Rebooting yes, Shutdown no

Posted by Chiotis Leonidas on Ask Ubuntu See other posts from Ask Ubuntu or by Chiotis Leonidas
Published on 2012-06-04T10:09:18Z Indexed on 2012/06/04 10:51 UTC
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Hello everyone and thanks in advance.

I am new in Ubuntu and have the 12.04 version dual boot with Windows XP. I have the following problem. The laptop can reboot using the reboot option from the menu but it cannot shut down. It starts shutting down, the dots appear but then it freezes and does not turn off. Sometimes it shuts down normally (usually just after an update) but then it loses that capability again.

Some strange things, I noticed that when the dots freeze, the USB mouse loses power, BUT the usb-powered cooling pad continues to work

The only Fn shortcuts that work all the time are the Volume up, down and mute, BUT sometimes when the other Fn combinations (screen-off etc) work the computer shuts down normally

I searched a lot on my own, please help.

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