Comment 7 for bug 319717

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Ben James (something-for-the-pain) wrote : Re: Connecting external monitor causes system to lock up.

More (possibly related) buggy behaviour...

I tried booting with the external display plugged in and found that the display is correctly detected (albeit at a low resolution, maybe 800x600), however once Ubuntu finishes booting and the desktop is displayed I get a critical battery level warning and the laptop subsequently shuts itself down (note that the laptop is running on a full battery at this point with no mains cable).

Ever since booting with the external display connected the laptop gives a critical battery warning and shuts itself down as soon as the main power cable is removed (see screenshot).

Additionally, some of the panel widgets lost their settings (for example the speed-step core frequency monitor changed from text to icon view and the system monitor also lost its colour settings).