2015-06-25 18:22 GMT+02:00 Joseph Salisbury <email address hidden>
:

> Did this issue start happening after an update/upgrade?  Was there a
> prior kernel version where you were not having this particular problem?
>
> No, I don't think so. The laptop is rather new, didn't really work with
the LTS it came with, so I installed kubuntu 15.04 and the problem appeared
right from the beginning.
It didn't happen with 14.04LTS though, but that is unusable for other
reasons.


> 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].
>

Of course.

>
> 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'.
>
> Once testing of the upstream kernel is complete, please mark this bug as
> "Confirmed".
>
> OK,  though this will take a few days as the bug occurs rather
sporadically. (I'm a developer myself, I know the pain...)

>
> Thanks in advance.
>

Thanks for your response.

>
> [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.1-unstable/
>
> ** Changed in: linux (Ubuntu)
>        Status: Confirmed => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1468788
>
> Title:
>   Kernel panic on suspend/shutdown
>
> Status in linux package in Ubuntu:
>   Incomplete
>
> Bug description:
>   On (so far) spontaneous suspends (to RAM) or shutdowns, a kernel panic
>   (blinking caps lock) will happen in roughly a third of the cases
>   (felt, not measured). So far this has not happened when suspending
>   manually through plasma.
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 15.04
>   Package: linux-image-3.19.0-21-generic 3.19.0-21.21
>   ProcVersionSignature: Ubuntu 3.19.0-21.21-generic 3.19.8
>   Uname: Linux 3.19.0-21-generic x86_64
>   NonfreeKernelModules: wl
>   ApportVersion: 2.17.2-0ubuntu1.1
>   Architecture: amd64
>   AudioDevicesInUse:
>    USER        PID ACCESS COMMAND
>    /dev/snd/controlC1:  alex       1604 F.... pulseaudio
>    /dev/snd/controlC0:  alex       1604 F.... pulseaudio
>   CurrentDesktop: KDE
>   Date: Thu Jun 25 16:50:43 2015
>   HibernationDevice: RESUME=UUID=4487b3ba-9f46-4a25-9afd-0763b18028d3
>   InstallationDate: Installed on 2015-06-01 (24 days ago)
>   InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Release amd64
> (20150422)
>   MachineType: Dell Inc. XPS 13 9343
>   ProcFB: 0 inteldrmfb
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-21-generic.efi.signed
> root=UUID=73890e89-f87d-4854-923c-bcf888dd69a4 ro quiet splash vt.handoff=7
>   RelatedPackageVersions:
>    linux-restricted-modules-3.19.0-21-generic N/A
>    linux-backports-modules-3.19.0-21-generic  N/A
>    linux-firmware                             1.143.1
>   SourcePackage: linux
>   UdevLog: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden:
> '/var/log/udev'
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 05/15/2015
>   dmi.bios.vendor: Dell Inc.
>   dmi.bios.version: A04
>   dmi.board.name: 0310JH
>   dmi.board.vendor: Dell Inc.
>   dmi.board.version: A00
>   dmi.chassis.type: 9
>   dmi.chassis.vendor: Dell Inc.
>   dmi.modalias:
> dmi:bvnDellInc.:bvrA04:bd05/15/2015:svnDellInc.:pnXPS139343:pvr01:rvnDellInc.:rn0310JH:rvrA00:cvnDellInc.:ct9:cvr:
>   dmi.product.name: XPS 13 9343
>   dmi.product.version: 01
>   dmi.sys.vendor: Dell Inc.
>
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>