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#601 2013-11-19 12:33:47

eazy
Member
From: London, UK
Registered: 2008-01-20
Posts: 97
Website

Re: Kernel 3.6.2 Power Regressions (Sandy Bridge)

@wlmeng11: can you check with no browser open? and with no external displays? after a fresh boot possibly.

Also, what DE are you using? My tests are on Cinnamon 2.0.12


no masters to rule us, no gods to fool us

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#602 2013-12-03 23:19:20

jkelley05
Member
Registered: 2013-12-03
Posts: 1

Re: Kernel 3.6.2 Power Regressions (Sandy Bridge)

I am also not having much luck with linux-3.12.1-1 or linux-3.12.1-1 on my thinkpad X220 with an i7 (SB).  Downgrading my kernel to linux-3.11.4-1 returned my power usage to sane levels again and allowed my gpu to idle some.

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#603 2013-12-12 13:13:57

eazy
Member
From: London, UK
Registered: 2008-01-20
Posts: 97
Website

Re: Kernel 3.6.2 Power Regressions (Sandy Bridge)

@jkelley05: yeah, I rolled back to 3.11.4 too because 3.12 seems to be power hungrier than that version. Haven't tested the last 3.12.x releases though.


no masters to rule us, no gods to fool us

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#604 2013-12-15 12:50:00

grine
Member
Registered: 2010-02-09
Posts: 38

Re: Kernel 3.6.2 Power Regressions (Sandy Bridge)

I'm also seeing 100% Powered ON bhaviour on later kernels. This happens when playing videos in mpv/mplayer. Oddly enough this does not appear when using vlc. It also happens when using flash in firefox.

I reverted to 3.11.4 and it's back to normal.

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#605 2014-01-21 08:35:24

the_joker
Member
Registered: 2012-10-12
Posts: 8

Re: Kernel 3.6.2 Power Regressions (Sandy Bridge)

Hi All,

seems it has bee quiet on this specif post. But since I experience the same issues as the previous poster. I like to re-request, what the current status for this issue is. Specifically I'm interested if its considered closed. But other people that have been watching this for the last 4 kernel releases

I tried every Kernel in the 3.12.* line and my GPU is from the beginning stuck at 100%, no kernel parameter for the i915 modules seems to change that behavior, Im still running at 3.11.6 and everything is as expected. (50 degress) nicely going into Power and RC6

Could the mods please consider this as "not bumping" ...

thanks

Pete

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#606 2014-01-21 12:56:52

stupidus
Member
Registered: 2012-02-27
Posts: 69

Re: Kernel 3.6.2 Power Regressions (Sandy Bridge)

I am running linux-3.12.7-2 on my T420 and the GPU goes 99% into RC6pp. I am only using the following parameters concerning the i915 modules:

i915.i915_enable_rc6=7 
i915.lvds_downclock=1

CPU also goes into idle 99% of the time.  Temperatures and power consumption are completely ok. So for me this bug has been fixed for quite some time now.

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#607 2014-01-21 14:46:19

trsk
Member
Registered: 2012-10-14
Posts: 38

Re: Kernel 3.6.2 Power Regressions (Sandy Bridge)

I'm using the X220 with an SB i7 and the problem has appeared fixed for quite some time now, too.

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#608 2014-01-22 15:24:08

replax
Member
Registered: 2011-02-12
Posts: 87

Re: Kernel 3.6.2 Power Regressions (Sandy Bridge)

Hi! I am using a X220 i7, too and the problem seems to have returned.
While my CPU is perfectly fine now, no 100% or anything, my GPU is stuck at somewhere between 100% and 80%. Doesn't go down from there.. Even if I am not doing anything at all.
uname -a
Linux mybox 3.12.8-1-ARCH #1 SMP PREEMPT Thu Jan 16 09:16:34 CET 2014 x86_64 GNU/Linux

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#609 2014-02-09 17:31:59

Lassulus
Member
Registered: 2010-11-07
Posts: 7

Re: Kernel 3.6.2 Power Regressions (Sandy Bridge)

hey,
I am using the X220 with i7, with kernel 3.12.9-2 i had 100% GPU usage all the time.
I am now using linux-lts version 3.10.29-1-lts which seems to have fixed the problem.

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#610 2014-02-09 20:57:11

The Compiler
Member
From: Winterthur, Switzerland
Registered: 2011-05-01
Posts: 123
Website

Re: Kernel 3.6.2 Power Regressions (Sandy Bridge)

Huh, that's odd. x220t with i7-2620M on 3.12.9-2 as well, without any issues.


Currently running a crowdfunding campaign to work on qutebrowser full-time for a few weeks:

http://igg.me/at/qutebrowser

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