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3 days ago I've updated Ubuntu 12.04 LTE on our server (mainly to get new OpenSSL libs), rebooted, everything was fine. Then after 6 hours server stopped to respond. I rebooted again and it was works for 12 hours. Then it halted.

This morning after another reboot I've found "bad_area_nosemaphore" and "do_page_fault" messages on the screen.

Screenshot

Again the server stopped to respond, but after reboot it started without errors.

What can cause such a problems and how to fix them?

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  • possible duplicate of What is kernel panic?
    – MadMike
    Oct 21, 2014 at 5:12
  • Could be a hardware problem. Have tried to investigate in that direction?
    – MadMike
    Oct 21, 2014 at 5:16

1 Answer 1

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Distribution Updates often cause problems, I had errors most times Upgrading.

The best way is to backup your data and make a clean install.

Should work out fine. :)

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  • I disagree. I have some machines in my household and some have been upgrade from 6.06 to 14.04 and while there can be problems while upgrading the resulting system shouldn't be buggy or unstable. Kernel panics are definitely not to be expected.
    – MadMike
    Oct 21, 2014 at 6:06
  • Ok, but still reinstalling will help Oct 21, 2014 at 7:41
  • Not if there is a hardware problem.
    – MadMike
    Oct 21, 2014 at 7:42
  • If it's no hardware problem... Oct 21, 2014 at 9:38

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