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@kernel-bugs.osdl.org Reporter: mschiffer+misc@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)