Intel Flip-Flops Again: RC6 Disabled For Linux 3.2

[phoronix]

Phoronix: Intel Flip-Flops Again: RC6 Disabled For Linux 3.2

Ouch, Intel at the last minute has -- once again -- had to disable RC6 power savings support from their open-source Linux graphics driver for Sandy Bridge hardware...

http://www.phoronix.com/vr.php?view=MTAzNDg

[allquixotic]

Which users are repeatably having an issue with semaphores and RC6? Is it everyone, or just specific ASICs? If it's a feature that will take a long time to fix for everyone, maybe a hardware whitelist for the ones that don't seem to have the problem? Just a thought.

[TheJJ]

sure that the kernel command is i915.i916_enable_rc6=1 ?

i think it has to be i915.i915_enable_rc6=1 or am i wrong?

[Kayden]

Yeah, that's a typo. It's i915.i915_enable_rc6=1 (yes, it really has i915 twice).