Displaylink: Difference between revisions
Hughobrien (talk | contribs) m fix link syntax |
Hughobrien (talk | contribs) remove note about pending pr that was merged https://github.com/NixOS/nixpkgs/pull/324121 |
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Since these drivers depend on binary unfree blobs, you will need to first add it to your Nix store. Go to https://www.displaylink.com/downloads/ubuntu to get the appropriate driver version and note the download URL you get after accepting the EULA. | Since these drivers depend on binary unfree blobs, you will need to first add it to your Nix store. Go to https://www.displaylink.com/downloads/ubuntu to get the appropriate driver version and note the download URL you get after accepting the EULA. | ||
As of 2024-05-01, the current latest version for the driver can be found at https://www.synaptics.com/products/displaylink-graphics/downloads/ubuntu-6.0?filetype=exe. | As of 2024-05-01, the current latest version for the driver can be found at https://www.synaptics.com/products/displaylink-graphics/downloads/ubuntu-6.0?filetype=exe. | ||
After you have downloaded the driver, run something like the following, adjusting the version number in <code>displaylink-600.zip</code> to match the version supported in NixOS at the moment:<syntaxhighlight lang="console"> | After you have downloaded the driver, run something like the following, adjusting the version number in <code>displaylink-600.zip</code> to match the version supported in NixOS at the moment:<syntaxhighlight lang="console"> | ||
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nixpkgs.overlays = [ | nixpkgs.overlays = [ | ||
(final: prev: { | (final: prev: { | ||
wlroots_0_17 = prev.wlroots_0_17.overrideAttrs (old: { | wlroots_0_17 = prev.wlroots_0_17.overrideAttrs (old: { # you may need to use 0_18 | ||
patches = (old.patches or [ ]) ++ [ | patches = (old.patches or [ ]) ++ [ | ||
(prev.fetchpatch { | (prev.fetchpatch { | ||
url = "https://gitlab.freedesktop.org/wlroots/wlroots/uploads/bd115aa120d20f2c99084951589abf9c/DisplayLink_v2.patch"; | url = "https://gitlab.freedesktop.org/wlroots/wlroots/uploads/bd115aa120d20f2c99084951589abf9c/DisplayLink_v2.patch"; | ||
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systemd.services.dlm.wantedBy = [ "multi-user.target" ]; | systemd.services.dlm.wantedBy = [ "multi-user.target" ]; | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Note as of [https://github.com/NixOS/nixpkgs/pull/351752 2014-10-30] nixos-unstable sway uses <code>wlroots_0_18</code>. The patch above applies correctly but you will need to invoke sway with the <code>--unsupported-gpu</code> flag. | |||
[https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/1823#note_2146862 Source] | [https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/1823#note_2146862 Source] | ||
[[Category:Video]] | [[Category:Video]] |
Latest revision as of 21:33, 9 November 2024
DisplayLink monitors
In order to use DisplayLink monitors over USB, such as the ASUS MB16AC, the DisplayLink driver needs to be installed:
services.xserver.videoDrivers = [ "displaylink" "modesetting" ];
The module nixos/modules/hardware/video/displaylink.nix
should also work for wlroots compositors.
Since these drivers depend on binary unfree blobs, you will need to first add it to your Nix store. Go to https://www.displaylink.com/downloads/ubuntu to get the appropriate driver version and note the download URL you get after accepting the EULA.
As of 2024-05-01, the current latest version for the driver can be found at https://www.synaptics.com/products/displaylink-graphics/downloads/ubuntu-6.0?filetype=exe.
After you have downloaded the driver, run something like the following, adjusting the version number in displaylink-600.zip
to match the version supported in NixOS at the moment:
$ nix-prefetch-url --name displaylink-600.zip https://www.synaptics.com/sites/default/files/exe_files/2024-05/DisplayLink%20USB%20Graphics%20Software%20for%20Ubuntu6.0-EXE.zip
Connecting a second external monitor
In order to add a second external monitor you can add the following to your configuration:
services.xserver.displayManager.sessionCommands = ''
${lib.getBin pkgs.xorg.xrandr}/bin/xrandr --setprovideroutputsource 2 0
'';
Sway
Identify which card has the render device, evdi
is the DisplayLink interface, so it's not card0
, but card1
.
$ ls -l /dev/dri/by-path
lrwxrwxrwx - root 2 Nov 13:38 pci-0000:00:02.0-card -> ../card1
lrwxrwxrwx - root 2 Nov 13:38 pci-0000:00:02.0-render -> ../renderD128
lrwxrwxrwx - root 2 Nov 13:38 platform-evdi.0-card -> ../card0
environment.variables = {
WLR_EVDI_RENDER_DEVICE = "/dev/dri/card1";
};
nixpkgs.overlays = [
(final: prev: {
wlroots_0_17 = prev.wlroots_0_17.overrideAttrs (old: { # you may need to use 0_18
patches = (old.patches or [ ]) ++ [
(prev.fetchpatch {
url = "https://gitlab.freedesktop.org/wlroots/wlroots/uploads/bd115aa120d20f2c99084951589abf9c/DisplayLink_v2.patch";
hash = "sha256-vWQc2e8a5/YZaaHe+BxfAR/Ni8HOs2sPJ8Nt9pfxqiE=";
})
];
});
})
];
services.xserver.videoDrivers = [ "displaylink" ];
systemd.services.dlm.wantedBy = [ "multi-user.target" ];
Note as of 2014-10-30 nixos-unstable sway uses wlroots_0_18
. The patch above applies correctly but you will need to invoke sway with the --unsupported-gpu
flag.