Karmic Regression: System suspends instantly after resume from suspend.

[Robert Entner]

I suspend the system to RAM.
Disconnect the AC power.
Open lid to resume.
The system resumes and instantly suspends again.
After pressing the power butten the system correctly resumes.

This is only with Karmic, all previous releases were fine.

ProblemType: Bug
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: entner 1799 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf6adc000 irq 21'
   Mixer name : 'Intel G45 DEVCTG'
   Components : 'HDA:111d76b2,10280233,00100302 HDA:80862802,80860101,00100000'
   Controls : 32
   Simple ctrls : 19
Date: Sat Oct 10 17:38:42 2009
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=76bdfaa4-9eb7-4ac2-b197-08bd6e73e96f
MachineType: Dell Inc. Latitude E6400
Package: linux-image-2.6.31-13-generic 2.6.31-13.43
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-13-generic root=UUID=49decbbc-f8b9-4863-a4b2-6138ed4d50d9 ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=de_AT.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-13.43-generic
RelatedPackageVersions: linux-firmware 1.21
SourcePackage: linux
Uname: Linux 2.6.31-13-generic i686
UserAsoundrc:
 # ALSA library configuration file

 # Include settings that are under the control of asoundconf(1).
 # (To disable these settings, comment out this line.)
 </home/entner/.asoundrc.asoundconf>
dmi.bios.date: 02/13/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.name: 0HT027
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA12:bd02/13/2009:svnDellInc.:pnLatitudeE6400:pvr:rvnDellInc.:rn0HT027:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude E6400
dmi.sys.vendor: Dell Inc.

[Robert Entner (robertentner)]

Seems to be when I suspend connected with AC power and resume on battery.

Can I do something to narrow this bug more in?

[Andy Whitcroft (apw)]

@Robert -- does it do this every time in that combination? I have suspected this behaviour a couple of times. Please could you attach /var/log/pm-suspend.log after one of these events, and dmesg also.

[Andy Whitcroft (apw)]

@Robert -- you are correct I am seeing the same behaviour on my notebook. It seems to only trigger if you remove power durng the suspend and then re-resume. Most odd.

[Andy Whitcroft (apw)]

Ok looking at the pm-suspend.log over a 'double' suspend triggered by power removal we get the attached pm-suspend.log. Note that pm-suspend was triggered twice:

  Thu Oct 15 15:34:05 BST 2009: Running hooks for suspend.
  Thu Oct 15 15:34:18 BST 2009: Running hooks for suspend.

So it appears that the kernel and pm-utils are going what is expected of them. Something is asking for this behaviour.

[Andy Whitcroft (apw)]

This is very likely the same issue reported under bug #425411. That fix is in the upload queue.

Followed this and confirmed that we are definately calling pm-suspend twice, the kernel is only doing what is requested of it.

[Andy Whitcroft (apw)]

Testing with the fix for that does not fix this laptop.