Description of problem: When I dock my already up and running laptop with the lid open to a docking station with two screens, the screens are not activated. All screens stay black, although I do see the mouse pointer (and can sometimes move it. See the attached log file: Around 10:18 the system was connected to the docking station I tried to open console with <CTRL><ALT><F?> I tried to restart the gnome session by pressing <Alt><F2>r (10:38?) Finally I forced a hard reboot by holding the power button for several seconds. After the reboot (laptop was still connected with open lid to the docking station with two additional screens), all screens (also the one on the laptop) came up correctly.
Created attachment 1080936 [details] Logging during the problem
See also: bug 1275770
There are some recent commits to fix screen blanking. It doesn't solve my issue, but I can post my source/x86_64 RPM and spec if it's helpful for testing.
Actually, I noticed that your issue is with nouveau and not i915, so it won't help, however, this commit might fix your issue: http://cgit.freedesktop.org/nouveau/xf86-video-nouveau/commit/?id=6e6d8ac1c7b4ee047a7b40b95dea1e65a7c3211a
Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.