[ubuntu netbook remix] AspireOne D150 - External Video dies (X)

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http://ubuntuforums.org – I've been using the netbook remix 9.04 Jaunty on the Acer AspireOne. Everything works great but recently I started using an external monitor/keyboard. At seemingly random times, the external video goes black. I can often toggle the built-in lcd to come back on using the Fn-screen key combo but nothing seems to fix the external video except a reboot. I can do control-alt-F1 and character mode works, but trying to go back to X just gives a black screen. This happens on different monitors too. Acer support is useless, once they hear I wiped mickysoft and loaded Ubuntu, they are done helping. Any ideas? I'm not sure if this is hardware or software. (Hardware)