How to get controllers working in steam?

[crestfalln]

How do you get controllers working with steam using ego? Steam doesn't detect the dualshock 4 I am using.

[intgr]

I will try some day and let you know. Feel free to ping me again if I forget to reply.

[crestfalln]

I was able to find a workaround for this. The problem exists with udev not adding the ego user to the device file acl. This may be caused by how the udev rules(the ones that came with the steam package on archlinux) handle pts sessions.
For the workaround I made a new group, added the ego user to it, and changed the udev rules to use this group for the device file.

[bjornfor]

Here's a NixOS config snippet (for the PS5 controller):

  # Allow 'ego' to acccess gamepads/controllers, ref.
  # https://github.com/intgr/ego/issues/82 ("How to get controllers working in steam?")
  # Rules based on "60-steam-input.rules", where MODE= and TAG+= were replaced
  # with RUN+=.
  services.udev.extraRules = ''
    # PS5 DualSense controller over USB hidraw
    KERNEL=="hidraw*", ATTRS{idVendor}=="054c", ATTRS{idProduct}=="0ce6", RUN+="${pkgs.acl}/bin/setfacl -m u:ego:rw /dev/$name"

    # PS5 DualSense controller over bluetooth hidraw
    KERNEL=="hidraw*", KERNELS=="*054C:0CE6*", RUN+="${pkgs.acl}/bin/setfacl -m u:ego:rw /dev/$name"
  '';

[ostoru]

I spend too much time trying to make sense of udev rules but they are too alien to me, basically i was trying a way to add only my controllers, in my case /dev/input/js1 and /dev/input/js2, but i gave up and gave the ego user blanket access to all input devices by adding it to the input group with sudo usermod -a -G input ego
is working now, but i seriously don't know how unsafe it might be.

[bjornfor]

@ostoru: If you want a "tighter" udev rule set you can find attributes(?) to put in your rules by running udevadm info -a /dev/input/js1.