Created attachment 110804 [details]
Stack trace for kernel oops.

I have a working system with gnome 3.12 and mesa 10.3 and intel drivers with Xorg on linux.

At circa kernel version 3.16 the machine stopped booting into gdm. At startup there was a kernel panic with almost every kernel version.

I waited a while and checked the kernel config but didn't find anything major that had changed between the two kernel versions. This still happens with 3.17.6. The two configs can be seen from  https://bugs.gentoo.org/show_bug.cgi?id=526522

I have the stack trace as an attachment. I could not get a stack trace until I started playing around with USB serial port drivers and kexecing. Kexecing is overkill as I don't want the whole state of the machine and USB serial was useless. Then I found the efi-pstore module. 

EFI-pstore - the only good thing that begins with EFI-.

I will look in the code and I will probably find there is some config missing with a null pointer being dereferenced and that my config is horribly wrong because its a config that I have used for 5 difference machines since 2008 and hasn't been cleaned up since....

Faithfully

Timbo