When the two screens have been switched off by power management, only the primary screen is woken up again. A quick switch to a different tty screen (ctrl+alt+F2) and back fixes the problem. Possibly related: Plugging in an external screen freezes the primary one, again switching tty and back fixes the issue. Finally: Unplugging the external screen during operations seems to lead to problems with the graphics driver: the display will occasionally get distorted with white flashes on parts of screen (as if quickly switched off and on or so) and only a reboot fixes this. I'm on latest Tumbleweed packages, MacBook Pro 11,2 with Intel Iris Pro 5200 Graphics.
Hi Christian, thanks for the bug report! Is that the modesetting or the native intel driver? When did this problem start occurring? This sounds really like a graphics driver problem, judging by the symptoms. So let's look into that, first.
Thanks for your reply. My Xorg.0.log contains the following line: [ 10.354] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20160711 I'm on kernel 4.8.11-1-default. Please let me know if there's anything else you'd like to know.
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!