[Nouveau] [Bug 94832] New: Reverse Prime corruption with nouveau using radeon outputs

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94832

            Bug ID: 94832
           Summary: Reverse Prime corruption with nouveau using radeon
                    outputs
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: haagch at frickel.club
        QA Contact: xorg-team at lists.x.org

Created attachment 122732
  --> https://bugs.freedesktop.org/attachment.cgi?id=122732&action=edit
photo with screen corruption

I have these two (old) GPUs:

00:0d.0 VGA compatible controller: NVIDIA Corporation C61 [GeForce 6150SE
nForce 430] (rev a2)
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV370
[Radeon X300]

After startup my desktop runs on the nvidia gpu.
I enable prime with these commands:

xrandr --setprovideroutputsource radeon nouveau
xrandr --output VGA-2 --auto  --output DVI-1-0 --right-of VGA-2 --mode
1280x1024

It seems to almost work, but the monitor connected to the radeon gpu is very
corrupted, see attached image.

Software:

linux 4.5
xf86-video-nouveau 1.0.12
xf86-video-ati 1:7.6.1
xorg-server 1.18.3
xfwm4 4.12.3 with compositor enabled

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