I use Manjaro Deepin, after some recent updates (couple of months actually) i have a problem where max brightness value is very low (on each boot, and when you try to change it with buttons / through Deepin settings).
I think it’s most likely nvidia driver (current version is 430.26 and previous also affected was 418.24), but can’t be too sure…
Was trying to figure out and isolate issue on Manjaro forums, here’s what we found out so far:
- Did clean installation (manjaro-deepin-18.0.2-stable-x86_64.iso):
- At first i was on 4.19 LTS (which is default on this .iso and everything was fine)
- Then i’ve updated system to current state - issue become apparent.
- Then i’ve updated to 5.1.15-1 Kernel, which changed nothing in that sense
So i think that should mean it’s not Kernel itself.
- Found out that problem is here:
cat /sys/class/backlight/nvidia_0/max_brightnes
100
cat /sys/class/backlight/nvidia_0/brightnes
42
- If i manually change /sys/class/backlight/nvidia_0/brightnes value to 100 - it will work perfectly fine, like before update.
- Also when changing by buttons / Deepin settings - it works prfectly fine, system now think that 100 is max brightness value and acts this way.
- On next reboot cat /sys/class/backlight/nvidia_0/brightnes goes back to 42.
- We found probably related bug described in nouveau driver https://bugs.freedesktop.org/show_bug.cgi?id=110407
So…What could potentially reset /sys/class/backlight/nvidia_0/brightnes to 42 on every boot after some updates?
- Nvidia driver
- Kernel
- Deepin (which known to be supper buggy, but that looks like some system level stuff, not de…)
Please help to solve this.
Hopefully it can be fixed, and soon :)
inxi -Fxxz
System: Host: x133-pc Kernel: 5.1.15-1-MANJARO x86_64 bits: 64 compiler: gcc v: 9.1.0 Desktop: Deepin 15.10.1 tk: Qt 5.12.4
wm: DeepinWM dm: LightDM Distro: Manjaro Linux
Machine: Type: Laptop System: Dell product: Precision 7730 v: N/A serial: <filter> Chassis: type: 10 serial: <filter>
Mobo: Dell model: 0VC5H3 v: A00 serial: <filter> UEFI: Dell v: 1.6.0 date: 12/25/2018
Battery: ID-1: BAT0 charge: 93.5 Wh condition: 94.1/97.0 Wh (97%) volts: 12.0/11.4 model: BYD DELL GW0K986 serial: <filter>
status: Discharging
CPU: Topology: 6-Core model: Intel Core i9-8950HK bits: 64 type: MT MCP arch: Kaby Lake rev: A L2 cache: 12.0 MiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 69720
Speed: 800 MHz min/max: 800/4800 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 4: 800 5: 800 6: 800 7: 801 8: 801
9: 800 10: 800 11: 799 12: 800
Graphics: Device-1: NVIDIA GP104GLM [Quadro P5200 Mobile] vendor: Dell driver: nvidia v: 430.26 bus ID: 01:00.0
chip ID: 10de:1bb5
Display: x11 server: X.Org 1.20.5 driver: nvidia resolution: 3840x2160~60Hz
OpenGL: renderer: Quadro P5200/PCIe/SSE2 v: 4.6.0 NVIDIA 430.26 direct render: Yes
Audio: Device-1: Intel Cannon Lake PCH cAVS vendor: Dell driver: snd_hda_intel v: kernel bus ID: 00:1f.3
chip ID: 8086:a348
Device-2: NVIDIA GP104 High Definition Audio vendor: Dell driver: snd_hda_intel v: kernel bus ID: 01:00.1
chip ID: 10de:10f0
Sound Server: ALSA v: k5.1.15-1-MANJARO
Network: Device-1: Intel Ethernet I219-LM vendor: Dell driver: e1000e v: 3.2.6-k port: efa0 bus ID: 00:1f.6
chip ID: 8086:15bb
IF: eno1 state: down mac: <filter>
Device-2: Intel Wireless-AC 9260 driver: iwlwifi v: kernel port: 3000 bus ID: 6f:00.0 chip ID: 8086:2526
IF: wlp111s0 state: up mac: <filter>
Drives: Local Storage: total: 267.35 GiB used: 11.59 GiB (4.3%)
ID-1: /dev/nvme0n1 vendor: Samsung model: PM981 NVMe 256GB size: 238.47 GiB speed: 31.6 Gb/s lanes: 4
serial: <filter>
ID-2: /dev/sda type: USB vendor: Kingston model: DataTraveler 3.0 size: 28.88 GiB serial: <filter>
Partition: ID-1: / size: 109.49 GiB used: 11.48 GiB (10.5%) fs: ext4 dev: /dev/nvme0n1p2
Sensors: System Temperatures: cpu: 39.0 C mobo: N/A gpu: nvidia temp: 34 C
Fan Speeds (RPM): cpu: 0 fan-2: 0
Info: Processes: 265 Uptime: N/A Memory: 62.75 GiB used: 782.4 MiB (1.2%) Init: systemd v: 242 Compilers: gcc: 9.1.0
Shell: bash v: 5.0.7 running in: deepin-terminal inxi: 3.0.34