 4:4:4 + YCrCb 4:2:2
Standard sRGB color space: True
White x,y: 0.313, 0.329
Red x,y: 0.661, 0.332
Green x,y: 0.302, 0.613
Blue x,y: 0.149, 0.060
Extension blocks: 1
EDID source:
Trying simple VCP read of feature 0x10...
read() returned 6e 88 02 00 10 00 00 64 00 3c fc
Attempt 1 to read feature succeeded.
DDC communication succeeded
EDIDs reported by X11 for connected xrandr outputs:
xrandr output: DP-2.8
Raw EDID:
+0 +4 +8 +c 0 4 8 c
+0000 00 ff ff ff ff ff ff 00 10 ac 65 d0 4c 52 42 30 ..........e.LRB0
+0010 30 18 01 04 a5 3c 22 78 3e 44 55 a9 55 4d 9d 26 0....<"x>DU.UM.&
+0020 0f 50 54 a5 4b 00 b3 00 d1 00 71 4f a9 40 81 80 .PT.K.....qO.@..
+0030 77 80 01 01 01 01 56 5e 00 a0 a0 a0 29 50 30 20 w.....V^....)P0
+0040 35 00 55 50 21 00 00 1a 00 00 00 ff 00 48 37 59 5.UP!........H7Y
+0050 43 43 34 42 53 30 42 52 4c 0a 00 00 00 fc 00 44 CC4BS0BRL......D
+0060 45 4c 4c 20 55 32 37 31 35 48 0a 20 00 00 00 fd ELL U2715H. ....
+0070 00 38 56 1e 71 1e 01 0a 20 20 20 20 20 20 01 03 .8V.q... ..
EDID synopsis:
Mfg id: DEL
Model: DELL U2715H
Serial number: H7YCC4BS0BRL
Manufacture year: 2014
EDID version: 1.4
Product code: 53349
Binary sn: 809652812 (0x3042524c)
Extra descriptor:
Video input definition: 0xa5 - Digital Input (DisplayPort)
Supported features:
DPMS active-off
Digital display type: RGB 4:4:4 + YCrCb 4:2:2
Standard sRGB color space: True
White x,y: 0.313, 0.329
Red x,y: 0.661, 0.332
Green x,y: 0.302, 0.613
Blue x,y: 0.149, 0.060
Extension blocks: 1
EDID source:
xrandr output: DP-2.1
Raw EDID:
+0 +4 +8 +c 0 4 8 c
+0000 00 ff ff ff ff ff ff 00 10 ac a3 a0 4c 33 47 33 ............L3G3
+0010 30 18 01 04 a5 35 1e 78 3e 7e 75 a7 55 52 9c 27 0....5.x>~u.UR.'
+0020 0f 50 54 a5 4b 00 71 4f 81 80 a9 c0 a9 40 d1 c0 .PT.K.qO.....@..
+0030 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c .......:..q8-@X,
+0040 45 00 0f 28 21 00 00 1e 00 00 00 ff 00 52 39 46 E..(!........R9F
+0050 31 50 34 42 53 33 47 33 4c 0a 00 00 00 fc 00 44 1P4BS3G3L......D
+0060 45 4c 4c 20 55 32 34 31 34 48 0a 20 00 00 00 fd ELL U2414H. ....
+0070 00 38 4c 1e 53 11 00 0a 20 20 20 20 20 20 01 df .8L.S... ..
EDID synopsis:
Mfg id: DEL
Model: DELL U2414H
Serial number: R9F1P4BS3G3L
Manufacture year: 2014
EDID version: 1.4
Product code: 41123
Binary sn: 860304204 (0x3347334c)
Extra descriptor:
Video input definition: 0xa5 - Digital Input (DisplayPort)
Supported features:
DPMS active-off
Digital display type: RGB 4:4:4 + YCrCb 4:2:2
Standard sRGB color space: True
White x,y: 0.313, 0.329
Red x,y: 0.653, 0.335
Green x,y: 0.323, 0.611
Blue x,y: 0.153, 0.062
Extension blocks: 1
EDID source:
(query_x11 ) EDID not found
xrandr output: DP-4
Raw EDID:
+0 +4 +8 +c 0 4 8 c
+0000 00 ff ff ff ff ff ff 00 10 ac 6f d0 4c 42 42 30 ..........o.LBB0
+0010 25 1a 01 04 a5 37 1f 78 3e 44 55 a9 55 4d 9d 26 %....7.x>DU.UM.&
+0020 0f 50 54 a5 4b 00 b3 00 d1 00 71 4f a9 40 81 80 .PT.K.....qO.@..
+0030 77 80 01 01 01 01 56 5e 00 a0 a0 a0 29 50 30 20 w.....V^....)P0
+0040 35 00 29 37 21 00 00 1a 00 00 00 ff 00 46 4a 59 5.)7!........FJY
+0050 43 37 36 39 49 30 42 42 4c 0a 00 00 00 fc 00 44 C769I0BBL......D
+0060 45 4c 4c 20 55 32 35 31 35 48 0a 20 00 00 00 fd ELL U2515H. ....
+0070 00 38 56 1e 71 1e 01 0a 20 20 20 20 20 20 01 7d .8V.q... .}
EDID synopsis:
Mfg id: DEL
Model: DELL U2515H
Serial number: FJYC769I0BBL
Manufacture year: 2016
EDID version: 1.4
Product code: 53359
Binary sn: 809648716 (0x3042424c)
Extra descriptor:
Video input definition: 0xa5 - Digital Input (DisplayPort)
Supported features:
DPMS active-off
Digital display type: RGB 4:4:4 + YCrCb 4:2:2
Standard sRGB color space: True
White x,y: 0.313, 0.329
Red x,y: 0.661, 0.332
Green x,y: 0.302, 0.613
Blue x,y: 0.149, 0.060
Extension blocks: 1
EDID source:
Probing I2C devices using udev, susbsystem i2c-dev...
Current time (local): 2021-01-21 15:19:14 PST
Current time (UTC): 2021-01-21 23:19:14
Seconds since boot: 46794
Summary of udev I2C devices
Subsystem Sysname Sysattr Name Devpath
i2c-dev i2c-0 SMBus PIIX4 adapter port 0 at 0b00 /devices/pci0000:00/0000:00:14.0/i2c-0/i2c-dev/i2c-0
i2c-dev i2c-1 SMBus PIIX4 adapter port 2 at 0b00 /devices/pci0000:00/0000:00:14.0/i2c-1/i2c-dev/i2c-1
i2c-dev i2c-2 SMBus PIIX4 adapter port 1 at 0b20 /devices/pci0000:00/0000:00:14.0/i2c-2/i2c-dev/i2c-2
i2c-dev i2c-3 NVIDIA i2c adapter 1 at 2b:00.0 /devices/pci0000:00/0000:00:03.1/0000:2b:00.0/i2c-3/i2c-dev/i2c-3
i2c-dev i2c-4 NVIDIA i2c adapter 2 at 2b:00.0 /devices/pci0000:00/0000:00:03.1/0000:2b:00.0/i2c-4/i2c-dev/i2c-4
i2c-dev i2c-5 NVIDIA i2c adapter 4 at 2b:00.0 /devices/pci0000:00/0000:00:03.1/0000:2b:00.0/i2c-5/i2c-dev/i2c-5
i2c-dev i2c-6 NVIDIA i2c adapter 6 at 2b:00.0 /devices/pci0000:00/0000:00:03.1/0000:2b:00.0/i2c-6/i2c-dev/i2c-6
i2c-dev i2c-7 NVIDIA i2c adapter 7 at 2b:00.0 /devices/pci0000:00/0000:00:03.1/0000:2b:00.0/i2c-7/i2c-dev/i2c-7
i2c-dev i2c-8 NVIDIA i2c adapter 8 at 2b:00.0 /devices/pci0000:00/0000:00:03.1/0000:2b:00.0/i2c-8/i2c-dev/i2c-8
i2c-dev i2c-9 NVIDIA i2c adapter 9 at 2b:00.0 /devices/pci0000:00/0000:00:03.1/0000:2b:00.0/i2c-9/i2c-dev/i2c-9
Looking for udev devices with name attribute DPMST...
Summary of udev DPMST devices...
No devices detected
amdgpu configuration parameters:
Examining configuration files...
DKMS modules:
Kernel I2C configuration settings:
grep: /boot/config-5.10.8-arch1-1: No such file or directory
Kernel AMDGPU configuration settings:
grep: /boot/config-5.10.8-arch1-1: No such file or directory
Examining system logs...
Current timestamps:
Current time (local): 2021-01-21 15:19:14 PST
Current time (UTC): 2021-01-21 23:19:14
Seconds since boot: 46794
Scanning dmesg output for I2C related entries...
