Looks like it's a kernel error message.
A web search suggested a person having this error fixed it by updating their
kernel and xserver.
You can try a newer kernel from e.g. http://jxself.org/linux-libre/
Updating xserver could be accomplished by getting the various
xserver-whatever-raring packages. You probably only need the corresponding
xserver packages you already have without the -raring part. You certainly
don't need the -dev or -dbg packages. (If you end up losing GUI somehow doing
this try installing xserver-xorg and the dependencies it suggests...)
