[drm:drm_wait_vblank [drm]] *ERROR* Unsupported type value 0xA, supported mask 0xB

mlukaszek · 05-18-2016, 11:47 AM

Hi,

Some of you are experiencing these appearing in kernel logs a lot, probably drastically reducing the overall performance.

Unfortunately, this looks like nothing specific to DisplayLink, but something that needs to be fixed in upstream as it's affecting general dual GPU setup:

See for example:
https://bugs.freedesktop.org/show_bug.cgi?id=92327
https://bugzilla.redhat.com/show_bug.cgi?id=1243432

If you experience this too, subscribe this thread.
If you have a workaround, please share it with others.

Thanks,
Michal

05-18-2016, 11:47 AM	#1
mlukaszek Senior Member Join Date: Feb 2010 Posts: 386	*[drm:drm_wait_vblank [drm]] ERROR* Unsupported type value 0xA, supported mask 0xB** Hi, Some of you are experiencing these appearing in kernel logs a lot, probably drastically reducing the overall performance. Unfortunately, this looks like nothing specific to DisplayLink, but something that needs to be fixed in upstream as it's affecting general dual GPU setup: See for example: https://bugs.freedesktop.org/show_bug.cgi?id=92327 https://bugzilla.redhat.com/show_bug.cgi?id=1243432 If you experience this too, subscribe this thread. If you have a workaround, please share it with others. Thanks, Michal