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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

** Tags added: kernel-da-key

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https://bugs.launchpad.net/bugs/1453352

Title:
  Crash at login screen after upgrade to 15.04 when running
  3.19.0-16-generic

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Running a Lenovo Yoga 11. Didn't have this problem on 14.10. The first
  time booting to the desktop after upgrading worked fine. After setting
  HandleLidSwitch=ignore in /etc/systemd/logind.conf and IgnoreLid=true
  in /etc/UPower/UPower.conf and rebooting, as soon as I get back to the
  login prompt the laptop shuts off after .5 seconds or so.

  If I manually boot using 3.16.0-37-generic instead of
  3.19.0-16-generic, the laptop starts without any problem.

  I tried reverting the two changes mentioned above and rebooting, but I
  still get the crash after the changes are reverted and I try to boot
  with 3.19.0-16.

  I see binary data in syslog just after 00:57:14 on 9 May 2015 which is
  around the time I was trying to get the system to boot properly.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-16-generic 3.19.0-16.16
  ProcVersionSignature: Ubuntu 3.16.0-37.51-generic 3.16.7-ckt9
  Uname: Linux 3.16.0-37-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  nate       2162 F.... pulseaudio
   /dev/snd/controlC0:  nate       2162 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sat May  9 01:13:30 2015
  HibernationDevice: RESUME=UUID=112517b5-7492-4071-bc57-56877a6ce979
  InstallationDate: Installed on 2014-10-22 (198 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64+mac (20140326)
  MachineType: LENOVO 20246
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-37-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-37-generic N/A
   linux-backports-modules-3.16.0-37-generic  N/A
   linux-firmware                             1.143
  SourcePackage: linux
  StagingDrivers: r8723au
  UpgradeStatus: Upgraded to vivid on 2015-05-09 (0 days ago)
  dmi.bios.date: 10/08/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8FCN36WW(V1.03)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Yoga2
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900058WIN
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo IdeaPad Yoga 11S
  dmi.modalias: dmi:bvnLENOVO:bvr8FCN36WW(V1.03):bd10/08/2013:svnLENOVO:pn20246:pvrLenovoIdeaPadYoga11S:rvnLENOVO:rnYoga2:rvr31900058WIN:cvnLENOVO:ct10:cvrLenovoIdeaPadYoga11S:
  dmi.product.name: 20246
  dmi.product.version: Lenovo IdeaPad Yoga 11S
  dmi.sys.vendor: LENOVO

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