zuckerberg/nix-config
zuckerberg/nix-config
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Reverse PRIME Sync

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This commit is contained in:
googlebot 2022-02-09 16:46:38 -05:00
parent f16511fa0c
commit e5f21fc35e
2 changed files with 77 additions and 31 deletions
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11
machines/ray/configuration.nix
View File

@ -1,5 +1,14 @@
{ config, pkgs, fetchurl, lib, ... }: { config, pkgs, fetchurl, lib, ... }:
let
nvidia-offload = pkgs.writeShellScriptBin "nvidia-offload" ''
export __NV_PRIME_RENDER_OFFLOAD=1
export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
export __GLX_VENDOR_LIBRARY_NAME=nvidia
export __VK_LAYER_NV_optimus=NVIDIA_only
exec -a "$0" "$@"
'';
in
{ {
disabledModules = [ disabledModules = [
"hardware/video/nvidia.nix" "hardware/video/nvidia.nix"
@ -35,6 +44,8 @@
services.xserver.videoDrivers = [ "nvidia" ]; services.xserver.videoDrivers = [ "nvidia" ];
services.xserver.logFile = "/var/log/Xorg.0.log"; services.xserver.logFile = "/var/log/Xorg.0.log";
hardware.nvidia.prime = { hardware.nvidia.prime = {
# reverse_sync.enable = true;
# offload.enable = true;
sync.enable = true; sync.enable = true;
nvidiaBusId = "PCI:1:0:0"; nvidiaBusId = "PCI:1:0:0";
amdgpuBusId = "PCI:4:0:0"; amdgpuBusId = "PCI:4:0:0";

97
machines/ray/nvidia.nix
View File

@ -21,7 +21,8 @@ let
pCfg = cfg.prime; pCfg = cfg.prime;
syncCfg = pCfg.sync; syncCfg = pCfg.sync;
offloadCfg = pCfg.offload; offloadCfg = pCfg.offload;
primeEnabled = syncCfg.enable || offloadCfg.enable; reverseSyncCfg = pCfg.reverse_sync;
primeEnabled = syncCfg.enable || reverseSyncCfg.enable || offloadCfg.enable;
nvidiaPersistencedEnabled = cfg.nvidiaPersistenced; nvidiaPersistencedEnabled = cfg.nvidiaPersistenced;
nvidiaSettings = cfg.nvidiaSettings; nvidiaSettings = cfg.nvidiaSettings;
in in
@ -30,7 +31,8 @@ in
imports = imports =
[ [
(mkRenamedOptionModule [ "hardware" "nvidia" "optimus_prime" "enable" ] [ "hardware" "nvidia" "prime" "sync" "enable" ]) (mkRenamedOptionModule [ "hardware" "nvidia" "optimus_prime" "enable" ] [ "hardware" "nvidia" "prime" "sync" "enable" ])
(mkRenamedOptionModule [ "hardware" "nvidia" "optimus_prime" "allowExternalGpu" ] [ "hardware" "nvidia" "prime" "sync" "allowExternalGpu" ]) (mkRenamedOptionModule [ "hardware" "nvidia" "optimus_prime" "allowExternalGpu" ] [ "hardware" "nvidia" "prime" "allowExternalGpu" ])
(mkRenamedOptionModule [ "hardware" "nvidia" "prime" "sync" "allowExternalGpu" ] [ "hardware" "nvidia" "prime" "allowExternalGpu" ])
(mkRenamedOptionModule [ "hardware" "nvidia" "optimus_prime" "nvidiaBusId" ] [ "hardware" "nvidia" "prime" "nvidiaBusId" ]) (mkRenamedOptionModule [ "hardware" "nvidia" "optimus_prime" "nvidiaBusId" ] [ "hardware" "nvidia" "prime" "nvidiaBusId" ])
(mkRenamedOptionModule [ "hardware" "nvidia" "optimus_prime" "intelBusId" ] [ "hardware" "nvidia" "prime" "intelBusId" ]) (mkRenamedOptionModule [ "hardware" "nvidia" "optimus_prime" "intelBusId" ] [ "hardware" "nvidia" "prime" "intelBusId" ])
]; ];
@ -103,16 +105,17 @@ in
description = '' description = ''
Enable NVIDIA Optimus support using the NVIDIA proprietary driver via PRIME. Enable NVIDIA Optimus support using the NVIDIA proprietary driver via PRIME.
