Samsung NC10 running 10.04 won't resume after suspend

[Alexander Johnson]

Samsung NC10 will not resume from suspend. Originally, I thought that this was related to bug #340014, but after booting with nohdparm and without pmpowersave the problem persists. Steve Langasek told me that I had a separate bug and requested that I post it here.

The following situations result in frozen screen upon attempting to resume the computer:

Battery power, calling for suspend from System > Shut Down...
Battery power, calling for suspend by closing laptop screen
Battery power, calling for suspend by using function key (Fn + Esc)
AC power, calling for suspend by closing laptop screen
AC power, calling for suspend by using function key (Fn + Esc)

Note that calling for suspend by System > Shut Down... while on AC power does not result in the freeze up (95% of the time).

Also note that I am able to duplicate the problem when booting from a Live USB.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-22-generic 2.6.32-22.33
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: alex 1325 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf0340000 irq 22'
   Mixer name : 'Realtek ALC272'
   Components : 'HDA:10ec0272,144dca00,00100001'
   Controls : 17
   Simple ctrls : 10
Date: Fri May 28 11:56:12 2010
HibernationDevice: RESUME=UUID=7234a05b-da44-48f5-b215-48869b3a6e4e
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: SAMSUNG ELECTRONICS CO., LTD. NC10
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=f59a74fb-499d-4046-b52c-97a09c9fe6cf ro quiet splash
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
SourcePackage: linux
dmi.bios.date: 09/08/2009
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 11CA.M015.20090908.RHU
dmi.board.name: NC10
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr11CA.M015.20090908.RHU:bd09/08/2009:svnSAMSUNGELECTRONICSCO.,LTD.:pnNC10:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNC10:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A:
dmi.product.name: NC10
dmi.product.version: Not Applicable
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

[Alexander Johnson (alexmontjohn)]

I've found that setting lock_suspend in gconf-editor>apps>gnome-power-manager to "off" allows the computer to return to my "pre-suspend" screen after I resume. However, this screen is frozen and does not recognize input from the keyboard or mouse. This is better than returning to a black screen, of course, but equally useless.

[Alexander Johnson (alexmontjohn)]

"sudo s2ram --force" works reliably with and without the AC cord attached, but I still can't get suspend/resume to work from the menu, power button, Fn + Esc or by closing the laptop screen. Any suggestions from here?

[Jeremy Foshee (jeremyfoshee)]

Hi Alexander,

If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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[Alexander Johnson (alexmontjohn)]

Which is the most recent upstream kernel?

[Alexander Johnson (alexmontjohn)]

I'm beginning to suspect that this is related to my wireless card or wireless card settings. Occasionally, suspend and resume will work under battery power by closing the lid. When the computer resumes, however, my wifi has been disconnected. This does not happen when I suspend/resume under AC power.

[Jeremy Foshee (jeremyfoshee)]

Alexander,
    That is an interesting observation. The mainline builds page that i pointed you to should have information on the most current upstream RC kernel.

Thanks!

~JFo

[Alexander Johnson (alexmontjohn)]

Updated kernel (to linux-image-2.6.34-999-generic) and did suspend/resume test. Failed suspend by dbus.

*** TEST 1 -- suspend triggered via dbus message
*** please ensure your AC cord is attached
*** machine will suspend for 20 seconds
*** press return when ready

SUSPEND FAILED, did not go to sleep

[Alexander Johnson (alexmontjohn)]

On updated kernel (linux-image-2.6.34-999-generic), still failed suspend/resume test (sudo bash /usr/share/checkbox/scripts/suspend_test --full). Computer failed dbus and failed to reawaken itself when necessary. I awoke the computer for the first few tests and then canceled the tests because the computer was not waking itself back up.

Outside of the suspend/resume test, however, the computer is resuming well after the kernel update. Functionally, it works normally (suspends and resumes normally when under AC and battery power) but cannot awaken itself during the suspend/resume test. Here are the test results:

*** TEST 1 -- suspend triggered via dbus message
*** please ensure your AC cord is attached
*** machine will suspend for 20 seconds
*** press return when ready

SUSPEND FAILED, did not go to sleep

*** TEST 2 -- suspend with AC disconnected
*** please ensure your AC cord is detached
*** machine will suspend for 20 seconds
*** press return when ready

*** TEST 3 -- suspend with AC connected
*** please ensure your AC cord is attached
*** machine will suspend for 20 seconds
*** press return when ready

*** TEST 4 -- loss of AC while suspended
*** please remove the AC cord while the machine is suspended
*** machine will suspend for 20 seconds
*** press return when ready

*** TEST 5 -- return of AC while suspended
*** please insert the AC cord while the machine is suspended
*** machine will suspend for 20 seconds
*** press return when ready

*** TEST 6 -- battery drain during suspend
*** calculates overall power drain during a long-term suspend
*** please ensure your AC cord is detached
*** machine will suspend for 20 minutes
*** press return when ready

before: 4800 mWh
after: 4600 mWh
consumed: 200 mW
sleep seconds: 25233 sec
overall usage: 28 mW

*** TEST 7 -- 30 iteration variable delay suspend/resume stress test
*** please ensure your AC cord is attached
*** machine will suspend for 20 seconds
*** NOTE: there will be no further user interaction from this point
*** press return when ready

delay 60 ...
wait for 60 seconds
delay 58 ...
wait for 58 seconds
delay 56 ...
wait for 56 seconds

Will suspend test due to failue to automatically reawaken.

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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