[Bug 105601] New: drm_wait_vblank log spam with reverse PRIME (intel+nouveau)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=105601

            Bug ID: 105601
           Summary: drm_wait_vblank log spam with reverse PRIME
                    (intel+nouveau)
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.2.2
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: mschiffer+misc at universe-factory.net
        Regression: No

Setup: I use reverse PRIME with a primary intel and a secondary nouveau card. I
have enabled one output on each of the cards. The reverse PRIME (nouveau)
output is set as primary output via xrandr.

Whenever there's a DRI user on the reverse PRIME screen, the following message
gets written to my kernel log once for each buffer swap:

[drm:drm_wait_vblank [drm]] *ERROR* Unsupported type value 0x7d, supported mask
0x7400003f

Both DRI2 and DRI3 cause this behaviour.

Depending on the exact setup (DRI2/DRI3, different DRI users), I also get
slightly different messages:

[drm:drm_wait_vblank [drm]] *ERROR* Unsupported type value 0x15d, supported
mask 0x7400003f
[drm:drm_wait_vblank [drm]] *ERROR* Unsupported type value 0x400015d, supported
mask 0x7400003f


Hardware:

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: NVIDIA Corporation GF119M [Quadro NVS 4200M]
(rev a1)

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