[Bug 108604] New: seemingly random screen flicker with kernel 4.19

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108604

            Bug ID: 108604
           Summary: seemingly random screen flicker with kernel 4.19
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: bugzilla at colorremedies.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Summary: I'm seeing a very brief screen flicker, uncertain of the interval
(perhaps once per half hour), whether using built-in only display or external
(appears on both displays). This is a regression, it doesn't happen with
4.18.x.


model name      : Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz

00:02.0 VGA compatible controller: Intel Corporation Skylake GT2 [HD Graphics
520] (rev 07)

I've enabled drm.debug=0x1e but can only isolate to about 1 minute (I see the
flicker, look at the time, and then use journalctl --since= to capture from the
start of that minute.

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