Ubuntu
linux package

  1. Bug #818830
  2. Comment #66

Comment 66 for bug 818830

Revision history for this message
Leann Ogasawara (leannogasawara) wrote :

Hi Everyone,

I see some of you have found the RC6 tunables test kernel I built. As a follow on to that I've been in touch with upstream and have pulled in a proposed patch which disables RC6p (deep RC6) for Sandy Bridge. Upstream claims that RC6p is what was responsible for the reports of hangs/graphics corruption issues when RC6 was enabled. I've then added a follow on patch to then enable plain RC6 by default for Sandy Bridge users. Both of these patches are available in the latest 3.2.0-17.26 kernel.

In order to help justify keeping these patches applied and providing Sandy Bridge users improved power savings by default (ie users will no longer need to pass in i915.i915_enable_rc6=1), I'd really appreciate if you could all review my call for testing which I posted to both the Ubuntu kernel-team and ubuntu-devel mailing lists:

https://lists.ubuntu.com/archives/kernel-team/2012-February/019029.html

If you could please test and provide your feedback on the PowerManagementRC6 wiki, I would greatly appreciate it.

https://wiki.ubuntu.com/Kernel/PowerManagementRC6

Thanks in advance.