Tested with linux-3.19.0.75-generic, there are lots of warnings in the dmesg when connecting a external monitor (same as the ones in the bug description), but can't see any "screen blanks".
Tested with linux-3. 19.0.75- generic, there are lots of warnings in the dmesg when connecting a external monitor (same as the ones in the bug description), but can't see any "screen blanks".