Laptop locks up once all memory used and encrypted swap in use

[Mike Udall]

Present state:

KiB Mem: 3936908 total, 3737952 used, 198956 free, 12312 buffers
KiB Swap: 4194300 total, 862544 used, 3331756 free, 1215956 cached

If, for instance, more chrome tabs are opened, the pointer stutters and eventually the laptop locks up. Encrypted swap is 4gb in size and on an SSD. The UI is unusable. The easiest recovery is to switch to a VT and kill a process.

Swapon -s gives:

Filename Type Size Used Priority
/mnt/4096.swap file 4194300 862192 -1

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-15-generic 3.11.0-15.25
ProcVersionSignature: Ubuntu 3.11.0-15.25-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: mud 2637 F.... pulseaudio
Date: Sun Mar 16 15:34:43 2014
InstallationDate: Installed on 2013-03-15 (366 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: Notebook W250EGQ / W270EGQ
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-15-generic root=UUID=159cd35a-039e-4c22-a52a-6820515bafe0 ro quiet splash pcie_aspm=force quiet splash pcie_aspm=force vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-15-generic N/A
 linux-backports-modules-3.11.0-15-generic N/A
 linux-firmware 1.116
SourcePackage: linux
UpgradeStatus: Upgraded to saucy on 2013-12-17 (88 days ago)
WifiSyslog: Mar 16 14:55:46 mud-new kernel: [60456.472568] perf samples too long (5076 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
dmi.bios.date: 01/07/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W250EGQ / W270EGQ
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd01/07/2013:svnNotebook:pnW250EGQ/W270EGQ:pvrNotApplicable:rvnNotebook:rnW250EGQ/W270EGQ:rvrNotApplicable:cvnNoEnclosure:ct9:cvrN/A:
dmi.product.name: W250EGQ / W270EGQ
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook

[Brad Figg (brad-figg)]

This change was made by a bot.

[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 v3.14 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/v3.14-rc7-trusty/

[Mike Udall (mikeudalluk)]

Sorry - can't install an upstream kernel without uninstalling important software:

ERROR (dkms apport): kernel package linux-headers-3.14.0-031400rc7-generic is not supported
Error! Bad return status for module build on kernel: 3.14.0-031400rc7-generic (x86_64)

[Mike Udall (mikeudalluk)]

Is there a way to temporarily avoid it building other modules against that kernel without uninstalling the software?