Executing command: dmesg
[ 0.682894] ACPI: Added _OSI(Linux-Dell-Video)
[ 1.563098] ata1.00: supports DRM functions and may not be fully accessible
[ 1.565922] ata1.00: supports DRM functions and may not be fully accessible
[ 2.972174] ata5.00: supports DRM functions and may not be fully accessible
[ 2.975094] ata5.00: supports DRM functions and may not be fully accessible
[ 4.029885] systemd[1]: Starting Load Kernel Module drm...
[ 4.054003] systemd[1]: modprobe@drm.service: Succeeded.
[ 4.054297] systemd[1]: Finished Load Kernel Module drm.
[ 4.054650] audit: type=1130 audit(1611224364.466:4): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=modprobe@drm comm="
systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 4.054652] audit: type=1131 audit(1611224364.466:5): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=modprobe@drm comm="
systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 4.477321] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input3
[ 4.477362] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input4
[ 4.477396] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input5
[ 4.477431] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input6
[ 4.477464] input: HDA NVidia HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input7
[ 4.477496] input: HDA NVidia HDMI/DP,pcm=11 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input8
[ 4.477529] input: HDA NVidia HDMI/DP,pcm=12 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input9
[ 5.152855] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
[ 5.153303] nvidia 0000:2b:00.0: enabling device (0002 -> 0003)
[ 5.154162] nvidia 0000:2b:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=none
[ 5.270907] NVRM: loading NVIDIA UNIX x86_64 Kernel Module 460.32.03 Sun Dec 27 19:00:34 UTC 2020
[ 5.453041] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms 460.32.03 Sun Dec 27 18:51:11 UTC 2
020
[ 5.458449] [drm] [nvidia-drm] [GPU ID 0x00002b00] Loading driver
[ 5.458453] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:2b:00.0 on minor 0
Scanning journalctl output for I2C related entries...
Executing command: journalctl --no-pager --boot
Jan 21 02:19:24 tail-bot kernel: ACPI: Added _OSI(Linux-Dell-Video)
Jan 21 02:19:24 tail-bot kernel: ata1.00: supports DRM functions and may not be fully accessible
Jan 21 02:19:24 tail-bot kernel: ata1.00: supports DRM functions and may not be fully accessible
Jan 21 02:19:24 tail-bot kernel: ata5.00: supports DRM functions and may not be fully accessible
Jan 21 02:19:24 tail-bot kernel: ata5.00: supports DRM functions and may not be fully accessible
Jan 21 02:19:24 tail-bot systemd[1]: Starting Load Kernel Module drm...
Jan 21 02:19:24 tail-bot systemd[1]: modprobe@drm.service: Succeeded.
Jan 21 02:19:24 tail-bot systemd[1]: Finished Load Kernel Module drm.
Jan 21 02:19:24 tail-bot kernel: audit: type=1130 audit(1611224364.466:4): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=m
odprobe@drm comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Jan 21 02:19:24 tail-bot kernel: audit: type=1131 audit(1611224364.466:5): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=m
odprobe@drm comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Jan 21 02:19:24 tail-bot audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=modprobe@drm comm="systemd"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Jan 21 02:19:24 tail-bot audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=modprobe@drm comm="systemd"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Jan 21 02:19:24 tail-bot kernel: input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/inp
ut3
Jan 21 02:19:24 tail-bot kernel: input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/inp
ut4
Jan 21 02:19:24 tail-bot kernel: input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/inp
ut5
Jan 21 02:19:24 tail-bot kernel: input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/inp
ut6
Jan 21 02:19:24 tail-bot kernel: input: HDA NVidia HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/in
put7
Jan 21 02:19:24 tail-bot kernel: input: HDA NVidia HDMI/DP,pcm=11 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/in
put8
Jan 21 02:19:24 tail-bot kernel: input: HDA NVidia HDMI/DP,pcm=12 as /devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/in
put9
Jan 21 02:19:25 tail-bot kernel: nvidia-nvlink: Nvlink Core is being initialized, major device number 237
Jan 21 02:19:25 tail-bot kernel: nvidia 0000:2b:00.0: enabling device (0002 -> 0003)
Jan 21 02:19:25 tail-bot kernel: nvidia 0000:2b:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=none
Jan 21 02:19:25 tail-bot kernel: NVRM: loading NVIDIA UNIX x86_64 Kernel Module 460.32.03 Sun Dec 27 19:00:34 UTC 2020
Jan 21 02:19:25 tail-bot kernel: nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms 460.32.03 Sun Dec
27 18:51:11 UTC 2020
Jan 21 02:19:25 tail-bot kernel: [drm] [nvidia-drm] [GPU ID 0x00002b00] Loading driver
Jan 21 02:19:25 tail-bot kernel: [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:2b:00.0 on minor 0
Jan 21 14:42:12 tail-bot dbus-daemon[1307]: [system] Activating via systemd: service name='org.freedesktop.home1' unit='dbus-org.
