I think I found the culprit. I put back the regular Ubuntu kernel, and installed a newer version of the Nvdia driver from ppa:ubuntu-x-swat/x-updates. After doing this I can't reproduce the problem any more. I think it's some bug in the proprietary Nvidia driver that ships with Ubuntu which has since been addressed.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/996672 Title: Dell M4600 very slow after resume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/996672/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
