Exactly the same issue on Asus N550JV laptop (hybrid graphics: Intel HD 4600/nVIDIA GT 750M), fresh install of 14.04, nvidia-331. Random lockups when using nVIDIA card, no lockups at all when using Intel. Lockups happen more often when nVIDIA card is under load (for example, playing Civilization V).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1184451 Title: Ubuntu 13.10 random screen freeze while Normal OS activites To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1184451/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs