On Thu, Jul 14, 2011 at 10:37:15AM +0300, Pekka Enberg wrote:
This if fixed in mainline as of commit a94919eaddaa3fede1df8563ce4d761a75374645 ("Revert "drm/i915: enable rc6 by default"). Keith, it would have been nice to include a 'Reported-by' and/or a link to this discussion in the changelog for future reference.
The correct commit is 05bd42688dbc066d4e2689b6f73c0470601f788b, the one you mentioned is "Idling requires waiting for the ring to be empty".
Bye Francesco