<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - 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#c34">Comment # 34</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - 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:grahamnorthup@yahoo.com" title="Graham Northup <grahamnorthup@yahoo.com>"> Graham Northup</a> <pre>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.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>