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My laptop is Thinkpad x220, installed with Ubuntu 12.04, gnome 3 desktop. It can normally shutdown before. But yesterday, it can not shutdown when on battery(neither use power off button nor shutdown command), but on AC power, it still shutdown normally. So can anybody give me some suggestion?

I didn't install any software update before the problem occured.

UPDATE1: there's no error, it just stuck in the shutdown screen, the cpu was still working, but there was no disk io at all.

UPDATE2: I've post the the dmesg output to pastebin

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  • What error do you get? Aug 1, 2012 at 14:06
  • @Mechanicalsnail there's no error, it just stuck in the shutdown screen, the cpu was still working, but there was no disk io at all.
    – jiluo
    Aug 1, 2012 at 14:11
  • What's the output of dmesg? Aug 1, 2012 at 14:14
  • try: "shutdown -h now" in a command line interface like gnome-terminal
    – l1zard
    Aug 1, 2012 at 14:18
  • 1
    use pastebin.com
    – l1zard
    Aug 1, 2012 at 14:29

2 Answers 2

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The discussion on this page will help you: http://ubuntuforums.org/showthread.php?t=1968376

It talks about the shut down problems.

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  • I've see this before, but this doesn't match my situation, I don't have nvidia driver. And my computer just have problem from yesterday, it have already works fine for months
    – jiluo
    Aug 1, 2012 at 14:56
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Just remove the package "laptop-mode-tool", and it will work! I have the same problem on my openSUSE, and this works for me.

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