Olli Helenius, as per http://download.lenovo.com/express/ddfm.html an update is available for your BIOS (1.38). If you update to this following https://help.ubuntu.com/community/BiosUpdate , does it change anything?
If not, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Thank you for your understanding. ** Summary changed: - Lenovo ThinkPad T420s fails to boot with discrete graphics + 10de:1056 [Lenovo ThinkPad T420s] Fails to boot with discrete graphics ** Summary changed: - 10de:1056 [Lenovo ThinkPad T420s] Fails to boot with discrete graphics + 10de:1056 [Lenovo ThinkPad T420s] Fails to boot using nvidia drivers ** Description changed: Booting a ThinkPad T420s with discrete graphics enabled in the causes a - hang during the boot. + hang during the boot. The hang happens somewhere during udev startup, I + think. - The hang happens somewhere during udev startup, I think. - - As described in #1007138, adding pci=noacpi to the kernel command line - fixes the problem. + WORKAROUND: User kernel parameter: + pci=noacpi ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-13-generic 3.11.0-13.20 ProcVersionSignature: Ubuntu 3.11.0-13.20-generic 3.11.6 Uname: Linux 3.11.0-13-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12.5-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC1: olli 1732 F.... pulseaudio - /dev/snd/controlC0: olli 1732 F.... pulseaudio - /dev/snd/pcmC0D0p: olli 1732 F...m pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC1: olli 1732 F.... pulseaudio + /dev/snd/controlC0: olli 1732 F.... pulseaudio + /dev/snd/pcmC0D0p: olli 1732 F...m pulseaudio Date: Mon Nov 11 12:08:47 2013 HibernationDevice: RESUME=UUID=99eff1be-4759-4df7-99d6-a91a4cf999ce InstallationDate: Installed on 2013-10-19 (22 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: LENOVO 4174PEG MarkForUpload: True ProcFB: - + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-13-generic root=UUID=e773c67a-283e-4a5d-b1ab-6000e6926d63 ro quiet splash pci=noacpi RelatedPackageVersions: - linux-restricted-modules-3.11.0-13-generic N/A - linux-backports-modules-3.11.0-13-generic N/A - linux-firmware 1.116 + linux-restricted-modules-3.11.0-13-generic N/A + linux-backports-modules-3.11.0-13-generic N/A + linux-firmware 1.116 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/11/2013 dmi.bios.vendor: LENOVO dmi.bios.version: 8CET57WW (1.37 ) dmi.board.asset.tag: Not Available dmi.board.name: 4174PEG dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr8CET57WW(1.37):bd04/11/2013:svnLENOVO:pn4174PEG:pvrThinkPadT420s:rvnLENOVO:rn4174PEG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4174PEG dmi.product.version: ThinkPad T420s dmi.sys.vendor: LENOVO ** Tags added: bios-outdated-1.38 needs-upstream-testing regression- potential ** Changed in: linux (Ubuntu) Importance: Undecided => Low ** Changed in: linux (Ubuntu) Status: Confirmed => 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/1250027 Title: 10de:1056 [Lenovo ThinkPad T420s] Fails to boot using nvidia drivers Status in “linux” package in Ubuntu: Incomplete Bug description: Booting a ThinkPad T420s with discrete graphics enabled in the causes a hang during the boot. The hang happens somewhere during udev startup, I think. WORKAROUND: User kernel parameter: pci=noacpi ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-13-generic 3.11.0-13.20 ProcVersionSignature: Ubuntu 3.11.0-13.20-generic 3.11.6 Uname: Linux 3.11.0-13-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12.5-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: olli 1732 F.... pulseaudio /dev/snd/controlC0: olli 1732 F.... pulseaudio /dev/snd/pcmC0D0p: olli 1732 F...m pulseaudio Date: Mon Nov 11 12:08:47 2013 HibernationDevice: RESUME=UUID=99eff1be-4759-4df7-99d6-a91a4cf999ce InstallationDate: Installed on 2013-10-19 (22 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: LENOVO 4174PEG MarkForUpload: True ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-13-generic root=UUID=e773c67a-283e-4a5d-b1ab-6000e6926d63 ro quiet splash pci=noacpi RelatedPackageVersions: linux-restricted-modules-3.11.0-13-generic N/A linux-backports-modules-3.11.0-13-generic N/A linux-firmware 1.116 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/11/2013 dmi.bios.vendor: LENOVO dmi.bios.version: 8CET57WW (1.37 ) dmi.board.asset.tag: Not Available dmi.board.name: 4174PEG dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr8CET57WW(1.37):bd04/11/2013:svnLENOVO:pn4174PEG:pvrThinkPadT420s:rvnLENOVO:rn4174PEG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4174PEG dmi.product.version: ThinkPad T420s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1250027/+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
