[Bug 93167] New: radeon/drm fails to restore graphics mode after s2disk

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93167

            Bug ID: 93167
           Summary: radeon/drm fails to restore graphics mode after s2disk
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: estellnb at elstel.org
        QA Contact: xorg-team at lists.x.org

The DRM module seems to have problems to restore the graphics mode for my XFX
Radeon R7 240 4K UHD graphics card after resume from s2disk. I just get pixel
soup the mouse pointer being a pixel square moving around. When I switch to
another vt-console I get a different pixel soup without mouse pointer. The same
pixel soup can be seen on the splash screen during preparations for s2disk. At
first radeon sets the graphics mode correctly on resume but when it comes to
restore the screen content then the pixel soup is going to come along. Consider
the logs for any further details (s2ram does not work either with this card
though there is a very different, likely an ACPI related issue:
https://bugzilla.kernel.org/show_bug.cgi?id=108541).

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