http://bugzilla.suse.com/show_bug.cgi?id=901887 --- Comment #1 from Lars Marowsky-Bree <lmb@suse.com> --- I had played with xrandr --off / --auto for a while for that output (turning the monitor's power on/off etc as well), and then eventually gave up and turned the display off. After ~2h hours, I decided to give it another try, turned on the monitor, and ran xrandr --output DP4 --auto again. (A sequence I had done multiple times before). Lo and behold, this time, the monitor came online fine and is now displaying. I don't know why, and I don't really trust the result ;-) It was also not reproducible, there's nothing new in the logs from either X or in dmesg. I can't tell what is different now. -- You are receiving this mail because: You are on the CC list for the bug.