[Bug 108520] New: MST DisplayPort HiDPI screen flicker - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 108520] New: MST DisplayPort HiDPI screen flicker
Date: Mon, 22 Oct 2018 23:19:03 +0000	[thread overview]
Message-ID: <bug-108520-8800@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=108520

            Bug ID: 108520
           Summary: MST DisplayPort HiDPI screen flicker
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: jhnmlkvch9-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

HiDPI MST monitor connected via DisplayPort has bad screen flicker (one to
three high speed flickers every 20 seconds or so).

Version of X: 1.20
Nouveau: 1.0.15-3
Kernel: 4.18.16-arch1-1-ARCH

Curiously, the flicker only happens on my Optimus laptop with Hybrid Graphics
disabled (Intel off, Nouveau on). The flicker disappears if Hybrid Graphics is
enabled (Both Intel and Nouveau cards on).

Can't find anything relevant in dmesg, journal etc., but let me know which logs
will be useful and I can upload them.

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