Suspicious strings from output of dmesg, possibly pointing to this problem:
... [ 13.904181] [drm] nouveau 0000:01:00.0: unplugged Embedded DisplayPort-1 [ 13.904944] [drm] nouveau 0000:01:00.0: plugged Embedded DisplayPort-1 [ 13.906631] [drm] nouveau 0000:01:00.0: unplugged Embedded DisplayPort-1 [ 13.907431] [drm] nouveau 0000:01:00.0: plugged Embedded DisplayPort-1 [ 14.018602] [drm] nouveau 0000:01:00.0: unplugged Embedded DisplayPort-1 [ 14.019357] [drm] nouveau 0000:01:00.0: plugged Embedded DisplayPort-1 [ 14.019367] [drm] nouveau 0000:01:00.0: plugged Embedded DisplayPort-1 [ 14.021106] [drm] nouveau 0000:01:00.0: unplugged Embedded DisplayPort-1 [ 14.021904] [drm] nouveau 0000:01:00.0: plugged Embedded DisplayPort-1 [ 14.133016] [drm] nouveau 0000:01:00.0: unplugged Embedded DisplayPort-1 [ 14.133032] [drm] nouveau 0000:01:00.0: unplugged Embedded DisplayPort-1 [ 14.133799] [drm] nouveau 0000:01:00.0: plugged Embedded DisplayPort-1 [ 14.135469] [drm] nouveau 0000:01:00.0: unplugged Embedded DisplayPort-1 [ 14.135478] [drm] nouveau 0000:01:00.0: unplugged Embedded DisplayPort-1 [ 14.136267] [drm] nouveau 0000:01:00.0: plugged Embedded DisplayPort-1 ... -- Corrupted image (running stripes) on Quadro NVS 3100M with embedded DisplayPort (HP EliteBook 8440p) https://bugs.launchpad.net/bugs/621436 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-nouveau in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
