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When I close the lid or leave the computer on for a bit the screen goes black and freezes that way. I have tried changing both screen and power settings as well as changing workspaces. Nothing seems to unfreeze or wake-up the computer.

I just installed 11.10 from 11.04, never had this problem with 11.04. Was able to close and open lid just fine.

Considering reinstalling...


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closed as off topic by Marco Ceppi Feb 3 '12 at 1:22

Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

This question should instead be filed as a bug report, thanks! Instructions here. – Jorge Castro Feb 3 '12 at 1:15

It sounds like you're having trouble with hibernation, which is invoked by closing (and opening) the lid. Look at /var/log/pm-*.log, man pm-hibernate and the files in the pm-utils package (do dpkg -L pm-utils). When my Ubuntu 11.10 hibernates, it also locks the screen (I think this is good). Could your system be trying to lock the screen and getting confused?

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If my computer is confused, then I'm screwed. I am not the most savvy with computers so I don't know what I am looking for when looking at these files. Is there anything in particular I should be seeking out? – Scott Nov 8 '11 at 20:02
All of of the lines containing "Fail" and the two lines preceding them, e.g. grep -n -B2 Fail /var/log/pm-suspend.log. The top line of each 3-line group usually ends with "success", and can be ignored. The remaining 2 lines show the script being invoked, and the error message (containing "Fail") that grep found. The -B2 says "print 2 lines before match", -n says "show line numbers". Don't post your whole log! But carefully read the last few 3-line groups. – waltinator Nov 9 '11 at 21:54

Try installing laptop-mode-tools, that has fixed the issue for me

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