[Bug 103229] SKL screen flicker and dmesg [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103229

--- Comment #36 from Lakshmi <lakshminarayana.vudum at intel.com> ---
(In reply to Lakshmi from comment #35)
> (In reply to Graham Northup from comment #34)
> > Hello from kernel 5.1.3! I have different hardware from this poster, but the
> > same symptoms--the noted line in dmesg, and screen flicker on the local
> > output. The device is a Surface Pro 1 (notoriously good Linux support, I
> > know); I have the output of lshw, lscpu, dmesg, my .config, etc. if anyone
> > wants them to be in this report.
> > 
> > This isn't a Fedora system, but I'm more than happy to let this be the test
> > monkey for any fixes.
> > 
> > So far, my workaround has been passing "nomodeset" and letting the kernel
> > hang onto the efifb. Of course, without DRM/KMS, most graphical environments
> > don't work.
> > 
> > I've also tried the other two workaround parameters (i915.enable_dc=0 as an
> > interpretation of one, and intel_idle.max_cstate=4 verbatim) to no avail.
> > I'd love to try https://bugs.freedesktop.org/show_bug.cgi?id=108462#c18, but
> > I'm not sure which kernel configs to twiddle to make that show up.
> 
> Can you please attach the dmesg from boot with drmtip?

Latest drmtip can be found here (https://cgit.freedesktop.org/drm-tip).

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