[Bug 1259850] [NEW] KDE powermanagement crashes kernel

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I have a Dell Latitude D6510 running (K)ubuntu 13.10 with the current
kernel (3.11.0-14). In KDE when I pull the power cord, the system
instantly freezes - completely, leaving no helpful traces of the cause
in syslog or pm-powersave.log.

It does not happen w/o a running KDE session or when I switch to Unity
or XFCE. Hence, I suspect KDE triggering the bug.

Googling for "power unplug crash linux kernel" yields a bunch of somewhat similiar issues, but those all seem slightly diffrent from what I see. In fact, I have had the/an "unplug crash issue" before like a year or so ago. Somehow it vanished, and now it is back again, so this could be a kernel regression.
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ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  deas       6090 F.... pulseaudio
DistroRelease: Ubuntu 13.10
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=901a5939-36e9-4493-9f9d-68a6fea3613e
InstallationDate: Installed on 2011-03-07 (1009 days ago)
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101008)
MachineType: Dell Inc. Latitude E6510
MarkForUpload: True
Package: linux 3.11.0.14.15
PackageArchitecture: amd64
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-14-generic root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-14-generic N/A
 linux-backports-modules-3.11.0-14-generic  N/A
 linux-firmware                             1.116
Tags:  saucy
Uname: Linux 3.11.0-14-generic x86_64
UpgradeStatus: Upgraded to saucy on 2013-10-17 (54 days ago)
UserGroups: adm admin cdrom dialout libvirtd lp lpadmin plugdev sambashare vboxusers
dmi.bios.date: 05/09/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.name: 02K3Y4
dmi.board.vendor: Dell Inc.
dmi.board.version: A02
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA12:bd05/09/2012:svnDellInc.:pnLatitudeE6510:pvr0001:rvnDellInc.:rn02K3Y4:rvrA02:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6510
dmi.product.version: 0001
dmi.sys.vendor: Dell Inc.

** Affects: meta-kde (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-collected kernel-bug saucy
-- 
KDE powermanagement crashes kernel
https://bugs.launchpad.net/bugs/1259850
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