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I recently bought (a month ago) Dell Latitude E5530 which comes pre-installed with Ubuntu 11.10. I removed Ubuntu 11.10 and installed 12.04 LTS right after the purchase. Everything worked out of box but occasionally Ubuntu completely hangs. The screen freezes and I can't even switch to other terminals by pressing (CTRL+ALT+F*). Whenever the screen freezes, CPU fan speed also increases. This is not happening when running particular applications. I mean it can hang without giving any reason or error displayed and while running any application. In short currently I can't able to reproduce system hang myself. I also want to mention that sometimes it never hangs complete day.

Here are the specs of my laptop:

Processor: Core i7-3520M CPU @ 2.90GHz

Memory: 8GB

HDD: 500GB, 7200rpm (Model=ST9500423AS)

Graphics: Intel HD 4000

Operating System: Ubuntu 12.04 LTS (64-bit)

Thanks!

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closed as off topic by Jorge Castro, fabricator4, Mik, hhlp, fossfreedom Dec 11 '12 at 21:37

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, and as such is off-topic, thanks! Instructions on filing a bug report are here. –  Jorge Castro Dec 11 '12 at 18:27
    
You should try to install the latest 12.04.2 64 bits (LTS) (note the .2) which seems to be fine on my E5530. –  ring0 May 2 '13 at 8:10

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