[Wayland-bugs] [Bug 100707] Document udev property "WL_OUTPUT"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100707

--- Comment #6 from Pekka Paalanen <ppaalanen at gmail.com> ---
Hi Peter,

the patch is fine by me, it tells us where we stand and I can work with that.
:-)
Reviewed-by: Pekka Paalanen <pekka.paalanen at collabora.co.uk>

I'm not sure udev is the only place where would want to configure the
association. It works fine in my use case, where we have labelled connectors
and one has to plug the right thing to the right connector, or it doesn't work
at all.

But I can also envision a different use case, where you would associate a
monitor and a touch device in the compositor's (or system's if such existed)
configuration based on their inherent properties like serial numbers. Then the
user could plug the monitor to any display connector and the touch device to
any USB port, and have them automatically associated.

Or would that too be good with udev rules, maybe tagging the input device with
a monitor serial number, or something? Unfortunately I don't think udev can do
anything with monitors, so the monitor matching must always be done in the
compositor.

Yeah, the udev property in the doc seems good. I just wonder how one would make
a desktop GUI to configure them, but that's another matter.

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