https://bugs.freedesktop.org/show_bug.cgi?id=92258
--- Comment #36 from Vladislav Kamenev mazahakaforever@ya.ru --- (In reply to russianneuromancer from comment #35)
So freeze occur when i915 driver is used for iGPU and fglrx is used for dGPU? Without radeon driver, right?
Yup. Looks like its not a r600 problem but a kernel one.