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I have 12.04 installed on my laptop. It was working perfectly until yesterday. Since then, no matter whether I choose restart shutdown or suspend option from GUI, my computer suspends. Please give suggestions.

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closed as off topic by Eliah Kagan, jokerdino, belacqua, Mitch, fossfreedom Aug 20 '12 at 10:20

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This should be reported as a bug. (We might close this as off-topic.) Also, to get help with this or effectively report it as a bug, it will be important for you to specify the exact brand and model of your laptop, whether you're using the 32-bit or 64-bit version of Ubuntu, if running sudo shutdown -P now still successfully shuts the machine down, and if any updates were installed yesterday. –  Eliah Kagan Aug 19 '12 at 4:25
(/var/log/dpkg.log, /var/log/apt/history.log, and /var/log/apt/term.log contain detailed information about that--so you can check them, and even attach them to the bug). If the above shutdown command also suspends, run ubuntu-bug linux to begin reporting the bug. Otherwise, probably run ubuntu-bug $(pidof indicator-session-service) (and manually attach /var/log/dmesg and /var/log/kern.log). –  Eliah Kagan Aug 19 '12 at 4:26
the laptop worked fine yesterday without me trying anything. But its again giving problems today. –  Shagun Aug 20 '12 at 6:55