[Bug 81911] Kernel 3.16 WARNING: CPU drivers/gpu/drm/i915/intel_display.c (slowpath)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=81911

--- Comment #1 from rocko <rockorequin at hotmail.com> ---
The PC froze for some seconds today and this was reported in the log. Might it
be related?

Aug 20 13:36:21 trusty-btrfs kernel: [226268.489553]
[drm:ilk_display_irq_handler] *ERROR* Pipe B FIFO underrun
Aug 20 13:36:21 trusty-btrfs kernel: [226268.490001]
[drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on
pch transcoder B
Aug 20 13:36:21 trusty-btrfs kernel: [226268.490002] [drm:cpt_serr_int_handler]
*ERROR* PCH transcoder B FIFO underrun

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