>[19442.605035] WARNING: at /build/buildd/linux-2.6.31/fs/buffer.c:1152 mark_buffer_dirty+0x86/0xb0()

Like other bugs similar to this it happened after I resumend from suspend. One more thing I want to mention is that when I suspended I had a second LCD attached to my VGA port. But I unpluged it AFTER I suspended and went somewhere else, THEN when I resumed my screen was black. Im already used to this and I know that I can still enter my password because the gnome login dialoge appears on the screen which is not attached. After I enter the password the FN+F7 key combination works again and i can get my screen back by presing it a few times.
Im not sure if this is related to that bug, but its the only thing that I can think of at the moment.

ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: sebastiangeiger 2402 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf8220000 irq 17'
   Mixer name : 'Analog Devices AD1984'
   Components : 'HDA:11d41984,17aa20d6,00100400'
   Controls : 29
   Simple ctrls : 18
Date: Thu Oct 15 14:23:14 2009
DistroRelease: Ubuntu 9.10
Failure: oops
HibernationDevice: RESUME=UUID=03b411e9-268b-4f2f-a465-e2f630f674e9
MachineType: LENOVO 7673A35
Package: linux-image-2.6.31-14-generic 2.6.31-14.46
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/sda11 ro quite splash
ProcVersionSignature: Ubuntu 2.6.31-14.46-generic
RelatedPackageVersions: linux-firmware 1.22
SourcePackage: linux
Tags: kernel-oops
Title: >[19442.605035] WARNING: at /build/buildd/linux-2.6.31/fs/buffer.c:1152 mark_buffer_dirty+0x86/0xb0()
Uname: Linux 2.6.31-14-generic x86_64
WpaSupplicantLog:

dmi.bios.date: 03/12/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7NETC0WW (2.20 )
dmi.board.name: 7673A35
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7NETC0WW(2.20):bd03/12/2009:svnLENOVO:pn7673A35:pvrThinkPadX61:rvnLENOVO:rn7673A35:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 7673A35
dmi.product.version: ThinkPad X61
dmi.sys.vendor: LENOVO