[Bug 94985] [HSW] Severe screen flickering on external monitor after i915.enable_psr=1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94985

--- Comment #3 from dnord <pinguin255 at gmail.com> ---
Also "fifo_underrun" error messages are appearing each time during external
monitor connection, which are obviously directly related to this bug, as they
are appearing only when settings leading to this bug are set and not otherwise.
[  559.660256] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR*
uncleared fifo underrun on pipe B
[  559.660274] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[  559.660297] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR*
uncleared pch fifo underrun on pch transcoder A
[  559.660309] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH
transcoder A FIFO underrun

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