https://bugzilla.kernel.org/show_bug.cgi?id=75211
--- Comment #1 from Michel Dänzer michel@daenzer.net --- (In reply to Darren Salt from comment #0)
I'm seeing a divide error during X startup, causing X to hang (requiring reboot to clear). The trigger is a commit in xserver git:
commit 4c3932620c29c91dfbbc8eb09c84efcaa7ec873e Author: Keith Packard keithp@keithp.com Date: Fri Apr 25 08:22:15 2014 -0700
hw/xfree86: Restore API compatibility for cursor loading functions
That commit broke the Xorg video driver ABI. Did you rebuild xf86-video-ati Git[0] when crossing this xserver Git commit?