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In Ubuntu 10.10 and 11.04 my Dell mini 9 starts to discharge and run off of battery very soon after it is fully charged while it's still plugged into the the power adapter. If I restart it still doesn't see the AC adapter. If I shutdown and cold boot it will start charging again until the battery is full and the circle begins a new. It started happening at some point with 10.10 and I just now am getting around to doing something about it.

The mini 9 is running it's latest BIOS A07. I opened the thing up to check for loose charger connections and everything looks good. Is there a different power management driver I can try? Is there a power management log I can check somewhere?

EDIT: What libraries do I roll back and lock to 10.04 or up to 11.10? I'd like to keep with 11.04 if possible until 11.10 is officially released.

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I'm not clear - have you upgraded to 11.10 - or are you asking how to go back to a previous release? The only way to go backwards is to do a fresh install. –  fossfreedom Jul 24 '11 at 17:17
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1 Answer

It might have something to do with the (nearly) fixed power regressions in the linux kernel. I'd suggest (for laptops that is) to go back to 10.04 or go to 11.10 --> http://cdimage.ubuntu.com/daily-live/current/ if you are spunky enough to try an alpha. If you want to get both though, you can double/triple boot (triple if you left Wins on your dell). Hope that helps!

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