[Bug 61678] New: SNA causes problems with DRI_PRIME

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=61678

          Priority: medium
            Bug ID: 61678
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: SNA causes problems with DRI_PRIME
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: mezin.alexander at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

When I run Xonotic on discrete gpu (DRI_PRIME=1), sometimes I see only black
screen, and dmesg is full of these messages:
[ 5172.729073] [drm:radeon_cs_parser_relocs] *ERROR* gem object lookup failed
0xa
[ 5172.729078] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation -2!

Radeon starts working again only after reboot.
This doesn't happen with UXA, so I think the problem is related to SNA.
Tested on versions 2.20.13 and 2.21.3 - no difference.

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