No HDMI from laptop rtx 2060/ uhd 630

deco33000 · July 2, 2022, 2:29pm

[Debian stable - driver 470]

Hi,
The last bit I need to solve is the absence of HDMI from my laptop.
On Windows, it works. Not on Linux: it wakes up but goes black right after, with a “No signal” message.
Even tried screen sharing solution, nope.

I need that functionality to make my presentations on a bigger screen.

I don’t have xorg conf. Please find attached the bug report I just created.

Thanks,

nvidia-bug-report.tar.gz (230.6 KB)

generix · July 2, 2022, 5:00pm

Please set kernel parameter
nvidia-drm.modeset=1
After reboot and login, you might have to run
xrandr --setprovideroutputsource NVIDIA-G0 modesetting && xrandr --auto
to enable the external monitor.

deco33000 · July 2, 2022, 5:45pm

Thank you so much generix, you saved my investment twice today.

I added your command in my bashrc and now it’s there forever.

Great to have someone like you on this forum :)

Again, thanks

nrdxp · July 3, 2022, 12:27am

Didn’t want to start a new topic just yet, but I am also having the same problem, however I already have modeset enabled. Posted some initial findings on my OS issue board here:

github.com/NixOS/nixpkgs

nvidia udev process fails

opened 01:24AM - 25 Mar 22 UTC

closed 04:00PM - 21 Jul 22 UTC

colemickens

0.kind: bug 6.topic: hardware

``` Mar 24 18:20:17 porty systemd-udevd[90508]: card0: Process '/nix/store/dndi…916j6yxzfzzj2sma2llhrlwahq06-bash-5.1-p16/bin/bash -c 'mknod -m 666 /dev/nvidia0 c $(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 0'' failed with exit code 1. Mar 24 18:20:17 porty systemd-udevd[90533]: card0-DP-3: Process '/nix/store/dndi916j6yxzfzzj2sma2llhrlwahq06-bash-5.1-p16/bin/bash -c 'mknod -m 666 /dev/nvidia3 c $(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 3'' failed with exit code 1. Mar 24 18:20:17 porty systemd-udevd[90584]: card0-DP-2: Process '/nix/store/dndi916j6yxzfzzj2sma2llhrlwahq06-bash-5.1-p16/bin/bash -c 'mknod -m 666 /dev/nvidia2 c $(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 2'' failed with exit code 1. Mar 24 18:20:17 porty systemd-udevd[90508]: card0-DP-1: Process '/nix/store/dndi916j6yxzfzzj2sma2llhrlwahq06-bash-5.1-p16/bin/bash -c 'mknod -m 666 /dev/nvidia1 c $(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 1'' failed with exit code 1. Mar 24 18:20:17 porty systemd-udevd[90574]: card0-HDMI-A-1: Process '/nix/store/dndi916j6yxzfzzj2sma2llhrlwahq06-bash-5.1-p16/bin/bash -c 'mknod -m 666 /dev/nvidia1 c $(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 1'' failed with exit code 1. ``` This is on latest nixos unstable `commit 1ec61dd4167f04be8d05c45780818826132eea0d (nixos/nixos-unstable)`

generix · July 3, 2022, 1:14am

Nixos is special, please open a new thread.
Please run nvidia-bug-report.sh as root and attach the resulting nvidia-bug-report.log.gz file to your post.

nrdxp · July 5, 2022, 8:18pm

sorry where can I get this script from?

edit
nevermind, I found a copy of it, looks like it’s not installed by default in NixOS. Do I need to run this in a special context, like while an HDMI device is connected to the port for example?

generix · July 6, 2022, 7:30am

Yes, connect the hdmi, then run the script with sudo on the desktop.

system · July 20, 2022, 7:30am

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