Hello,
I lose HDMI output with NVIDIA 555, with NVIDIA 550 it works ok.
My laptop is an i7+rtx 3070 mobile connected to an external LG G-SYNC monitor.
It detects the external monitor but no image whatsoever, just a black screen and a laggy KDE. When the HDMI cable is unplugged it works normally.
NVIDIA 555.52.04 - Blank HDMI out
System:
Host: CachyOS Kernel: 6.9.3-3-cachyos arch: x86_64 bits: 64 compiler: gcc
v: 14.1.1 clocksource: tsc
Desktop: KDE Plasma v: 6.0.5 tk: Qt v: N/A wm: kwin_x11 vt: 2 dm: SDDM
Distro: CachyOS base: Arch Linux
Machine:
Type: Desktop System: GIGABYTE product: AERO 15 XD v: N/A
Mobo: N/A model: AERO 15 XD serial: <superuser required> part-nu: P75XD
uuid: <superuser required> UEFI: American Megatrends LLC. v: FB03
date: 04/27/2021
CPU:
Info: 8-core model: 11th Gen Intel Core i7-11800H bits: 64 type: MT MCP
smt: enabled arch: Tiger Lake rev: 1 cache: L1: 640 KiB L2: 10 MiB L3: 24 MiB
Speed (MHz): avg: 920 high: 1383 min/max: 800/4600 cores: 1: 800 2: 1114
3: 800 4: 800 5: 800 6: 1383 7: 800 8: 800 9: 800 10: 1306 11: 800 12: 800
13: 800 14: 800 15: 1320 16: 800 bogomips: 73728
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: Intel TigerLake-H GT1 [UHD Graphics] vendor: Gigabyte driver: i915
v: kernel arch: Gen-12.1 ports: active: eDP-1 empty: DP-1, DP-2, DP-3, DP-4,
DP-5, HDMI-A-1 bus-ID: 00:02.0 chip-ID: 8086:9a60 class-ID: 0300
Device-2: NVIDIA GA104M [GeForce RTX 3070 Mobile / Max-Q] vendor: Gigabyte
driver: nvidia v: 555.52.04 arch: Ampere pcie: speed: 2.5 GT/s lanes: 16
ports: active: none off: HDMI-A-2 empty: DP-6,DP-7 bus-ID: 01:00.0
chip-ID: 10de:249d class-ID: 0300
Device-3: IMC Networks USB2.0 HD UVC WebCam driver: uvcvideo type: USB
rev: 2.0 speed: 480 Mb/s lanes: 1 bus-ID: 3-9:4 chip-ID: 13d3:56a2
class-ID: 0e02 serial: 0x0001
Display: x11 server: X.org v: 1.21.1.13 with: Xwayland v: 24.1.0
compositor: kwin_x11 driver: X: loaded: modesetting,nvidia unloaded: fbdev
alternate: intel,nouveau,nv,vesa dri: iris gpu: i915,nvidia,nvidia-nvswitch
display-ID: :0 screens: 1
Screen-1: 0 s-res: 5120x1440 s-size: <missing: xdpyinfo>
Monitor-1: HDMI-A-2 mapped: HDMI-1-0 note: disabled pos: right
model: LG (GoldStar) ULTRAGEAR serial: 109NTPCBS728 res: 2560x1440 hz: 100
dpi: 109 size: 597x336mm (23.5x13.23") diag: 685mm (27") modes:
max: 2560x1440 min: 640x480
Monitor-2: eDP-1 pos: primary,left model: Samsung 0x4143 res: 2560x1440
hz: 60 dpi: 189 size: 344x194mm (13.54x7.64") diag: 395mm (15.5")
modes: 3840x2160
API: OpenGL Message: Unable to show GL data. glxinfo is missing.
NVIDIA 550.78 - Working HDMI out
System:
Host: nvidia Kernel: 6.9.2-1-MANJARO arch: x86_64 bits: 64 compiler: gcc
v: 14.1.1 clocksource: tsc
Desktop: KDE Plasma v: 6.0.5 tk: Qt v: N/A wm: kwin_x11 vt: 2 dm: SDDM
Distro: Manjaro base: Arch Linux
Machine:
Type: Desktop System: GIGABYTE product: AERO 15 XD v: N/A
serial: <superuser required>
Mobo: N/A model: AERO 15 XD serial: <superuser required> part-nu: P75XD
uuid: <superuser required> UEFI: American Megatrends LLC. v: FB03
date: 04/27/2021
CPU:
Info: 8-core model: 11th Gen Intel Core i7-11800H bits: 64 type: MT MCP
smt: enabled arch: Tiger Lake rev: 1 cache: L1: 640 KiB L2: 10 MiB L3: 24 MiB
Speed (MHz): avg: 906 high: 1321 min/max: 800/4600 cores: 1: 1025 2: 800
3: 800 4: 1321 5: 1029 6: 800 7: 800 8: 1136 9: 800 10: 1199 11: 800 12: 800
13: 800 14: 800 15: 800 16: 800 bogomips: 73744
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: Intel TigerLake-H GT1 [UHD Graphics] vendor: Gigabyte driver: i915
v: kernel arch: Gen-12.1 ports: active: eDP-1 empty: DP-1, DP-2, DP-3, DP-4,
DP-5, HDMI-A-1 bus-ID: 00:02.0 chip-ID: 8086:9a60 class-ID: 0300
Device-2: NVIDIA GA104M [GeForce RTX 3070 Mobile / Max-Q] vendor: Gigabyte
driver: nvidia v: 550.78 arch: Ampere pcie: speed: 2.5 GT/s lanes: 16
bus-ID: 01:00.0 chip-ID: 10de:249d class-ID: 0300
Device-3: IMC Networks USB2.0 HD UVC WebCam driver: uvcvideo type: USB
rev: 2.0 speed: 480 Mb/s lanes: 1 bus-ID: 3-9:4 chip-ID: 13d3:56a2
class-ID: 0e02 serial: 0x0001
Display: x11 server: X.Org v: 21.1.13 with: Xwayland v: 24.1.0
compositor: kwin_x11 driver: X: loaded: modesetting,nvidia
alternate: fbdev,nouveau,nv,vesa dri: iris gpu: i915 display-ID: :0
screens: 1
Screen-1: 0 s-res: 2560x2880 s-dpi: 96 s-size: 676x761mm (26.61x29.96")
s-diag: 1018mm (40.07")
Monitor-1: HDMI-1-0 pos: top res: 2560x1440 hz: 100 dpi: 109
size: 597x336mm (23.5x13.23") diag: 685mm (26.97") modes: N/A
Monitor-2: eDP-1 pos: primary,bottom res: 2560x1440 hz: 60 dpi: 189
size: 344x194mm (13.54x7.64") diag: 395mm (15.55") modes: N/A
API: EGL v: 1.5 hw: drv: intel iris drv: nvidia platforms: device: 0
drv: nvidia device: 1 drv: iris device: 3 drv: swrast gbm: drv: kms_swrast
surfaceless: drv: nvidia x11: drv: iris inactive: wayland,device-2
API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: intel mesa v: 24.0.8-manjaro1.1
glx-v: 1.4 direct-render: yes renderer: Mesa Intel UHD Graphics (TGL GT1)
device-ID: 8086:9a60
API: Vulkan v: 1.3.279 layers: 1 surfaces: xcb,xlib device: 0
type: discrete-gpu driver: nvidia device-ID: 10de:249d
Memory: total: 48 GiB note: est. available: 46.79 GiB used: 2.06 GiB (4.4%)
Processes: 323 Power: uptime: 1m states: freeze,mem,disk suspend: deep
wakeups: 0 hibernate: platform Init: systemd v: 255 default: graphical
Packages: pm: pacman pkgs: 1296 Compilers: gcc: 14.1.1 alt: 13 Shell: Zsh
v: 5.9 default: Bash v: 5.2.26 running-in: konsole inxi: 3.3.34