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From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 199319] New: Flickering screen on AMDGPU and DC with Linux 4.16-2
Date: Sun, 08 Apr 2018 09:10:11 +0000	[thread overview]
Message-ID: <bug-199319-2300@https.bugzilla.kernel.org/> (raw)

https://bugzilla.kernel.org/show_bug.cgi?id=199319

            Bug ID: 199319
           Summary: Flickering screen on AMDGPU and DC with Linux 4.16-2
           Product: Drivers
           Version: 2.5
    Kernel Version: Linux 4.16
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: mail@rainer-finke.de
        Regression: No

Description: I upgraded to Linux 4.16-2 from the Arch Linux testing repository,
but since then the screen is flickering with my RX480 and AMDGPU.DC enabled.
The flickering is visible especially on Plasma-Wayland as soon as I move the
mouse, it is like a bright flickering, not like a graphical corruption. On SDDM
or Plasma X11 the flickering is much less frequent, but even there the screen
flickers from time to time. I use a 4K display connected via DisplayPort.
A downgrade to Linux 4.15 stable solved this even tough AMDGPU.DC is enabled as
well. 
I couldn't reproduce the same issue with my AMD Ryzen 5 2500U Vega APU
(1920x1080), so the issue might be related to the RX480 or 4K.


Additional info:
* Linux 4.16-2 from Arch Linux testing
* AMDGPU.DC=1 (kernel parameter)
* 4K display DisplayPort


Steps to reproduce:
1. Ugrade to Linux 4.16.2 with AMDGPU.DC enabled on a RX480
2. Screen is flickering when moving the mouse

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             reply	other threads:[~2018-04-08  9:10 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-08  9:10 bugzilla-daemon [this message]
2018-04-08  9:21 ` [Bug 199319] Flickering screen on AMDGPU and DC with Linux 4.16-2 bugzilla-daemon
2018-04-08 13:11 ` bugzilla-daemon
2018-04-08 17:01 ` bugzilla-daemon
2018-04-08 20:23 ` bugzilla-daemon
2018-04-08 20:32 ` bugzilla-daemon
2018-04-09  7:50 ` bugzilla-daemon
2018-04-09  8:02 ` bugzilla-daemon
2018-04-09  9:26 ` bugzilla-daemon
2018-04-09 11:21 ` bugzilla-daemon
2018-04-09 11:24 ` bugzilla-daemon
2018-04-09 15:59 ` bugzilla-daemon
2018-04-10 12:48 ` bugzilla-daemon
2018-04-10 13:00 ` bugzilla-daemon
2018-04-10 18:56 ` bugzilla-daemon
2018-04-14 14:18 ` bugzilla-daemon
2018-04-17 18:11 ` bugzilla-daemon
2018-04-18 11:51 ` bugzilla-daemon
2018-04-18 17:00 ` bugzilla-daemon
2018-04-18 18:14 ` bugzilla-daemon
2018-04-23 14:37 ` bugzilla-daemon
2018-12-12 16:46 ` bugzilla-daemon
2018-12-12 16:47 ` bugzilla-daemon

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