freedesktop.home1.service' requested by ':1.207' (uid=0 pid=505248 comm="sudo usermod -a -G video jade ")
Jan 21 14:42:12 tail-bot sudo[505248]: jade : TTY=pts/3 ; PWD=/home/jade/dev/linux ; USER=root ; COMMAND=/usr/bin/usermod -a
-G video jade
Jan 21 14:42:12 tail-bot usermod[505249]: add 'jade' to group 'video'
Jan 21 14:42:12 tail-bot usermod[505249]: add 'jade' to shadow group 'video'
Jan 21 15:16:38 tail-bot ddccontrol_service[552539]: nvidia_open: mmap failed: Operation not permitted
Jan 21 15:17:12 tail-bot ddccontrol_service[552539]: nvidia_open: mmap failed: Operation not permitted
Scanning file: /var/log/Xorg.0.log
Limiting output to first 200 relevant lines...
[ 7.324] X.Org Video Driver: 24.1
[ 7.325] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 7.326] (**) OutputClass "nvidia" ModulePath extended to "/usr/lib/nvidia/xorg,/usr/lib/xorg/modules,/usr/lib/xorg/modules"
[ 7.333] (II) Applying OutputClass "nvidia" to /dev/dri/card0
[ 7.333] loading driver: nvidia
[ 7.333] (==) Matched nvidia as autoconfigured driver 0
[ 7.333] (==) Matched nouveau as autoconfigured driver 1
[ 7.333] (==) Matched fbdev as autoconfigured driver 4
[ 7.333] (II) LoadModule: "nvidia"
[ 7.333] (II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
[ 7.337] (II) Module nvidia: vendor="NVIDIA Corporation"
[ 7.337] Module class: X.Org Video Driver
[ 7.338] (II) LoadModule: "nouveau"
[ 7.338] (WW) Warning, couldn't open module nouveau
[ 7.338] (EE) Failed to load module "nouveau" (module does not exist, 0)
[ 7.340] Module class: X.Org Video Driver
[ 7.340] ABI class: X.Org Video Driver, version 24.1
[ 7.340] (II) LoadModule: "fbdev"
[ 7.340] (WW) Warning, couldn't open module fbdev
[ 7.340] (EE) Failed to load module "fbdev" (module does not exist, 0)
[ 7.340] (II) NVIDIA dlloader X Driver 460.32.03 Sun Dec 27 18:56:00 UTC 2020
[ 7.340] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[ 7.344] (II) NVIDIA(0): Creating default Display subsection in Screen section
[ 7.344] (==) NVIDIA(0): Depth 24, (==) framebuffer bpp 32
[ 7.344] (==) NVIDIA(0): RGB weight 888
[ 7.344] (==) NVIDIA(0): Default visual is TrueColor
[ 7.344] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
[ 7.344] (II) Applying OutputClass "nvidia" options to /dev/dri/card0
[ 7.344] (**) NVIDIA(0): Option "AllowEmptyInitialConfiguration"
[ 7.344] (**) NVIDIA(0): Enabling 2D acceleration
[ 7.344] (II) Loading sub module "glxserver_nvidia"
[ 7.344] (II) LoadModule: "glxserver_nvidia"
[ 7.344] (II) Loading /usr/lib/nvidia/xorg/libglxserver_nvidia.so
[ 7.381] (II) Module glxserver_nvidia: vendor="NVIDIA Corporation"
[ 7.382] (II) NVIDIA GLX Module 460.32.03 Sun Dec 27 18:53:34 UTC 2020
[ 7.383] (II) NVIDIA: The X server supports PRIME Render Offload.
