[Bug 1498655] Re: Steam Controller support: need read-write access to Valve-owned input event device nodes.

[Martin Pitt]

Making *all* devices from these two vendors world-writable is too
dangerous, this can't go into a default distro rule. This needs to be
restricted to either particular product IDs/patterns, or better yet, to
particular device classes. What are these anyway, something like
joysticks or game controllers? Does input_id recognize them as anything
in particular, ideally ID_INPUT_JOYSTICK=1?

The comments should also explain more than just "USB devices"

Please do "udevadm info --export-db > /tmp/udev.txt" and attach the file
here; I'd like to see what we already know about these devices.

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https://bugs.launchpad.net/bugs/1498655

Title:
  Steam Controller support: need read-write access to Valve-owned input
  event device nodes.

Status in steam package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  Incomplete

Bug description:
  The Steam Controller is about to roll out; for the Steam Controller to
  be supported properly by the Steam Client, it needs to be able to read
  and write to HID device nodes that have the Valve USB vendor ID. In
  our own Steam package 'steam-launcher' [1], this is achieved by a udev
  rule [2] matching our vendor ID. There doesn't seem to be such a udev
  rule in the Ubuntu-provided package, meaning Ubuntu users will not be
  able to use the Steam Controller out of the box.

  [1] http://repo.steampowered.com/steam/pool/steam/s/steam/
  [2] ./lib/udev/rules.d/99-steam-controller-perms.rules

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