Comment 52 for bug 761065

Same error with HP DV6 6030el i72630 and AMD Radeon HD 6470M. I can not use radeon driver because Natty freeze during the boot so I have to use i915. But sometimes and randomly I receive freeze also with this driver. Keyboard and mouse are locked, alt+stamp REISUB doesn't work. Looking the kernel log some minute before the freeze I can find this error [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed. Now I'm using the solution in #18 and seems to work fine. I can understand why this bug is classified "medium" .....freezes like these impose forced shutdowns with high risks of damage to the hardware. I was near to use again windows just only to safeguard my purchase. Please fix it!!! Thanks