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 :)
Power management, mobile and firmware developer on Linux. Security developer at nvidia. Ex-biologist. Content here should not be interpreted as the opinion of my employer. Also on Mastodon and Bluesky.
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Skylake w/ ucode 0x84 + kernel 4.6rc3
Date: 2016-04-14 09:50 pm (UTC)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 :)