Comment 0 for bug 672591

I had some problems resuming from suspend with my MSI Wind U100. It seemed to power up, but all I got was a blank screen. Sometimes, I would get 2-3 seconds when I could move the mouse around OK, but then it would inevitably freeze and I'd be forced to hard-reset the machine by physically powering it off. It would be completely unresponsive to any keyboard or trackpad commands, including switching to other terminals (ctrl+alt+f1, etc). Interestingly, this would only happen when I was running on battery power. On AC power, suspend and resume worked fine, but once I was on battery power, my laptop would freeze upon resume and I'd be forced to hard-reset. Even more interestingly, I could suspend and resume fine on AC power, but then once I unplugged the power cord, the computer would immediately freeze again.

After reading a post on ubuntuforums (http://ubuntuforums.org/showthread.php?p=10089125#post10089125) where other laptop users mention messages about their Realtek wireless cards, I decided to try removing the r8187se module and seeing if it resumed from suspend while on battery power. Amazingly, everything worked. So then I edited /etc/pm/config.d/unload_module to add the line SUSPEND_MODULES="r8187se" and now everything works fine.

So I'm not sure how to pinpoint the exact problem, but according to my experience and the forum posters' experiences, this has only been a problem since Maverick. It may be as recent as the latest kernel update, but no older than the kernel update that came with 10.10. So it might be a problem with the new kernel and the r8187se module, or it might be a problem with something else about the way these computers suspend and resume.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-22-generic 2.6.35-22.35
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC1200 Analog [ALC1200 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC1200 Analog [ALC1200 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: jon 1378 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xffe00000 irq 42'
   Mixer name : 'Realtek ALC1200'
   Components : 'HDA:10ec0888,14620110,00100101'
   Controls : 17
   Simple ctrls : 10
Date: Mon Nov 8 21:52:23 2010
HibernationDevice: RESUME=UUID=6772b5de-d2c3-4cc0-a071-d58978ea2061
InstallationMedia: Ubuntu-Netbook 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: MICRO-STAR INTERNATIONAL CO., LTD U-100
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=c6d18b94-3c3a-4d36-b476-db5b1b329d4b ro acpi_sleep=nonvs quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
RfKill:

SourcePackage: linux
StagingDrivers: r8187se
Title: [STAGING]
dmi.bios.date: 10/06/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.3
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: U-100
dmi.board.vendor: MICRO-STAR INTERNATIONAL CO., LTD
dmi.board.version: Ver.001
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO., LTD
dmi.chassis.version: Ver.001
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.3:bd10/06/2008:svnMICRO-STARINTERNATIONALCO.,LTD:pnU-100:pvrVer.001:rvnMICRO-STARINTERNATIONALCO.,LTD:rnU-100:rvrVer.001:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvrVer.001:
dmi.product.name: U-100
dmi.product.version: Ver.001
dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO., LTD