[ 8.473] (--) NVIDIA(0): Valid display device(s) on GPU-0 at PCI:43:0:0
[ 8.474] (--) NVIDIA(0): DFP-4.8
[ 8.474] (--) NVIDIA(0): DFP-4.1
[ 8.474] (--) NVIDIA(0): DFP-0
[ 8.474] (--) NVIDIA(0): DFP-1
[ 8.474] (--) NVIDIA(0): DFP-2
[ 8.474] (--) NVIDIA(0): DFP-3
[ 8.474] (--) NVIDIA(0): DFP-4
[ 8.474] (--) NVIDIA(0): DFP-5
[ 8.474] (--) NVIDIA(0): DFP-6 (boot)
[ 8.474] (--) NVIDIA(0): DFP-7
[ 8.476] (II) NVIDIA(0): NVIDIA GPU GeForce GTX 1060 6GB (GP106-A) at PCI:43:0:0
[ 8.476] (II) NVIDIA(0): (GPU-0)
[ 8.476] (--) NVIDIA(0): Memory: 6291456 kBytes
[ 8.476] (--) NVIDIA(0): VideoBIOS: 86.06.0e.00.6d
[ 8.476] (II) NVIDIA(0): Detected PCI Express Link width: 16X
[ 8.477] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): connected
[ 8.477] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): Internal DisplayPort
[ 8.477] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): GUID: 10DE9070-0000-0000-0067-F35400000070
[ 8.477] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): 1440.0 MHz maximum pixel clock
[ 8.477] (--) NVIDIA(GPU-0):
[ 8.481] (--) NVIDIA(GPU-0): DELL U2414H (DFP-4.1): connected
[ 8.481] (--) NVIDIA(GPU-0): DELL U2414H (DFP-4.1): Internal DisplayPort
[ 8.481] (--) NVIDIA(GPU-0): DELL U2414H (DFP-4.1): 1440.0 MHz maximum pixel clock
[ 8.481] (--) NVIDIA(GPU-0):
[ 8.482] (--) NVIDIA(GPU-0): DFP-0: disconnected
[ 8.482] (--) NVIDIA(GPU-0): DFP-0: Internal TMDS
[ 8.482] (--) NVIDIA(GPU-0): DFP-0: 330.0 MHz maximum pixel clock
[ 8.482] (--) NVIDIA(GPU-0):
[ 8.482] (--) NVIDIA(GPU-0): DFP-1: disconnected
[ 8.482] (--) NVIDIA(GPU-0): DFP-1: Internal TMDS
[ 8.482] (--) NVIDIA(GPU-0): DFP-1: 165.0 MHz maximum pixel clock
[ 8.482] (--) NVIDIA(GPU-0):
[ 8.482] (--) NVIDIA(GPU-0): DFP-2: disconnected
[ 8.482] (--) NVIDIA(GPU-0): DFP-2: Internal DisplayPort
[ 8.482] (--) NVIDIA(GPU-0): DFP-2: 1440.0 MHz maximum pixel clock
[ 8.482] (--) NVIDIA(GPU-0):
[ 8.482] (--) NVIDIA(GPU-0): DFP-3: disconnected
[ 8.482] (--) NVIDIA(GPU-0): DFP-3: Internal TMDS
[ 8.482] (--) NVIDIA(GPU-0): DFP-3: 165.0 MHz maximum pixel clock
[ 8.482] (--) NVIDIA(GPU-0):
[ 8.482] (--) NVIDIA(GPU-0): DFP-4: disconnected
[ 8.482] (--) NVIDIA(GPU-0): DFP-4: Internal DisplayPort
[ 8.482] (--) NVIDIA(GPU-0): DFP-4: 1440.0 MHz maximum pixel clock
[ 8.482] (--) NVIDIA(GPU-0):
[ 8.484] (--) NVIDIA(GPU-0): DFP-5: disconnected
[ 8.484] (--) NVIDIA(GPU-0): DFP-5: Internal TMDS
[ 8.484] (--) NVIDIA(GPU-0): DFP-5: 165.0 MHz maximum pixel clock
[ 8.484] (--) NVIDIA(GPU-0):
[ 8.485] (--) NVIDIA(GPU-0): DELL U2515H (DFP-6): connected
[ 8.485] (--) NVIDIA(GPU-0): DELL U2515H (DFP-6): Internal DisplayPort
[ 8.485] (--) NVIDIA(GPU-0): DELL U2515H (DFP-6): 1440.0 MHz maximum pixel clock
[ 8.485] (--) NVIDIA(GPU-0):
[ 8.487] (--) NVIDIA(GPU-0): DFP-7: disconnected
[ 8.487] (--) NVIDIA(GPU-0): DFP-7: Internal TMDS
[ 8.487] (--) NVIDIA(GPU-0): DFP-7: 165.0 MHz maximum pixel clock
[ 8.487] (--) NVIDIA(GPU-0):
[ 8.573] (==) NVIDIA(0):
[ 8.573] (==) NVIDIA(0): No modes were requested; the default mode "nvidia-auto-select"
[ 8.573] (==) NVIDIA(0): will be used as the requested mode.
