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[Bug 1457447] Re: Ubuntu freezes when suspending (to RAM)


Thanks for taking the time to report this bug and helping to make Ubuntu
better. We appreciate the difficulties you are facing, but this appears
to be a "regular" (non-security) bug.  I have unmarked it as a security
issue since this bug does not show evidence of allowing attackers to
cross privilege boundaries nor directly cause loss of data/privacy.
Please feel free to report any other bugs you may find.

** Information type changed from Private Security to Public

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  Ubuntu freezes when suspending (to RAM)

Status in linux package in Ubuntu:

Bug description:
  I installed Ubuntu 15.04 on a DELL XPS 13 notebook (2015 edition,
  model 9343, bios A03, dual boot w/ Windows). I am having an annoying
  problem. Oftentimes Ubuntu crashes/freezes when I try to suspend (to
  RAM). I have already reinstalled Ubuntu (fresh reinstall) but the
  problem persists. I ran the bios diagnostic check (even the extended
  one) and no hardware problems were detected. I also ran a memory check
  via Windows and again no memory problems were detected.

  The problem: Sometimes when I try to suspend the computer freezes: the
  screen turns blank and the CAPS LOCK key indicator blinks. I am unable
  to ssh into the machine. The problem also happened with previous

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-18-generic 3.19.0-18.18
  ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6
  Uname: Linux 3.19.0-18-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
   /dev/snd/controlC1:  cribari    1698 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Thu May 21 08:49:19 2015
  HibernationDevice: RESUME=UUID=cd3c9665-089d-424b-8ebb-991b8698fbcd
  InstallationDate: Installed on 2015-05-19 (2 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: Dell Inc. XPS 13 9343
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-18-generic.efi.signed root=UUID=f64987a0-2ebc-4767-a391-6c3deae6c764 ro quiet splash vt.handoff=7
   linux-restricted-modules-3.19.0-18-generic N/A
   linux-backports-modules-3.19.0-18-generic  N/A
   linux-firmware                             1.143.1
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/25/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A03
  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.:bvrA03:bd03/25/2015: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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