On Tue, Dec 11, 2012 at 10:21 AM, Christian Menzel < [email protected]> wrote:
> > > > On Mon, Dec 10, 2012 at 5:29 PM, Paul W. Frields <[email protected]>wrote: > >> On Fri, Dec 07, 2012 at 04:02:09PM +0100, Christian Menzel wrote: >> > Hi, >> > >> > while my Thinpad X220 normally shows 50 to 60 degrees Celsius, when >> > running on normal load, it gets hot to 90 to 96 degrees Celsius after >> > resume from suspend, although top does not show any CPU eating >> processes. >> > I think I experience this behavior since switching to kernel 3.6.x. >> > >> > Does this happen on other machines too? Is there a cure for it? >> >> You're probably seeing this bug, where the GPU gets stuck in power-on >> mode: >> >> https://bugzilla.redhat.com/show_bug.cgi?id=866212 >> >> I've found that if you add 'i915.i915_enable_rc6=7' to your boot line, >> it will work around the bug about 60-70% of the time. When it >> doesn't, suspending and resuming again (i.e. closing lid for a few >> seconds and reopening) usually makes the workaround take hold. >> > > Hi Paul, > > yes that sounds exactly like the issue I'm experiencing, thanks for the > workaround, I'll try it out. > > Regards > Chris > Ok, the workaround seems to work, I had to the suspend/resume cycle twice, but it's far better than before. When editing the boot line I noticed it already contained 'i915.i915_enable_rc6=1' but 7 seems to be the perfect value. Thanks a lot Chris
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