Public bug reported: It appears that under 3.11.0-13, the Nvidia Optimus GPU is disabled when running on battery even if the chipset is set to discrete mode in the BIOS.
When running without AC power under the 3.11 kernel, lspci -v gives the following: http://paste.ubuntu.com/6360607/ With AC power under 3.11, the same command gives: http://paste.ubuntu.com/6360613/ If the system is booted into the 3.11 kernel with AC power connected, it can be removed and the GPU continues to function normally. I have not tested suspend and resume under the 3.11 kernel (with or without AC power). This same configuration worked properly under Raring (13.04). Booting with the 3.8 kernel and the same nvidia module version used in the above 3.11 kernel tests results in the previously experienced (correct, working) behavior. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-13-generic 3.11.0-13.20 ProcVersionSignature: Ubuntu 3.8.0-32.47-generic 3.8.13.10 Uname: Linux 3.8.0-32-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12.5-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/dsp', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D3p', '/dev/snd/pcmC1D7p', '/dev/snd/pcmC1D8p', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC29', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Mon Nov 4 12:31:48 2013 HibernationDevice: RESUME=UUID=1fbfa69c-fb52-4aee-ad35-9c523aa14974 InstallationDate: Installed on 2009-12-21 (1414 days ago) InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027) MachineType: LENOVO 2436CTO MarkForUpload: True ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-32-generic root=/dev/mapper/ssd-root ro vga=792 splash nox2apic crashkernel=384M-2G:64M,2G-:128M quiet splash RelatedPackageVersions: linux-restricted-modules-3.8.0-32-generic N/A linux-backports-modules-3.8.0-32-generic N/A linux-firmware 1.116 SourcePackage: linux UpgradeStatus: Upgraded to saucy on 2013-11-04 (0 days ago) dmi.bios.date: 08/12/2013 dmi.bios.vendor: LENOVO dmi.bios.version: G5ET94WW (2.54 ) dmi.board.asset.tag: Not Available dmi.board.name: 2436CTO 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:bvrG5ET94WW(2.54):bd08/12/2013:svnLENOVO:pn2436CTO:pvrThinkPadW530:rvnLENOVO:rn2436CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2436CTO dmi.product.version: ThinkPad W530 dmi.sys.vendor: LENOVO ** Affects: linux (Ubuntu) Importance: Undecided Status: Confirmed ** Tags: amd64 apport-bug package-from-proposed saucy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1247967 Title: nvidia optimus chipset disabled when running on battery, even in discrete mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1247967/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
