[Bug 110862] Dual-monitors invalid state after turning on

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110862

            Bug ID: 110862
           Summary: Dual-monitors invalid state after turning on
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: denisgolovan at yandex.ru

Hi

I experience annoying bug when I turn on my dual-monitor PC after some time is
turned off state.
Basically it results in following:

+-----------+
|   OK      |
|           |
+-----------+------------------+
|           |                  |
|           |                  |
| GARBAGE   |  GARBAGE         |
|           |                  |
|           +------------------+
|           |
|           |
+-----------+

X Windows render a small part of screen ("OK" area), everything else is
garbage, quite often flicking. Changing VT does not help.

Tested under Linux x64 5.1.6 + xorg-server-1.20.5 + amdgpu driver from git.
Hardware: XFX RX580 8GB

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