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Message #69834
[Bug 1301601] Re: [Dell Latitude E7440] suspend sometimes freezes when lock screen activates
Console switch workaround is reliable and prevents possible hangs on
suspend when screen locking is enabled.
It's implemented with a simple script in
/etc/pm/sleep.d/99switch_to_vt1:
#!/bin/sh
# Possible workaround for bug:
# https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1301601
#
# Switch to a VT before suspending and back after resume
case "$1" in
resume|thaw)
/bin/chvt 7
;;
suspend|hibernate)
/bin/chvt 1
;;
esac
** Description changed:
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.
--
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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.
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References