<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL] Flashing black screen ([drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun)" href="https://bugs.freedesktop.org/show_bug.cgi?id=94605#c56">Comment # 56</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL] Flashing black screen ([drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun)" href="https://bugs.freedesktop.org/show_bug.cgi?id=94605">bug 94605</a> from <a class="email" href="mailto:nissen@fastmail.se" title="Christer <nissen@fastmail.se>"> Christer</a> <pre> I have this problem as well on my Dell XPS 13 connected to an external 27" Eizo monitor using displayport. - Sample frequency: clicking the same link in google search results 20 times caused the signal loss on displayport 4 times as the page refreshed. The signal loss happens for about a second. - The bug doesnt seem to happen if I lower the resolution to from 2560x1440 to 1920x1200 which is interesting, and hopefully a clue to solving the issue... but of course I cant really use that resolution because text looks quite bad. - The bug also doesnt seem to happen on HDMI. I cant confirm this with the same external monitor since it only has displayport connection, but I have an ASUS 305 with similar chipset (also running Arch Linux) and I never get this bug on that machine when connected to an external monitor using HDMI. - Bug happens also on no user activity (no mouse or keyboard usage), but more frequently when doing something active, like browing the web and clicking links. - Latest 4.8 rc6 kernel and kernel option i915.enable_rc6=0 doesnt help. - Im using the latest drivers from intel: local/xf86-video-intel 1:2.99.917+703+g15c5ff1-1 (xorg-drivers xorg) X.org Intel i810/i830/i915/945G/G965+ video drivers</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>