suspend/resume regression with 10.10

10.04 suspend/hibernate worked beautifully on this Toshiba U300. Stock ubuntu kernels all the way to the day I dist-upgraded to 10.10.

The default kernels in 10.10 do not suspend/resume correctly. No specific errors in pm-suspend.log. It appears that entering suspend works fine, but it wakes up *immediately* and I'm at a fb console with the standard login prompt, but the computer's frozen solid. none of the 10.10 kernel updates have resolved this, and the regression has carried forward into the 11.04 alpha release of Ubuntu.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image (not installed)
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
Uname: Linux 2.6.38-1-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: andrew 3417 F.... pulseaudio
 /dev/snd/pcmC0D0p: andrew 3417 F...m pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf0700000 irq 48'
   Mixer name : 'Realtek ALC268'
   Components : 'HDA:10ec0268,1179ff50,00100003 HDA:11c11040,11790001,00100200'
   Controls : 14
   Simple ctrls : 9
Date: Sat Feb 5 10:00:14 2011
InstallationMedia: Kubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MachineType: TOSHIBA Satellite U300
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=en_US.UTF-8
 LANGUAGE=
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-1-generic root=UUID=892b0f21-cbe1-420f-a871-a70096463879 ro acpi_sleep=nonvs crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-1-generic N/A
 linux-backports-modules-2.6.38-1-generic N/A
 linux-firmware 1.46
SourcePackage: linux
dmi.bios.date: 08/30/2007
dmi.bios.vendor: TOSHIBA
dmi.bios.version: V2.50
dmi.board.name: Satellite U300
dmi.board.vendor: TOSHIBA
dmi.board.version: Not Applicable
dmi.chassis.type: 1
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnTOSHIBA:bvrV2.50:bd08/30/2007:svnTOSHIBA:pnSatelliteU300:pvrPSU30C-TP208C:rvnTOSHIBA:rnSatelliteU300:rvrNotApplicable:cvnTOSHIBA:ct1:cvrN/A:
dmi.product.name: Satellite U300
dmi.product.version: PSU30C-TP208C
dmi.sys.vendor: TOSHIBA