Roland Dreier, as per http://support.lenovo.com/us/en/products/Laptops- and-netbooks/ThinkPad-T-Series-laptops/ThinkPad-T440p?beta=false an update to your computer's buggy and outdated BIOS is available (2.36). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?
For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report. Once the BIOS is updated, if the problem is still reproducible: 1) Please provide the output of the following terminal command (not perform an apport-collect): sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date 2) Please make a comment specifically advising on if there was an improvement or not. 3) Please mark this report Status Confirmed. If it's not reproducible, please mark this as Invalid. Thank you for your understanding. ** Tags removed: kernel-bug-exists-upstream ** Tags added: bios-outdated-2.36 kernel-bug-exists-upstream-3.13-rc8 needs-upstream-testing ** Changed in: linux (Ubuntu) Importance: Medium => Low ** Changed in: linux (Ubuntu) Status: Triaged => Incomplete -- 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/1268669 Title: Lenovo T440p (Haswell/NVidia optimus gfx) flaky unless I blacklist nouveau Status in linux package in Ubuntu: Incomplete Bug description: I have a new Lenovo T440p laptop, which has a Haswell CPU and NVidia GPU in an "optimus" setup. In a default 14.04 install, the system is quite flaky: suspend doesn't work and doing lspci apparently corrupts memory (the system hits random weird failures and then freezes about 10 seconds after running lspci). If I blacklist the nouveau module then the system seems to work fine (suspend/resume is good and lspci doesn't cause problems). ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-2-generic 3.13.0-2.17 ProcVersionSignature: Ubuntu 3.13.0-2.17-generic 3.13.0-rc7 Uname: Linux 3.13.0-2-generic x86_64 ApportVersion: 2.13.1-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: roland 2111 F.... pulseaudio CurrentDesktop: Unity Date: Mon Jan 13 09:35:00 2014 HibernationDevice: RESUME=UUID=af5ffc5d-f07d-48f1-8bab-636acd0359be InstallationDate: Installed on 2014-01-11 (2 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140109) MachineType: LENOVO 20ANCTO1WW ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-2-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro plymouth:debug splash quiet drm.debug=0xe RelatedPackageVersions: linux-restricted-modules-3.13.0-2-generic N/A linux-backports-modules-3.13.0-2-generic N/A linux-firmware 1.121 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/04/2013 dmi.bios.vendor: LENOVO dmi.bios.version: GLET43WW (1.18 ) dmi.board.asset.tag: Not Available dmi.board.name: 20ANCTO1WW dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGLET43WW(1.18):bd12/04/2013:svnLENOVO:pn20ANCTO1WW:pvrThinkPadT440p:rvnLENOVO:rn20ANCTO1WW:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20ANCTO1WW dmi.product.version: ThinkPad T440p dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268669/+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