NVIDIA fixes on Debian

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

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

gogromat/nvidia_debian_hacks.md