kernel-packages team mailing list archive

[Øyvind Stegard <oyvinst@xxxxxxxxxx>]

Lê Kiến Trúc <1301601@xxxxxxxxxxxxxxxxxx> writes:

> I have the same problem. I will try the work around from Øyvind
> Stegard (oyvinst). The problem is also on Windows so I think this is
> just a work around. Another problem is some time the keypress is
> repeat until I press another key. Both on Ubuntu and Windows

For this matter, I have had success with WORKAROUND-2, and thus I am
able to keep my lock screen on suspend. Not bullettproof, but I rarely
get suspend hangs now.

Do notice that since the time of this bug report, there have been
several kernel updates, so that might also matter. To determine if that
is the case, I'd have to run without any workarounds for a while and
look out for new hang incidents. Have you experienced the suspend hang
with the latest 14.04-kernel in -updates (kernel 3.13.0-36.63) ?


Slightly off topic, but:
Yeah, the current BIOS on this Dell model is obviously buggy. I did send
a complaint to Dell support. The support case was closed after some
dialogue (I ended up downgrading to BIOS A08), but I hope they forwarded
the technical matters to the right people and that a future BIOS version
will have more fixes for both keyboard, touchpad and suspend/resume.


Øyvind
-- 
< Øyvind Stegard
 < http://stegard.net/

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1301601

Title:
  [Dell Latitude E7440] suspend sometimes freezes when lock screen
  activates

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Closed lid, expecting laptop to suspend, but found it later hot,
  frozen and *not* suspended. (Airflow was not the best, since it was in
  a bag.)

  WORKAROUND: Hangs do not occur if the lock screen is disabled at
  suspend.

  WORKAROUND 2: Make pm-utils switch to console before suspend (and back
  after resume).

  ProblemType: KernelOops
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-21-generic 3.13.0-21.43
  ProcVersionSignature: Ubuntu 3.13.0-21.43-generic 3.13.8
  Uname: Linux 3.13.0-21-generic x86_64
  Annotation: This occured during a previous suspend and prevented it from resuming properly.
  ApportVersion: 2.14-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  lightdm    1288 F.... pulseaudio
                        oyvind     1866 F.... pulseaudio
   /dev/snd/controlC1:  lightdm    1288 F.... pulseaudio
                        oyvind     1866 F.... pulseaudio
  Date: Wed Apr  2 22:46:06 2014
  ExecutablePath: /usr/share/apport/apportcheckresume
  Failure: suspend/resume
  HibernationDevice: RESUME=UUID=d913ab68-ff2c-481e-9e50-2cddfc2bfc33
  InstallationDate: Installed on 2014-04-01 (1 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
  InterpreterPath: /usr/bin/python3.4
  MachineType: Dell Inc. Latitude E7440
  ProcCmdline: /usr/bin/python3 /usr/share/apport/apportcheckresume
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-21-generic.efi.signed root=UUID=7255658f-91f7-4dba-b6c4-185cd810e17b ro quiet splash vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-21-generic N/A
   linux-backports-modules-3.13.0-21-generic  N/A
   linux-firmware                             1.127
  SourcePackage: linux
  Title: [Dell Inc. Latitude E7440] suspend/resume failure
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

  dmi.bios.date: 02/18/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A08
  dmi.board.name: 07F3F4
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA08:bd02/18/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn07F3F4:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E7440
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1301601/+subscriptions