[ 8.573] (==) NVIDIA(0):
[ 8.573] (II) NVIDIA(0): Validated MetaModes:
[ 8.573] (II) NVIDIA(0):
[ 8.573] (II) NVIDIA(0): "DFP-6:nvidia-auto-select,DFP-4.1:nvidia-auto-select,DFP-4.8:nvidia-auto-select"
[ 8.573] (II) NVIDIA(0): Virtual screen size determined to be 7040 x 1440
[ 8.581] (--) NVIDIA(0): DPI set to (118, 117); computed from "UseEdidDpi" X config
[ 8.581] (--) NVIDIA(0): option
[ 8.582] (II) NVIDIA: Using 24576.00 MB of virtual memory for indirect memory
[ 8.582] (II) NVIDIA: access.
[ 8.584] (II) NVIDIA(0): ACPI: failed to connect to the ACPI event daemon; the daemon
[ 8.584] (II) NVIDIA(0): may not be running or the "AcpidSocketPath" X
[ 8.584] (II) NVIDIA(0): configuration option may not be set correctly. When the
[ 8.584] (II) NVIDIA(0): ACPI event daemon is available, the NVIDIA X driver will
[ 8.584] (II) NVIDIA(0): try to use it to receive ACPI event notifications. For
[ 8.584] (II) NVIDIA(0): details, please see the "ConnectToAcpid" and
[ 8.584] (II) NVIDIA(0): "AcpidSocketPath" X configuration options in Appendix B: X
[ 8.584] (II) NVIDIA(0): Config Options in the README.
[ 8.607] (II) NVIDIA(0): Setting mode "DFP-6:nvidia-auto-select,DFP-4.1:nvidia-auto-select,DFP-4.8:nvidia-auto-select"
[ 9.100] (==) NVIDIA(0): Disabling shared memory pixmaps
[ 9.100] (==) NVIDIA(0): Backing store enabled
[ 9.100] (==) NVIDIA(0): Silken mouse disabled
[ 9.101] (==) NVIDIA(0): DPMS enabled
[ 9.102] (II) NVIDIA(0): [DRI2] Setup complete
[ 9.102] (II) NVIDIA(0): [DRI2] VDPAU driver: nvidia
[ 9.107] (II) Initializing extension XVideo
[ 9.107] (II) Initializing extension XVideo-MotionCompensation
[ 9.472] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=3 (/dev/input/event3)
[ 9.472] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=7 (/dev/input/event4)
[ 9.472] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=8 (/dev/input/event5)
[ 9.473] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=9 (/dev/input/event6)
[ 9.473] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=10 (/dev/input/event7)
[ 9.473] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=11 (/dev/input/event8)
[ 9.474] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=12 (/dev/input/event9)
[ 9.746] (--) NVIDIA(GPU-0): DELL U2515H (DFP-6): connected
[ 9.746] (--) NVIDIA(GPU-0): DELL U2515H (DFP-6): Internal DisplayPort
[ 9.746] (--) NVIDIA(GPU-0): DELL U2515H (DFP-6): 1440.0 MHz maximum pixel clock
[ 9.746] (--) NVIDIA(GPU-0):
[ 9.747] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): connected
[ 9.747] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): Internal DisplayPort
[ 9.747] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): GUID: 10DE9070-0000-0000-0067-F35400000070
[ 9.747] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): 1440.0 MHz maximum pixel clock
[ 9.747] (--) NVIDIA(GPU-0):
[ 9.747] (--) NVIDIA(GPU-0): DELL U2414H (DFP-4.1): connected
[ 9.747] (--) NVIDIA(GPU-0): DELL U2414H (DFP-4.1): Internal DisplayPort
[ 9.747] (--) NVIDIA(GPU-0): DELL U2414H (DFP-4.1): 1440.0 MHz maximum pixel clock
[ 9.747] (--) NVIDIA(GPU-0):
[ 22.820] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): connected
[ 22.820] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): Internal DisplayPort
[ 22.821] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): GUID: 10DE9070-0000-0000-0067-F35400000070
[ 22.821] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): 1440.0 MHz maximum pixel clock
