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nixos/nvidia: fix /dev/nvidia* devices minors

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We can't assume that DRI card minor is the same as NVidia GPU device minor,
because some DRI minors could be taken by GPUs of other vendors.

Fixes #87788, #98942.
This commit is contained in:
Artem Leshchev 2022-04-28 01:04:33 +03:00
parent 5f8cb21011
commit b01be47c87
1 changed files with 2 additions and 1 deletions
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3
nixos/modules/hardware/video/nvidia.nix
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@ -363,7 +363,8 @@ in
# Create /dev/nvidia-uvm when the nvidia-uvm module is loaded.
KERNEL=="nvidia", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidiactl c $$(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 255'"
KERNEL=="nvidia_modeset", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia-modeset c $$(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 254'"
KERNEL=="card*", SUBSYSTEM=="drm", DRIVERS=="nvidia", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia%n c $$(grep nvidia-frontend /proc/devices | cut -d \ -f 1) %n'"
KERNEL=="card*", SUBSYSTEM=="drm", DRIVERS=="nvidia", PROGRAM="${pkgs.gnugrep}/bin/grep 'Device Minor:' /proc/driver/nvidia/gpus/%b/information", \
RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia%c{3} c $$(grep nvidia-frontend /proc/devices | cut -d \ -f 1) %c{3}"
KERNEL=="nvidia_uvm", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia-uvm c $$(grep nvidia-uvm /proc/devices | cut -d \ -f 1) 0'"
KERNEL=="nvidia_uvm", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia-uvm-tools c $$(grep nvidia-uvm /proc/devices | cut -d \ -f 1) 0'"
'' + optionalString cfg.powerManagement.finegrained ''