<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL] [regression] Flickering artefact window at top left of screens in kernel 4.8-rc5" href="https://bugs.freedesktop.org/show_bug.cgi?id=97596#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL] [regression] Flickering artefact window at top left of screens in kernel 4.8-rc5" href="https://bugs.freedesktop.org/show_bug.cgi?id=97596">bug 97596</a> from <a class="email" href="mailto:rockorequin@hotmail.com" title="rockorequin@hotmail.com">rockorequin@hotmail.com</a> <pre>I'm adding this comment only because when I submitted <a href="show_bug.cgi?id=97596#c2">comment #2</a> just now, the server reported a sendmail error due to running out of memory, and hopefully it will work this time...</pre> </div> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL] [regression] Flickering artefact window at top left of screens in kernel 4.8-rc5" href="https://bugs.freedesktop.org/show_bug.cgi?id=97596#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL] [regression] Flickering artefact window at top left of screens in kernel 4.8-rc5" href="https://bugs.freedesktop.org/show_bug.cgi?id=97596">bug 97596</a> from <a class="email" href="mailto:rockorequin@hotmail.com" title="rockorequin@hotmail.com">rockorequin@hotmail.com</a> <pre>Created <a href="attachment.cgi?id=126473" name="attach_126473" title="dmesg with drm.debug=0xe">attachment 126473</a> <a href="attachment.cgi?id=126473&action=edit" title="dmesg with drm.debug=0xe">[details]</a> dmesg with drm.debug=0xe > So, there is chance that it is dup of <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL] [regression] Random display flickering on Kernel 4.8 with dual-screen" href="show_bug.cgi?id=97450">bug 97450</a>, There's always a chance it has the same underlying cause. But that bug has completely different symptoms. That bug refers to the whole screen flickering, whereas in this bug there is only a small window flickering at the top left of the screens; that bug is not related to cursor movement, whereas in this bug it is triggered by moving the mouse between screens; and in that bug it only occurs on the external monitor, whereas in this bug it occurs on both monitors. > and therefore can you confirm if, without any external display connected, it is occurring on your laptop display? It does not occur with no external display connected. I didn't really expect it to, since it's kind of hard to move the mouse between the displays with no external display connected :) To add to the original report description, I believe now that occurs every time the mouse moves between the displays, and additionally it occurs on the first keypress in the gnome terminal immediately after the mouse is moved into the the display and gnome-terminal selected. So moving the mouse between displays is the trigger. > Moreover, add drm.debug=0xe on the boot command line and then attached new kernel log See attached dmesg. I also have a full syslog if you need. It's still an issue in 4.8-rc6. Also, I saw these while installing 4.8-rc6, in case they are relevant, although I don't think they are for skylake: W: Possible missing firmware /lib/firmware/i915/kbl_guc_ver9_14.bin for module i915 W: Possible missing firmware /lib/firmware/i915/bxt_guc_ver8_7.bin for module i915</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> <li>You are the assignee for the bug.</li> </ul> </body> </html>