Looking more closely at the logs, this appeared in my syslog when the bug manifested itself yesterday for the first time in eight days:
May 28 13:56:27 greengage kernel: [683758.866789] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id -- [965g] Regression: monitor sometimes does not wake up from sleep https://bugs.launchpad.net/bugs/582938 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel 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
