<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [bdw edp] Screen Flickering" href="https://bugs.freedesktop.org/show_bug.cgi?id=91393#c112">Comment # 112</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [bdw edp] Screen Flickering" href="https://bugs.freedesktop.org/show_bug.cgi?id=91393">bug 91393</a> from <a class="email" href="mailto:alex@alexforencich.com" title="alex@alexforencich.com">alex@alexforencich.com</a> <pre>(In reply to Mika Kahola from <a href="show_bug.cgi?id=91393#c110">comment #110</a>) > (In reply to alex from <a href="show_bug.cgi?id=91393#c109">comment #109</a>) > > Dammit. Now this regression has made it into the LTS kernel. Are you guys > > kidding me? Is it not possible for the changes that caused this > > exceptionally annoying regression (as in my computer is now almost entirely > > unusable) to be removed from the current production kernel, pending a proper > > fix????? > > My current understanding is that there are multiple causes for flickering. > Reverting this patch may solve an issue with one platform. Could you share > your dmesg log with drm.debug=0x1e for further analysis, please. Posted. I rebooted into the stock 4.5.1 kernel (direct from the Arch repository) with drm.debug=0x1e added to the kernel command line, logged in, suspended, resumed, and dumped the log with journalctl. I took a quick check through and didn't see any messages that indicated any sort of failure after the suspend operation. However there are a lot of messages in there, so I could have missed something. What I do know is that after the resume from suspend, I get something on the order of a 2 Hz flicker on the display that looks like the eDP link is flapping - i.e. there is tearing that affects the bottom portion of the display more than the top due to the link going down in the middle of a frame, portions of the display are briefly distorted or colored strangely, etc. None of this happens on 4.1.21, which is where I will stay until this gets a proper fix in the mainline.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>