[ 22.821] (--) NVIDIA(GPU-0):
[ 22.821] (--) NVIDIA(GPU-0): DELL U2414H (DFP-4.1): connected
[ 22.821] (--) NVIDIA(GPU-0): DELL U2414H (DFP-4.1): Internal DisplayPort
[ 22.821] (--) NVIDIA(GPU-0): DELL U2414H (DFP-4.1): 1440.0 MHz maximum pixel clock
[ 22.821] (--) NVIDIA(GPU-0):
[ 22.821] (--) NVIDIA(GPU-0): DFP-0: disconnected
[ 22.821] (--) NVIDIA(GPU-0): DFP-0: Internal TMDS
[ 22.821] (--) NVIDIA(GPU-0): DFP-0: 330.0 MHz maximum pixel clock
[ 22.821] (--) NVIDIA(GPU-0):
[ 22.821] (--) NVIDIA(GPU-0): DFP-1: disconnected
[ 22.821] (--) NVIDIA(GPU-0): DFP-1: Internal TMDS
[ 22.821] (--) NVIDIA(GPU-0): DFP-1: 165.0 MHz maximum pixel clock
[ 22.821] (--) NVIDIA(GPU-0):
[ 22.821] (--) NVIDIA(GPU-0): DFP-2: disconnected
[ 22.821] (--) NVIDIA(GPU-0): DFP-2: Internal DisplayPort
[ 22.821] (--) NVIDIA(GPU-0): DFP-2: 1440.0 MHz maximum pixel clock
[ 22.821] (--) NVIDIA(GPU-0):
[ 22.821] (--) NVIDIA(GPU-0): DFP-3: disconnected
[ 22.821] (--) NVIDIA(GPU-0): DFP-3: Internal TMDS
[ 22.821] (--) NVIDIA(GPU-0): DFP-3: 165.0 MHz maximum pixel clock
[ 22.821] (--) NVIDIA(GPU-0):
[ 22.821] (--) NVIDIA(GPU-0): DFP-4: disconnected
[ 22.821] (--) NVIDIA(GPU-0): DFP-4: Internal DisplayPort
[ 22.821] (--) NVIDIA(GPU-0): DFP-4: 1440.0 MHz maximum pixel clock
[ 22.821] (--) NVIDIA(GPU-0):
[ 22.823] (--) NVIDIA(GPU-0): DFP-5: disconnected
[ 22.823] (--) NVIDIA(GPU-0): DFP-5: Internal TMDS
[ 22.823] (--) NVIDIA(GPU-0): DFP-5: 165.0 MHz maximum pixel clock
[ 22.823] (--) NVIDIA(GPU-0):
[ 22.824] (--) NVIDIA(GPU-0): DELL U2515H (DFP-6): connected
[ 22.824] (--) NVIDIA(GPU-0): DELL U2515H (DFP-6): Internal DisplayPort
[ 22.824] (--) NVIDIA(GPU-0): DELL U2515H (DFP-6): 1440.0 MHz maximum pixel clock
[ 22.824] (--) NVIDIA(GPU-0):
[ 22.826] (--) NVIDIA(GPU-0): DFP-7: disconnected
[ 22.826] (--) NVIDIA(GPU-0): DFP-7: Internal TMDS
[ 22.826] (--) NVIDIA(GPU-0): DFP-7: 165.0 MHz maximum pixel clock
[ 22.826] (--) NVIDIA(GPU-0):
[ 25.103] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): connected
[ 25.104] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): Internal DisplayPort
[ 25.104] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): GUID: 10DE9070-0000-0000-0067-F35400000070
[ 25.104] (--) NVIDIA(GPU-0): DELL U2715H (DFP-4.8): 1440.0 MHz maximum pixel clock
[ 25.104] (--) NVIDIA(GPU-0):
[ 25.104] (--) NVIDIA(GPU-0): DELL U2414H (DFP-4.1): connected
[ 25.104] (--) NVIDIA(GPU-0): DELL U2414H (DFP-4.1): Internal DisplayPort
[ 25.104] (--) NVIDIA(GPU-0): DELL U2414H (DFP-4.1): 1440.0 MHz maximum pixel clock
[ 25.104] (--) NVIDIA(GPU-0):
[ 25.104] (--) NVIDIA(GPU-0): DFP-0: disconnected
[ 25.104] (--) NVIDIA(GPU-0): DFP-0: Internal TMDS
[ 25.104] (--) NVIDIA(GPU-0): DFP-0: 330.0 MHz maximum pixel clock
[ 25.104] (--) NVIDIA(GPU-0):
[ 25.104] (--) NVIDIA(GPU-0): DFP-1: disconnected
[ 25.104] (--) NVIDIA(GPU-0): DFP-1: Internal TMDS
[ 25.104] (--) NVIDIA(GPU-0): DFP-1: 165.0 MHz maximum pixel clock
[ 25.104] (--) NVIDIA(GPU-0):
File not found: /var/log/messages
File not found: /var/log/kern.log
File not found: /var/log/daemon.log
File not found: /var/log/syslog
Log Summary
Log Checked Found
=== ======= =====
dmesg true true
journalctl true false
/var/log/daemon.log true false
/var/log/kern.log true false
/var/log/messages true false
/var/log/syslog true false
/var/log/Xorg.0.log true true
Probing connected monitors using libdrm...
