The new broadcom driver (brcm80211) sort of worked for me, but then I started visiting a few large/busy networks, and started to experience great instability. Here at the IETF meeting (with up to 960 nodes connected to a WLAN with many hops and many SSIDs), I had many oopses and some freezes, to the point where I had to blacklist brcm80211.
My laptop is a HP Mini 5103 with an Atom N550.
ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-7-generic 2.6.38-7.39
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6
Uname: Linux 2.6.38-5-generic x86_64
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: leinen 2993 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0x90500000 irq 45'
Mixer name : 'IDT 92HD75B2X5'
Components : 'HDA:111d7608,103c1608,00100202'
Controls : 13
Simple ctrls : 8
Date: Mon Mar 28 10:44:58 2011
Failure: oops
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110304)
MachineType: Hewlett-Packard HP Mini 5103
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-5-generic root=UUID=a5198bcf-3a9d-4d51-a7f3-6bb33c0d7989 ro verbose splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.38-5-generic N/A
linux-backports-modules-2.6.38-5-generic N/A
linux-firmware 1.49
SourcePackage: linux
Title: WARNING: at /build/buildd/linux-2.6.38/net/mac80211/rx.c:2881 ieee80211_rx+0xad/0x1d0 [mac80211]()
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/20/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68PGP Ver. F.02
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 1608
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 92.04
dmi.chassis.asset.tag: CNU106101B
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68PGPVer.F.02:bd10/20/2010:svnHewlett-Packard:pnHPMini5103:pvr:rvnHewlett-Packard:rn1608:rvrKBCVersion92.04:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Mini 5103
dmi.sys.vendor: Hewlett-Packard
I can confirm that this bug is present on my MacBook Air (3,2). I do, as described, only get the error when on busy networks (~250 nodes maybe, >1 AP:s).