[Bug 111608] [CI][RESUME] igt at kms_frontbuffer_tracking@*psr* - fail - Failed assertion: psr_wait_entry(drm.debugfs, PSR_MODE_1), PSR still disabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111608

--- Comment #8 from Jose Roberto de Souza <jose.souza at intel.com> ---
In the last runs it ran a bunch of tests fine but at some point it gets a:
<3>[  391.548022] [drm:intel_psr_short_pulse [i915]] *ERROR* PSR Link CRC
error, disabling PSR
This happens when the CRC sent by source do not match with the calculated by
sink, so it could be a problem in the cable, source or sink.

We could probably recover from this error by exiting PSR and then enabling PSR
again after a few idle frames but for now after any PSR error reported by sink
we keep it disabled, that is how we managed to have PSR enabled by default
after several failed attempts.

We merged a patch this week making this "PSR Link CRC error" a debug message
like the other errors on intel_psr_short_pulse() and other patch skipping PSR
tests when we got one of this sink errors.
So when error like this one happen it will cause all other tests to run fine
and PSR tests will be skipped.

drm/i915: Making loglevel of PSR2/SU logs same.
drm/i915/display/psr: Print in debugfs if PSR is not enabled because of sink

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