Messages in this thread | | | Date | Thu, 01 Dec 2011 14:45:51 -0800 | From | Andy Lutomirski <> | Subject | Re: i915: RC6 causes sudden shutdowns |
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On 11/23/2011 03:43 PM, Patrik Kullman wrote: > Hi, > > I recently acquired the Asus Zenbook UX31E but have been looking for > ways to extend the battery life. > > I read that the i915_enable_rc6 parameter could decrease power usage > significantly and tried it with the 3.1.1 and 3.1.2 kernels, and > indeed it does. > However, I (and the other Zenbook-owners from the Ubuntu forums) > experience sudden, unexpected shutdowns (for me, 1-4 times per day) > with this parameter. > It's as sudden as a power loss.
Do you have DMAR enabled? If so, it's a known problem and it's being worked on (and the default will not change for you AFAICT). If not, you should send a bug report to the intel-gfx -- several people there care about this.
--Andy
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