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[xubuntu] Unusually high power consumption with Xubuntu 12.04, but not with Ubuntu 12.04

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http://ubuntuforums.org – About 8 months ago I installed Ubuntu 12.04 LTS on my wife's Dell Mini 9, and it was running reasonably well, apart from sometimes freezing when waking up from suspend. In an effort to speed it up a bit, I just recently replaced Ubuntu with Xubuntu 12.04 LTS. It's running better, not crashing or freezing at all. However, the power consumption is unusually high. The average at idle is more than 16W, which gives about 1.5h battery life - a big difference to the usual 3-4h with Ubuntu. I estimate normal power consumption should be around 7-8W, what other Dell Mini 9 users are reporting. In all m (Hardware)