[Bug 29787] random XRandR failures (i2c related?)

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Nov 19 07:30:53 PST 2010


--- Comment #13 from Alex Deucher <agd5f at yahoo.com> 2010-11-19 07:30:51 PST ---
(In reply to comment #12)
> It seems that both the EDID errors and the XRandR failures do not occur when I
> disable preemption (that, and I'm running 37-rc2 now). I'm currently rebuilding
> -rc2 with forced preemption again, will alternate between those kernels for the
> next few days to see what happens.

Getting the EDID is a timing sensitive bit banging operation, it the driver
gets preempted in the middle of an EDID fetch the fetch may fail or get
incomplete data.

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