Sounds like it may be a video driver bug. Let's start by collecting information on your system. If you would, please open a terminal application and type the command "apport-collect 1414230". This will (hopefully) gather information on your system hardware and software configuration and attach it to this bug for further analysis.
** Changed in: unity (Ubuntu) Status: New => Incomplete ** Changed in: unity (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity in Ubuntu. https://bugs.launchpad.net/bugs/1414230 Title: v14.04 screen garbled upon restart with external monitor Status in unity package in Ubuntu: Incomplete Bug description: I have installed Ubuntu 14.04 on a Acer Aspire One 722. Everything works fine on the laptop by itself. But if I connect the laptop to an external monitor (a HDTV in this instance) via a HDMI cable, the display on the laptop screen and on the external monitor work fine: 1) until I close the screen of the laptop while the laptp is still on, let it go to sleep, and then open the screen and restart. At that point the laptop and external montor screens are black with some garbled characters. There is no way to recover the laptop but shut it down and perform a cold boot. 2) and continue to do so if I use the suspend command (from the drop down menu from the top right corner of the screen). The laptop and the external monitor go dark when the computer suspends. Upon waking both the laptop screen and the external monitor work fine. Needless to say closing the lid after using the suspend command makes no difference. Any clues on what could be happening when I close the lid of the laptop to suspend the laptop? Ubuntu information: 64 bit version DISTRIB_ID=Ubuntu DISTRIB_RELEASE=14.04 DISTRIB_CODENAME=trusty DISTRIB_DESCRIPTION="Ubuntu 14.04.1 LTS" viswa@netbook:~$ uname -r 3.11.0-18-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1414230/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp