I have updated the BIOS. ( Asside: For any other ZBook users note that the directions at https://help.ubuntu.com/community/BIOSUpdate are incorrect as there is no README in the download from HP. Instead, on Boot press "ESC" to get into the BIOS setup and follow the instructions in the "BIOS Upgrade" section. )
After having upgraded the BIOS I changed NVIDIA back to the "NVIDIA - Power mode" $ cat /proc/acpi/bbswitch 0000:01:00.0 ON And now can confirm that this issue still occurs. Changing to confirmed as per instructions and posting updated BIOS data. $ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date L70 Ver. 01.30 12/08/2014 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1405489 Title: [HP ZBook 15 Mobile Workstation] Ubuntu 14.10 random freeze and lock up with NVIDIA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1405489/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
