NVIDIA fixes on Debian

nvidia_debian_hacks.md

Vulkan select NVIDIA GPU ICS loader on Linux

• @see https://askubuntu.com/questions/1344694/vulkan-tries-to-use-intel-gpu-by-default
• addion OP to Steam game results in Vulkan shaders being processed on NVIDIA GPU

Check if session is Wayland or X11

> echo $XDG_SESSION_TYPE
wayland
> ...
x11

Steam not using Nvidia GPU

xhost +local:

xhost 1

• run ps a |grep X
• outputs ex. /run/user/1000/gdm/Xauthority
• DISPLAY=:0|1 XAUTHORITY=/run/user/1000/gdm/Xauthority nvidia-settings

2

Root missing $DISPLAY hacks

> (user) echo $DISPLAY
:1
> (user) echo $XAUTHORITY
/run/user/1000/gdm/Xauthority
> su
> echo $DISPLAY
:1
> echo $XAUTHORITY
/run/user/1000/gdm/Xauthority
> su -
> echo $DISPLAY

> echo $XAUTHORITY

>

I have display :1, yours may vary.

When (user) or su are requesting $DISPLAY and it is set but when not inheriting from (user) $DISPLAY:

• something happened to /root/.Xauthority?
  • (ex. ls -la /root/.Xauthority shows d-rw... and looking inside it has .Xauthority.)
    • Request new
    • xhost +local:$DISPLAY - in system default terminal (not tmux, etc.)
  • su -
  • ln -s /home/(user)/.Xauthority /root/.Xauthority
    • delete it
  • su -
  • add to /root/.profile:
    • export DISPLAY=:1; on a new line

Can be easier to see autocomplete of $DISPLAY/etc. by using fish instead of sh/bash

• run as root nvidia-settings (should not see Invalid MIT-MAGIC-COOKIE-1 key)

Make Steam games work

(Overwatch/Apex/etc)

• Steam -> Compatibility -> Enable Proton Edge/Experimental (top) / Hotfix (bottom)

• If game doesn't load (but you have launched it at least once) or if you cannot Alt+Tab

  • https://www.youtube.com/watch?v=Q_xMmWt6sEY&t=2m50s
    • each game on Steam has appId which you can see on a website
  • Install protontricks
    • launch it via GUI: protontricks --gui
      • as a user, not as su because steam is installed for a user
      • select GameName - appId of a game you want to change
        • for a game to appear on this list you have to launch your game at least once via Steam -> right click game -> settings -> Compatibility -> [+] -> Proton
      • choose top launch Select the default wineprefix -> Run winecfg -> Compatibility -> set Resolution to your monitor
        • next time game launches it would go through this wincfg

Tearing in browser (FF)

@see https://www.reddit.com/r/linux_gaming/comments/1dj4z9u/is_there_something_wrong_with_my_gpu/

• about:config -> layers.acceleration.force-enabled -> true

Deadlock - virtual memory/etc.: -> Steam Thread <-

Nvidia Section

1.Game not launching on a NVIDIA GPU? try
`PROTON_HIDE_NVIDIA_GPU=1 %command%`
in the launch options
2.Advanced, experimental launch options:
`gamemoderun %command% -high -nojoy +engine_low_latency_sleep_after_client_tick true +mat_queue_mode 2 +cl_forcepreload 1`

• edit as su (nano /etc/sysctl.conf) and add a line at the bottom of a file vm.max_map_count=1048576
  • ~8GB of virtual memory - default on newer OSes
  • alt as sudo sysctl -w vm.max_map_count=1048576