[Bug 109376] FIFO underrun, visual glitches and instability with dual monitors

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109376

Hin-Tak Leung <htl10 at users.sourceforge.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #10 from Hin-Tak Leung <htl10 at users.sourceforge.net> ---
boot to 4.20.12 and the visual glitches happened once on unlock, and have a
FIFO underrun message also:

# uname -r
4.20.12-042012-generic

# grep FIFO kern.log
Mar  5 11:07:44 ... kernel: [ 2669.215740]
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO
underrun

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