[Nouveau] [Bug 107167] New: constantly firing events while screen attached to NVIDIA card is disabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107167

            Bug ID: 107167
           Summary: constantly firing events while screen attached to
                    NVIDIA card is disabled
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: sam at robots.org.uk
        QA Contact: xorg-team at lists.x.org

Created attachment 140522
  --> https://bugs.freedesktop.org/attachment.cgi?id=140522&action=edit
output of 'udevadm monitor -p | ts' while screen is locked

I've got a Lenovo P50 with hybrid graphics cards:

00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
01:00.0 VGA compatible controller: NVIDIA Corporation GM107GLM [Quadro M2000M]
(rev a2)

The internal display is connected to the Intel card. External display ports are
wired to the NVIDIA card. I'm using the autobind-GPUs Xorg patch so that I
don't have to run `xrandr --setprovideroutputsource` in order to make the
external ports usable.

While I'm away from the system, the monitor gets blanked. While it's in this
state, I see many change events from the NVIDIA device (udevadm monitor output
attached). This exacerbates a memory leak in gnome-desktop that causes clients
to consume several GiB of memory after I come back to the laptop, having left
it idle over the weekend.

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