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 Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1405489 Title: [HP ZBook 15 Mobile Workstation] Ubuntu 14.10 random freeze and lock up with NVIDIA Status in linux package in Ubuntu: Confirmed Bug description: Ubuntu 14.10 has random freezes and lock ups. ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: linux-image-3.16.0-28-generic 3.16.0-28.38 ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1 Uname: Linux 3.16.0-28-generic x86_64 ApportVersion: 2.14.7-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: afan 9511 F.... pulseaudio /dev/snd/controlC0: afan 9511 F.... pulseaudio CurrentDesktop: KDE Date: Wed Dec 24 16:49:50 2014 EcryptfsInUse: Yes InstallationDate: Installed on 2014-12-23 (1 days ago) InstallationMedia: Kubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) MachineType: Hewlett-Packard HP ZBook 15 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-28-generic root=UUID=31ffafeb-d84a-4173-81a4-99a3bde628f3 ro quiet splash rcutree.rcu_idle_gp_delay=1 RelatedPackageVersions: linux-restricted-modules-3.16.0-28-generic N/A linux-backports-modules-3.16.0-28-generic N/A linux-firmware 1.138 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/13/2014 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: L70 Ver. 01.21 dmi.board.name: 1909 dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 94.53 dmi.chassis.asset.tag: USH446L1YV dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvrL70Ver.01.21:bd08/13/2014:svnHewlett-Packard:pnHPZBook15:pvrA3009DD10203:rvnHewlett-Packard:rn1909:rvrKBCVersion94.53:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP ZBook 15 dmi.product.version: A3009DD10203 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1405489/+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
