[Bug 107465] Weird resolution

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107465

            Bug ID: 107465
           Summary: Weird resolution
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: germano.massullo at gmail.com

Videocard: RX480
OS: Fedora 28 KDE
Kernel 4.17.9-200.fc28.x86_64

Sometimes when I poweroff the screen, then after some time I turn on it again,
the system cannot recognize native screen resolution, and sets it to a weird
one. In Plasma system settings, the monitor name is unknown and the native
resolution is missing (1600x1050), other resolutions are available instead..
After playing with some resolutions, suddendly the screen name (ViewSonic etc.)
returns back.

MrCooper user in #radeon Freenode chat, suggested me to start the system with
amdgpu.dc=0 flag. 24 hours of testing seems to confirm that such flag fixes the
problem.

I attach dmesg and xorg.0.log of system experiencing the problem

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20180803/02b5c277/attachment.html>