Skylake w/ ucode 0x84 + kernel 4.6rc3

Date: 2016-04-14 09:50 pm (UTC)
From: (Anonymous)
I own a MSI GE62 6QD with a 6700HQ and had to totally disable CSTATES in bios to boot (even intel_idle.max_cstate=x).

Upgraded bios with ucode 0x84, kernel 4.4.6 couldn't boot at all.
Kernel 4.6.0rc3 boots and powertop tells me my system stays most of it's time in pc3 and cc7.

Package | Core | CPU 0 CPU 4
| | C0 active 2,2% 0,1%
| | POLL 0,0% 0,0 ms 0,0% 0,0 ms
| | C1E-SKL 0,2% 0,2 ms 0,0% 0,0 ms
C2 (pc2) 9,6% | |
C3 (pc3) 71,6% | C3 (cc3) 0,4% | C3-SKL 0,7% 0,6 ms 0,0% 0,0 ms
C6 (pc6) 0,0% | C6 (cc6) 8,6% | C6-SKL 9,1% 1,4 ms 0,0% 0,0 ms
C7 (pc7) 0,0% | C7 (cc7) 84,1% | C7s-SKL 74,9% 1,8 ms 3,5% 6,3 ms
C8 (pc8) 0,0% | |
C9 (pc9) 0,0% | |
C10 (pc10) 0,0% | | C10-SKL 10,5% 2,6 ms 94,9% 35,7 ms

Anyone knows how to go deeper than pc3 or is this a new artificial kernel limitation for skylake so linux can boot ?
Thanks :)
From:
Anonymous
OpenID
Identity URL: 
User
Account name:
Password:
If you don't have an account you can create one now.
Subject:
HTML doesn't work in the subject.

Message:

If you are unable to use this captcha for any reason, please contact us by email at support@dreamwidth.org


 
Notice: This account is set to log the IP addresses of everyone who comments.
Links will be displayed as unclickable URLs to help prevent spam.

Profile

Matthew Garrett

About Matthew

Power management, mobile and firmware developer on Linux. Security developer at Google. Member of the Free Software Foundation board of directors. Ex-biologist. @mjg59 on Twitter. Content here should not be interpreted as the opinion of my employer.

Expand Cut Tags

No cut tags