Comment 124 for bug 1488719

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)