Public bug reported:
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
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
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https://bugs.launchpad.net/bugs/1268669
Title:
Lenovo T440p (Haswell/NVidia optimus gfx) flaky unless I blacklist
nouveau
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