1969:2062 [STAGING] Locks up logging in

Netbook locks up immediately after logging in to default Ubuntu 11.04 desktop. this happens 100% of the time with the default 11.04 kernel, both on the 32-bit and 64-bit releases. If I install 10.10 and use the update-manager to upgrade to 11.04, this doesn't happen with the 2.6.35 series of kernels. It has happened with each release to date of the 2.6.38 kernel.

The netbook is setup to dual boot with windows 7 Home Premium. If I boot into Windows 7 immediately after one of these lockups, then immediately reboot into Natty, the lockup after logging in does not occur. This can also be reproduced 100% of the time.

This only occurs on an installed system. Booting 11.04 from a "live" thumb drive does not result in a lockup.

WORKAROUND: It looks like this is an issue with a kernel module (atl1c). After blacklisting this module, Ubuntu 11.04 boots with the 2.6.38 series kernel without needing a preceeding Windows 7 boot.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.42
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 1: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: carl 1378 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Generic'/'HD-Audio Generic at 0x90544000 irq 41'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100200'
   Controls : 4
   Simple ctrls : 1
Card0.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Card1.Amixer.info:
 Card hw:1 'SB'/'HDA ATI SB at 0x90540000 irq 16'
   Mixer name : 'Conexant CX20584'
   Components : 'HDA:14f15068,10250543,00100302'
   Controls : 9
   Simple ctrls : 9
Date: Mon Apr 18 18:47:58 2011
HibernationDevice: RESUME=UUID=605dc6c5-4bf3-43fe-927a-eccb414a9ec5
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330)
Lsusb:
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 002: ID 0402:9665 ALi Corp.
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Acer Aspire One 522
ProcEnviron:
 LANGUAGE=en_CA:en
 PATH=(custom, user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=94e2285e-bb00-4cf8-9995-b26381ed8435 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-8-generic N/A
 linux-backports-modules-2.6.38-8-generic N/A
 linux-firmware 1.50
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
StagingDrivers: brcm80211
Title: [STAGING]
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/09/2010
dmi.bios.vendor: Acer
dmi.bios.version: V1.03
dmi.board.name: Aspire One 522
dmi.board.vendor: Acer
dmi.board.version: V1.03
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAcer:bvrV1.03:bd12/09/2010:svnAcer:pnAspireOne522:pvrV1.03:rvnAcer:rnAspireOne522:rvrV1.03:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.name: Aspire One 522
dmi.product.version: V1.03
dmi.sys.vendor: Acer