Oops in intel_tv_detect when docking laptop, or starting X with it already docked

This seemed to work on Friday (28th Jan), but doesn't work this morning (31st Jan), and the kernel looks like the only related package I updated since then.

When I dock my laptop this morning, it locks up completely with the internal display blank and the external display still in standby. If I boot it with it sat on the dock (external display plugged in), I see plymouth, but then both displays go blank again and it freezes completely (presumably when X starts).

On one occasion, my laptop was kind enough to turn on its internal display once I undocked it after it froze, and I got this photo:

http://people.canonical.com/~chrisccoulson/Oops.JPG

From that point, it's basically dead. It doesn't respond to anything other than holding down the power button.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-1-generic 2.6.38-1.28
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
AcpiTables:
 Error: command ['gksu', '-D', 'Apport', '--', '/usr/share/apport/dump_acpi_tables.py'] failed with exit code 1: Sorry, try again.
 GNOME_SUDO_PASS
 Sorry, try again.
 sudo: 3 incorrect password attempts
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
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: chr1s 4022 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf6afc000 irq 46'
   Mixer name : 'Intel Cantiga HDMI'
   Components : 'HDA:111d76b2,10280263,00100302 HDA:80862802,80860101,00100000'
   Controls : 23
   Simple ctrls : 12
Date: Mon Jan 31 12:16:42 2011
DistributionChannelDescriptor: canonical-test
HibernationDevice: RESUME=UUID=c9a6dad6-b46d-4923-8510-4616fbc27c75
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MachineType: Dell Inc. Latitude E5500
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, user)
 LANG=en_GB.utf8
 LC_MESSAGES=en_GB.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-1-generic root=UUID=4ce5e12b-6e82-4fa4-90ff-7d9859d7504e ro 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: 11/05/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A15
dmi.board.name: 0DW635
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA15:bd11/05/2009:svnDellInc.:pnLatitudeE5500:pvr:rvnDellInc.:rn0DW635:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude E5500
dmi.sys.vendor: Dell Inc.