<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - SKL screen flicker and dmesg [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun" href="https://bugs.freedesktop.org/show_bug.cgi?id=103229#c36">Comment # 36</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - SKL screen flicker and dmesg [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun" href="https://bugs.freedesktop.org/show_bug.cgi?id=103229">bug 103229</a> from <a class="email" href="mailto:lakshminarayana.vudum@intel.com" title="Lakshmi <lakshminarayana.vudum@intel.com>"> Lakshmi</a> <pre>(In reply to Lakshmi from <a href="show_bug.cgi?id=103229#c35">comment #35</a>) > (In reply to Graham Northup from <a href="show_bug.cgi?id=103229#c34">comment #34</a>) > > 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 <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - two external screens permanently go blank on HP EliteBook Folio G1" href="show_bug.cgi?id=108462#c18">https://bugs.freedesktop.org/show_bug.cgi?id=108462#c18</a>, 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 (<a href="https://cgit.freedesktop.org/drm-tip">https://cgit.freedesktop.org/drm-tip</a>).</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>