Nvidia powermanagement not working on sway #383
Comments
|
Some extra hints for future self. To check if the GPU is currently suspended, check if this increments (not for all nvidia gpus, but certainly the one I have access to): $ while sleep 1; do cat /sys/bus/pci/devices/0000:01:00.0/power/runtime_suspended_time; doneTo enable powermanagement for the GPU (see also): # echo 'auto' > /sys/bus/pci/devices/0000:01:00.0/power/controlTo actually offload to the dGPU (even on wlroots), see the nvidia docs |
tlater-famedly
added a commit
that referenced
this issue
Jan 20, 2025
Turns out that:
- The usual env variables make everything use nvidia even if it
shouldn't (duh)
- To use a non-default GPU on wlroots, use `$WLR_DRM_DEVICES`
- On my current testbed the default GPU happens to be nvidia, see
sway docs on how to handle this elsewhere
- Using unstable nixpkgs in nixpkgs-wayland can cause issues with
drivers
Still need to confirm if the addition of `"amdgpu"` to the
`videoDrivers` list is actually necessary, and figure out how to
ensure that powermanagement is actually turned on, see #383.
*Then* set up a good offload script, also see #383 for hints.
tlater-famedly
added a commit
that referenced
this issue
Jan 22, 2025
Turns out that:
- The usual env variables make everything use nvidia even if it
shouldn't (duh)
- To use a non-default GPU on wlroots, use `$WLR_DRM_DEVICES`
- On my current testbed the default GPU happens to be nvidia, see
sway docs on how to handle this elsewhere
- Using unstable nixpkgs in nixpkgs-wayland can cause issues with
drivers
Still need to confirm if the addition of `"amdgpu"` to the
`videoDrivers` list is actually necessary, and figure out how to
ensure that powermanagement is actually turned on, see #383.
*Then* set up a good offload script, also see #383 for hints.
tlater-famedly
added a commit
that referenced
this issue
Jan 22, 2025
Turns out that:
- The usual env variables make everything use nvidia even if it
shouldn't (duh)
- To use a non-default GPU on wlroots, use `$WLR_DRM_DEVICES`
- On my current testbed the default GPU happens to be nvidia, see
sway docs on how to handle this elsewhere
- Using unstable nixpkgs in nixpkgs-wayland can cause issues with
drivers
Still need to confirm if the addition of `"amdgpu"` to the
`videoDrivers` list is actually necessary, and figure out how to
ensure that powermanagement is actually turned on, see #383.
*Then* set up a good offload script, also see #383 for hints.
tlater-famedly
added a commit
that referenced
this issue
Jan 22, 2025
Turns out that:
- The usual env variables make everything use nvidia even if it
shouldn't (duh)
- To use a non-default GPU on wlroots, use `$WLR_DRM_DEVICES`
- On my current testbed the default GPU happens to be nvidia, see
sway docs on how to handle this elsewhere
- Using unstable nixpkgs in nixpkgs-wayland can cause issues with
drivers
Still need to confirm if the addition of `"amdgpu"` to the
`videoDrivers` list is actually necessary, and figure out how to
ensure that powermanagement is actually turned on, see #383.
*Then* set up a good offload script, also see #383 for hints.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
The relevant power setting isn't set to
autoby the udev rules for some reason: https://github.com/NixOS/nixpkgs/blob/nixos-24.11/nixos/modules/hardware/video/nvidia.nix#L641I suspect this is because the driver isn't actually bound, since wlroots doesn't actually use the nvidia driver at all if started with the correct
WLR_DRM_DEVICESenv var. If so, this is a lil' silly, since that would mean with these rules the GPU draws power only if it isn't in use. Buuut I need to brush up on my udev knowledge before telling nvidia they're wrong.The text was updated successfully, but these errors were encountered: