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author | Alyssa Ross <hi@alyssa.is> | 2022-05-31 09:59:33 +0000 |
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committer | Alyssa Ross <hi@alyssa.is> | 2022-05-31 09:59:57 +0000 |
commit | 9ff36293d1e428cd7bf03e8d4b03611b6d361c28 (patch) | |
tree | 1ab51a42b868c55b83f6ccdb80371b9888739dd9 /nixos/modules/hardware/video/displaylink.nix | |
parent | 1c4fcd0d4b0541e674ee56ace1053e23e562cc80 (diff) | |
parent | ddc3c396a51918043bb0faa6f676abd9562be62c (diff) | |
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Last good Nixpkgs for Weston+nouveau? archive
I came this commit hash to terwiz[m] on IRC, who is trying to figure out what the last version of Spectrum that worked on their NUC with Nvidia graphics is.
Diffstat (limited to 'nixos/modules/hardware/video/displaylink.nix')
-rw-r--r-- | nixos/modules/hardware/video/displaylink.nix | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/nixos/modules/hardware/video/displaylink.nix b/nixos/modules/hardware/video/displaylink.nix new file mode 100644 index 00000000000..912f53da836 --- /dev/null +++ b/nixos/modules/hardware/video/displaylink.nix @@ -0,0 +1,76 @@ +{ config, lib, pkgs, ... }: + +with lib; + +let + + enabled = elem "displaylink" config.services.xserver.videoDrivers; + + evdi = config.boot.kernelPackages.evdi; + + displaylink = pkgs.displaylink.override { + inherit evdi; + }; + +in + +{ + + config = mkIf enabled { + + boot.extraModulePackages = [ evdi ]; + boot.kernelModules = [ "evdi" ]; + + environment.etc."X11/xorg.conf.d/40-displaylink.conf".text = '' + Section "OutputClass" + Identifier "DisplayLink" + MatchDriver "evdi" + Driver "modesetting" + Option "AccelMethod" "none" + EndSection + ''; + + # make the device available + services.xserver.displayManager.sessionCommands = '' + ${lib.getBin pkgs.xorg.xrandr}/bin/xrandr --setprovideroutputsource 1 0 + ''; + + # Those are taken from displaylink-installer.sh and from Arch Linux AUR package. + + services.udev.packages = [ displaylink ]; + + powerManagement.powerDownCommands = '' + #flush any bytes in pipe + while read -n 1 -t 1 SUSPEND_RESULT < /tmp/PmMessagesPort_out; do : ; done; + + #suspend DisplayLinkManager + echo "S" > /tmp/PmMessagesPort_in + + #wait until suspend of DisplayLinkManager finish + if [ -f /tmp/PmMessagesPort_out ]; then + #wait until suspend of DisplayLinkManager finish + read -n 1 -t 10 SUSPEND_RESULT < /tmp/PmMessagesPort_out + fi + ''; + + powerManagement.resumeCommands = '' + #resume DisplayLinkManager + echo "R" > /tmp/PmMessagesPort_in + ''; + + systemd.services.dlm = { + description = "DisplayLink Manager Service"; + after = [ "display-manager.service" ]; + conflicts = [ "getty@tty7.service" ]; + + serviceConfig = { + ExecStart = "${displaylink}/bin/DisplayLinkManager"; + Restart = "always"; + RestartSec = 5; + LogsDirectory = "displaylink"; + }; + }; + + }; + +} |