If enabled, the NVIDIA GPU will be always on and used for all rendering, If enabled, the NVIDIA GPU will be always on and used for all rendering,
while enabling output to displays attached only to the integrated Intel GPU while enabling output to displays attached only to the integrated Intel/AMD
without a multiplexer. GPU without a multiplexer.
Note that this option only has any effect if the "nvidia" driver is specified Note that this option only has any effect if the "nvidia" driver is specified
in <option>services.xserver.videoDrivers</option>, and it should preferably in <option>services.xserver.videoDrivers</option>, and it should preferably
be the only driver there. be the only driver there.
If this is enabled, then the bus IDs of the NVIDIA and Intel GPUs have to be If this is enabled, then the bus IDs of the NVIDIA and Intel/AMD GPUs have to
specified (<option>hardware.nvidia.prime.nvidiaBusId</option> and be specified (<option>hardware.nvidia.prime.nvidiaBusId</option> and
<option>hardware.nvidia.prime.intelBusId</option>). <option>hardware.nvidia.prime.intelBusId</option> or
<option>hardware.nvidia.prime.amdgpuBusId</option>).
If you enable this, you may want to also enable kernel modesetting for the If you enable this, you may want to also enable kernel modesetting for the
NVIDIA driver (<option>hardware.nvidia.modesetting.enable</option>) in order NVIDIA driver (<option>hardware.nvidia.modesetting.enable</option>) in order
@ -124,7 +127,7 @@ in
''; '';
}; };
hardware.nvidia.prime.sync.allowExternalGpu = mkOption { hardware.nvidia.prime.allowExternalGpu = mkOption {
type = types.bool; type = types.bool;
default = false; default = false;
description = '' description = ''
@ -138,9 +141,38 @@ in
description = '' description = ''
Enable render offload support using the NVIDIA proprietary driver via PRIME. Enable render offload support using the NVIDIA proprietary driver via PRIME.
If this is enabled, then the bus IDs of the NVIDIA and Intel GPUs have to be If this is enabled, then the bus IDs of the NVIDIA and Intel/AMD GPUs have to
specified (<option>hardware.nvidia.prime.nvidiaBusId</option> and be specified (<option>hardware.nvidia.prime.nvidiaBusId</option> and
<option>hardware.nvidia.prime.intelBusId</option>). <option>hardware.nvidia.prime.intelBusId</option> or
<option>hardware.nvidia.prime.amdgpuBusId</option>).
'';
};
hardware.nvidia.prime.reverse_sync.enable = mkOption {
type = types.bool;
default = false;
description = ''
Enable NVIDIA Optimus support using the NVIDIA proprietary driver via reverse
PRIME. If enabled, the Intel/AMD GPU will be used for all rendering, while
enabling output to displays attached only to the NVIDIA GPU without a
multiplexer.
Note that this option only has any effect if the "nvidia" driver is specified
in <option>services.xserver.videoDrivers</option>, and it should preferably
be the only driver there.
If this is enabled, then the bus IDs of the NVIDIA and Intel/AMD GPUs have to
be specified (<option>hardware.nvidia.prime.nvidiaBusId</option> and
<option>hardware.nvidia.prime.intelBusId</option> or
<option>hardware.nvidia.prime.amdgpuBusId</option>).
If you enable this, you may want to also enable kernel modesetting for the
NVIDIA driver (<option>hardware.nvidia.modesetting.enable</option>) in order
to prevent tearing.
Note that this configuration will only be successful when a display manager
for which the <option>services.xserver.displayManager.setupCommands</option>
option is supported is used.
