Bug 93167

Summary: radeon/drm fails to restore graphics mode after s2disk
Product: DRI Reporter: Elmar Stellnberger <estellnb>
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED INVALID QA Contact:
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
Xorg.0.log captured directly after resume
none
Xorg.0.log.old captured directly after resume
none
journal/messages of a few boots with s2disk (and pretty nothing else) none

Description Elmar Stellnberger 2015-11-29 20:06:22 UTC 
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).
Comment 1 Elmar Stellnberger 2015-11-29 20:07:18 UTC 
Created attachment 120196 [details]
Xorg.0.log captured directly after resume
Comment 2 Elmar Stellnberger 2015-11-29 20:07:53 UTC 
Created attachment 120197 [details]
Xorg.0.log.old captured directly after resume
Comment 3 Elmar Stellnberger 2015-11-29 20:08:51 UTC 
Created attachment 120198 [details]
journal/messages of a few boots with s2disk (and pretty nothing else)
Comment 4 Michel Dänzer 2015-11-30 03:41:28 UTC 
Looks like acceleration fails to initialize during resume:

[drm:r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x850C)=0xCAFEDEAD)
[drm:si_resume [radeon]] *ERROR* si startup failed on resume

Everything else is likely cascaded failure caused by this.
Comment 5 Elmar Stellnberger 2015-12-02 15:21:22 UTC 
Michel, is there anything we can do about it?
Comment 6 Elmar Stellnberger 2016-08-30 19:06:58 UTC 
likely an issue of the mainboard manufacturer as this works with the same card and another motherboard; closing.

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