https://bugs.freedesktop.org/show_bug.cgi?id=51652
--- Comment #1 from okias d.okias@gmail.com 2012-07-14 09:36:38 PDT --- 1a) I tested switched (so Asus on DVI and LG on VGA - switched) and it booted
1b) secondary I tested only Asus on DVI and it had same problem... only in this line numbers (13 => 12 etc.) is little bit changing: radeon 0000:00:01.0: GPU lockup (waiting for 0x0000000000000016 last fence id 0x0000000000000013)
1c) tested only LG on VGA and it failed. (same errors)
2) of fly was tested: VGA only, DVI only, both vga+dvi, both dvi+vga, seems ok sometimes it start rebooting, but it takes a some time.