https://bugs.freedesktop.org/show_bug.cgi?id=70497
--- Comment #5 from Bruno Jiménez brunojimen@gmail.com --- Here are the contents of dmesg and xorg log. They have been taken after I 'relogined' in after being thrown to the login screen.
If you need something else, just ask.
As for the git bisect thing, I'm afraid that I will need a little help there. As I have said, I'm using Arch's mesa-git repo, and I don't know how can I use bisect with it.