I'm not sure, but sometimes you can cheat with your system. Example:
1.) working with your dual monitor 2.) lock your desktop (windows key and l for example) 3.) you see both external monitors locked 4.) wait sometime and they go to power safe mode 5.) coming back, press a key and see that only one monitor is available...the other one is still in power safe mode 6.) press STRG+ALT and 2 (or 3 or any other number with a terminal assigned) 7.) see a lot of drm:gen8_irq_handler error messages 8.) wait a moment and the other monitor which was/is in power safe mode will power up and showing up the same errors 9.) now yo back to your graphical UI (most of times STRG+ALT + 7) 10.) you might see that both screens are working again in dual mode... I did this now for a lot of times (because setting the display settings up again sucks) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1488719 Title: dmesg shows "[drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!" To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1488719/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