Checking Nvidia options to see if experimental kernel modesetting enabled:
Executing command: modprobe -c | grep "^options nvidia"
Checking libdrm version using pkg-config...
2.4.104
Has a DRM kernel driver been loaded? (drmAvailable()): true
Probing device /dev/dri/card0...
Open succeeded for device: /dev/dri/card0
DRM driver version information:
Version: 0.0.0
Driver: nvidia-drm
Date: 20160202
Description: NVIDIA DRM driver
DRM library version: 1.3.0.
DRM Busid:
Device information:
bustype: 0 - pci
domain:bus:device.func: 0000:2b:00.0
vendor vid:pid: 0x10de:0x1c03
subvendor vid:pid: 0x1458:0x3716
revision id: 0x00a1
Is a modesetting capable driver attached to bus id: pci:0000:2b:00.0?
(calling drmCheckModesettingAvailable())
Modesetting not supported (-ENOSYS)
Retrieving DRM resources...
Failure retrieving DRM resources, errno=EOPNOTSUPP(95): Operation not supported
Examining /sys/class/drm...
Query file system for i2c nodes under /sys/class/drm/card*...
ls: cannot access '/sys/class/drm/card*/card*/i2c*': No such file or directory
Device Identifier Cross Reference Report
/dev/i2c busno: 8
EDID: ...20200103 Mfg: DEL Model: DELL U2715H SN: H7YCC4BS0BRL
Product number: 53349, binary SN: 809652812
XrandR output: DP-2.8
DRM connector: (null)
UDEV name: NVIDIA i2c adapter 8 at 2b:00.0
UDEV syspath: /devices/pci0000:00/0000:00:03.1/0000:2b:00.0/i2c-8/i2c-dev/i2c-8
UDEV busno: 8
sysfs drm path: (null)
sysfs drm I2C: (null)
sysfs drm busno: Unknown
ambiguous EDID: false
/dev/i2c busno: 9
EDID: ...2020017D Mfg: DEL Model: DELL U2515H SN: FJYC769I0BBL
Product number: 53359, binary SN: 809648716
XrandR output: DP-4
DRM connector: (null)
UDEV name: NVIDIA i2c adapter 9 at 2b:00.0
UDEV syspath: /devices/pci0000:00/0000:00:03.1/0000:2b:00.0/i2c-9/i2c-dev/i2c-9
UDEV busno: 9
sysfs drm path: (null)
sysfs drm I2C: (null)
sysfs drm busno: Unknown
ambiguous EDID: false
Video related contents of /etc/modprobe.d
grep: /etc/modprobe.d/*conf: No such file or directory
Env_Accumulator:
architecture: x86_64
distributor_id
Drivers detected: nvidia
/dev/i2c device numbers: 0 1 2 3 4 5 6 7 8 9
sysfs_i2c_devices_exist: true
/sys/bus/i2c device numbers: 0 1 2 3 4 5 6 7 8 9
dev_i2c_devices_required: true
module_i2c_dev_needed: true
module_i2c_dev_builtin: false
loadable_i2c_dev_exists: true
i2c_dev_loaded_or_builtin: true
group_i2c_checked: true
group_i2c_exists: false
dev_i2c_common_group_name: root
all_dev_i2c_has_group_i2c: false
any_dev_i2c_has_group_i2c: false
all_dev_i2c_is_group_rw: true
any_dev_i2c_is_group_rw: false
cur_uname: root
cur_uid: 0
cur_user_in_group_i2c: false
cur_user_any_devi2c_rw: true
cur_user_all_devi2c_rw: true
Configuration suggestions:
Current user has RW access to all /dev/i2c-N devices.
Skipping further group and permission checks.