<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Video cutout on Kaby Lake U processors." href="https://bugs.freedesktop.org/show_bug.cgi?id=107543#c62">Comment # 62</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Video cutout on Kaby Lake U processors." href="https://bugs.freedesktop.org/show_bug.cgi?id=107543">bug 107543</a> from <a class="email" href="mailto:anshuman.gupta@intel.com" title="Anshuman Gupta <anshuman.gupta@intel.com>"> Anshuman Gupta</a> <pre>(In reply to Jan from <a href="show_bug.cgi?id=107543#c61">comment #61</a>) Hi Jan, Please find my inline response. > Last two days I performed various tests to get a better understanding of the > root-cause. First I kept the machine switched on a full night with the > settings i915.modeset=1, nouveau.modeset=0. Dmesg showed no failed hardware. > In the morning the machine had crashed, ssh-server down. I can't see any > errors in dmesg. This is strange, this particular bug is about Watermark configuration with 4k high-resolution display (we have a workaround patch also for that <a href="https://bugs.freedesktop.org/attachment.cgi?id=141958&action=edit">https://bugs.freedesktop.org/attachment.cgi?id=141958&action=edit</a> ). ssh server was working while this issue observed. Could you please get us the log, in order to check if it is a similar bug. > > I subsequently repeated with recovery mode. First booting until the login > screen: crashed. Then by booting to the recovery console: crash. > > After every test I reboot by pressing the power-key. The tests show that the > machine crashes within a few minutes when keeping the machine on for a long > time. > > I also tested by keeping the machine in the GRUB menu. The machine has not > crashed then. The machine also does nog crash by using Windows 10. Kept the > machine on for a full day. > > In my opinion the above rules out any hardware malfunction. The issue occurs > by loading the linux in the current configuration. Can you please test with the recently merged patch-series to drm-tip <a href="https://patchwork.freedesktop.org/series/51878/">https://patchwork.freedesktop.org/series/51878/</a> > > Since my machine also has a nvidia 940mx card on board, I am now planning to > install the nvidia driver from the nvidia site : > 'NVIDIA-Linux-x86_64-340.96.run'. Wonder what's gonna happen then. > > I am also planning to see if I can enhance debugging to see if I can get any > logging on the error. You enhance log message by below command, echo 0xe > /sys/module/drm/parameter/debug > > > ps: with all due respect, I am somewhat annoyed that there isn't any > response on my previous posts. Currently, I am typing in the void, while many > messages on this topic have been posted in this thread. At least replying > would be nice :-) Thanks, Anshuman Gupta.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>