''; '';
}; };
@ -204,7 +236,12 @@ in
{ {
assertion = !(syncCfg.enable && offloadCfg.enable); assertion = !(syncCfg.enable && offloadCfg.enable);
message = "Only one NVIDIA PRIME solution may be used at a time."; message = "PRIME Sync and Offload cannot be both enabled";
}
{
assertion = !(syncCfg.enable && reverseSyncCfg.enable);
message = "PRIME Sync and PRIME Reverse Sync cannot be both enabled";
} }
{ {
@ -242,10 +279,12 @@ in
services.xserver.useGlamor = mkDefault offloadCfg.enable; services.xserver.useGlamor = mkDefault offloadCfg.enable;
services.xserver.drivers = let # reverse sync implies offloading
in optional primeEnabled { hardware.nvidia.prime.offload.enable = mkDefault reverseSyncCfg.enable;
services.xserver.drivers = optional primeEnabled {
name = igpuDriver; name = igpuDriver;
display = offloadCfg.enable; display = !syncCfg.enable;
modules = optional (igpuDriver == "amdgpu") [ pkgs.xorg.xf86videoamdgpu ]; modules = optional (igpuDriver == "amdgpu") [ pkgs.xorg.xf86videoamdgpu ];
deviceSection = '' deviceSection = ''
BusID "${igpuBusId}" BusID "${igpuBusId}"
@ -254,35 +293,31 @@ in
} ++ singleton { } ++ singleton {
name = "nvidia"; name = "nvidia";
modules = [ nvidia_x11.bin ]; modules = [ nvidia_x11.bin ];
display = !offloadCfg.enable; display = syncCfg.enable;
deviceSection = optionalString primeEnabled deviceSection = optionalString primeEnabled ''
'' BusID "${pCfg.nvidiaBusId}"
BusID "${pCfg.nvidiaBusId}" ${optionalString pCfg.allowExternalGpu "Option \"AllowExternalGpus\""}
${optionalString syncCfg.allowExternalGpu "Option \"AllowExternalGpus\""} '';
${optionalString cfg.powerManagement.finegrained "Option \"NVreg_DynamicPowerManagement=0x02\""}
'';
screenSection =
''
Option "RandRRotation" "on"
${optionalString syncCfg.enable "Option \"AllowEmptyInitialConfiguration\""}
'';
}; };
services.xserver.serverLayoutSection = optionalString syncCfg.enable '' services.xserver.serverLayoutSection = optionalString syncCfg.enable ''
Inactive "Device-${igpuDriver}[0]" Inactive "Device-${igpuDriver}[0]"
'' + optionalString reverseSyncCfg.enable ''
Inactive "Device-nvidia[0]"
'' + optionalString offloadCfg.enable '' '' + optionalString offloadCfg.enable ''
Option "AllowNVIDIAGPUScreens" Option "AllowNVIDIAGPUScreens"
''; '';
services.xserver.displayManager.setupCommands = let services.xserver.displayManager.setupCommands = let
sinkGpuProviderName = if igpuDriver == "amdgpu" then gpuProviderName = if igpuDriver == "amdgpu" then
# find the name of the provider if amdgpu # find the name of the provider if amdgpu
"`${pkgs.xorg.xrandr}/bin/xrandr --listproviders | ${pkgs.gnugrep}/bin/grep -i AMD | ${pkgs.gnused}/bin/sed -n 's/^.*name://p'`" "`${pkgs.xorg.xrandr}/bin/xrandr --listproviders | ${pkgs.gnugrep}/bin/grep -i AMD | ${pkgs.gnused}/bin/sed -n 's/^.*name://p'`"
else else
igpuDriver; igpuDriver;
in optionalString syncCfg.enable '' providerCmdParams = if syncCfg.enable then "\"${gpuProviderName}\" NVIDIA-0" else "NVIDIA-G0 \"${gpuProviderName}\"";
in optionalString (syncCfg.enable || reverseSyncCfg.enable) ''
# Added by nvidia configuration module for Optimus/PRIME. # Added by nvidia configuration module for Optimus/PRIME.
${pkgs.xorg.xrandr}/bin/xrandr --setprovideroutputsource "${sinkGpuProviderName}" NVIDIA-0 ${pkgs.xorg.xrandr}/bin/xrandr --setprovideroutputsource ${providerCmdParams}
${pkgs.xorg.xrandr}/bin/xrandr --auto ${pkgs.xorg.xrandr}/bin/xrandr --auto
''; '';
@ -393,4 +428,4 @@ in
}; };
} }