[Bug 26733] New: Full-screen XV causes graphics lockup

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

http://bugs.freedesktop.org/show_bug.cgi?id=26733

           Summary: Full-screen XV causes graphics lockup
           Product: xorg
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: tavianator-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
         QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org


Since updating libdrm, xf86-video-nouveau, and the DRM module to the latest GIT
(as of today), any time I make a video full-screen in VLC (with XVideo output)
on my nv92, the screen freezes.  Through ssh I found this in dmesg at the time
of the crash, which I'm told is bad:

[drm] nouveau 0000:04:00.0: PFIFO_DMA_PUSHER - Ch 2
[drm] nouveau 0000:04:00.0: PGRAPH_ERROR - nSource: DATA_ERROR, nStatus:
[drm] nouveau 0000:04:00.0: PGRAPH_ERROR - Ch 2/2 Class 0x502d Mthd 0x0844 Data
0x00104218:0x00104218
[drm] nouveau 0000:04:00.0: PGRAPH_ERROR - nSource: DATA_ERROR, nStatus:
[drm] nouveau 0000:04:00.0: PGRAPH_ERROR - Ch 2/2 Class 0x502d Mthd 0x0854 Data
0x4d6a0000:0x4d6a0000
[drm] nouveau 0000:04:00.0: nouveau_channel_free: freeing fifo 2
[drm] nouveau 0000:04:00.0: Failed to idle channel 2.
[drm] nouveau 0000:04:00.0: PFIFO_DMA_PUSHER - Ch 127
[drm] nouveau 0000:04:00.0: Allocating FIFO number 2
[drm] nouveau 0000:04:00.0: nouveau_channel_alloc: initialised FIFO 2
[drm] nouveau 0000:04:00.0: nouveau_channel_free: freeing fifo 2
[drm] nouveau 0000:04:00.0: Failed to idle channel 2.
[drm] nouveau 0000:04:00.0: nouveau_channel_free: freeing fifo 1


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