[Bug 95521] DP unplug and undocking ThinkPad produces dmesg errors

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95521

--- Comment #12 from Martin Jørgensen <mkj at gotu.dk> ---
... and right now it happened again. Image was turning on and off on monitor,
and after I xrandr --output DP2-2 --off the machine froze for a few seconds and
I got this in the dmesg:


[21714.659267] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR*
uncleared fifo underrun on pipe B
[21714.659281] [drm:ironlake_irq_handler [i915]] *ERROR* CPU pipe B FIFO
underrun
[21715.477955] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too
many voltage retries, give up
[21716.181167] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too
many voltage retries, give up
[21716.882401] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too
many voltage retries, give up
[21717.581145] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too
many voltage retries, give up
[21718.279735] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too
many voltage retries, give up
[21718.978615] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too
many voltage retries, give up
[21718.979114] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to train
DP, aborting
[21718.989251] [drm:intel_dp_start_link_train [i915]] *ERROR* Timed out waiting
for DP idle patterns

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