Lenovo E545 freezes with 'CPU stuck' under Kernel 3.19 (Ubuntu 15.04)

[Linus van Pelt]

Lenovo E545 freezes with 'CPU stuck' under Kernel 3.19 (Ubuntu 15.04; latest) after aprox 10s when login screen appears meanwhile Ubuntu 14.10 runs.

CPU stuck also when booting in text mode.

Kernel 3.16 under Ubuntu 15.04 seems to work either.

---
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ctb 1844 F.... pulseaudio
 /dev/snd/controlC0: ctb 1844 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 15.04
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-05-18 (366 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 20B2CTO1WW
NonfreeKernelModules: wl
Package: linux (not installed)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-34-generic.efi.signed root=UUID=186c4ba0-9c33-449a-899f-d1d1a0ec35ff ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.16.0-34.47-generic 3.16.7-ckt8
RelatedPackageVersions:
 linux-restricted-modules-3.16.0-34-generic N/A
 linux-backports-modules-3.16.0-34-generic N/A
 linux-firmware 1.143
Tags: vivid
UdevLog:

Uname: Linux 3.16.0-34-generic x86_64
UpgradeStatus: Upgraded to vivid on 2015-04-23 (25 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 01/24/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: HRET24WW (1.12)
dmi.board.asset.tag: Not Available
dmi.board.name: 20B2CTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: 0B98405 Std
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrHRET24WW(1.12):bd01/24/2014:svnLENOVO:pn20B2CTO1WW:pvrThinkPadEdgeE545:rvnLENOVO:rn20B2CTO1WW:rvr0B98405Std:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20B2CTO1WW
dmi.product.version: ThinkPad Edge E545
dmi.sys.vendor: LENOVO
---
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ctb 1844 F.... pulseaudio
 /dev/snd/controlC0: ctb 1844 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 15.04
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-05-18 (366 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 20B2CTO1WW
NonfreeKernelModules: wl
Package: linux (not installed)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-34-generic.efi.signed root=UUID=186c4ba0-9c33-449a-899f-d1d1a0ec35ff ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.16.0-34.47-generic 3.16.7-ckt8
RelatedPackageVersions:
 linux-restricted-modules-3.16.0-34-generic N/A
 linux-backports-modules-3.16.0-34-generic N/A
 linux-firmware 1.143
Tags: vivid
UdevLog:

Uname: Linux 3.16.0-34-generic x86_64
UpgradeStatus: Upgraded to vivid on 2015-04-23 (25 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 01/24/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: HRET24WW (1.12)
dmi.board.asset.tag: Not Available
dmi.board.name: 20B2CTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: 0B98405 Std
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrHRET24WW(1.12):bd01/24/2014:svnLENOVO:pn20B2CTO1WW:pvrThinkPadEdgeE545:rvnLENOVO:rn20B2CTO1WW:rvr0B98405Std:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20B2CTO1WW
dmi.product.version: ThinkPad Edge E545
dmi.sys.vendor: LENOVO

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1455974/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1455974

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.1 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.1-rc3-vivid/

[Iván Matellanes (ivanovich38)]

Hi, I'm having the same issue on a Lenovo G510.
A workaround (at least for me) is to disable NetworkManager quickly after booting, then it won't freeze.
After that, remove bcmwl-kernel-source and the problem won't happen with brcmsmac, I can re-enable NetworkManager safely.

Hardware:
08:00.0 Network controller: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter (rev 01)

Notice bug 1451789, which looks very similar.

[Linus van Pelt (c-t-b)]

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