[Bug 95125] [BAT SNB] kms_pipe_crc_basic/hang-read-crc-pipe-? vblank wait timed out

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95125

--- Comment #3 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
These vblank wait timeouts seems to plague the dell xps machine.

Could be related to
commit 8a292d016d1c ("drm/i915: Make RPS EI/thresholds multiple of 25 on
SNB-BDW")

since the symptoms I was fixing there seemed to indicate scheduling/timer
interrupts getting lost. Perhaps we're still losing vblank interrupts, but to a
lesser degree? Playing around with the RPS EI/threshold values a bit more might
be warranted.

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