Dear Christopher, Thank you for pointing out outdated BIOS. I upgraded my BIOS to the latest version.
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date output is: L70 Ver. 01.07 01/10/2014 However, I can not tell more about lock ups because of problems with nvidia-settings - no options are showed when I open Nvidia X Serves Settings ( please see attached screenshot or link here - https://dl.dropboxusercontent.com/u/4795668/Screen.jpg) It seems like nvidia driver is installed (331, tested) but problem with nvidia settings does not allow me to switch between nvidia/intel and test whether BIOS update helped or not. I didn't have lock ups while working on intel card. Also tried to install prime-indicator package to switch between cards, but it doesn't seem to work with latest updates in ubuntu 14.04 (tried to uninstall/reinstall - didn't help) - application doesn't load. I have the latest Ubuntu 14.04 updates installed (checked just before comment submission). Is there any other information I can provide to help with this issue? Kind regards, Iaroslav ** Attachment added: "Screenshot with nvidia settings" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1310762/+attachment/4101146/+files/Screen.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1310762 Title: [HP ZBook 15 Mobile Workstation] Ubuntu 14.04 random freeze and lock up To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1310762/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
