Hmm, it looks like you are running out of RAM. What about trying with more swap space allocated? How much RAM does your laptop have?
Btw, I have serious stability issues with my M4800's wifi module. ** Changed in: bcmwl (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bcmwl in Ubuntu. https://bugs.launchpad.net/bugs/1323882 Title: Dell M4800 kernel crashes every few hours Status in “bcmwl” package in Ubuntu: Incomplete Bug description: Every few hours my laptop screen locks up, the fans max out, and it needs a hard power reset. I'm running Ubuntu -14.04 on a Dell Precision M4800. The memory test passed. $ lsb_release -rd Description: Ubuntu 14.04 LTS Release: 14.04 uname -a Linux noel-m4800 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux /var/log/kern.log is attached To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1323882/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp