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#1 2016-07-30 06:22:40

e.sovetkin
Member
From: Aachen
Registered: 2013-04-05
Posts: 28

[SOLVED] a problem after upgrading cpupower

I have a laptop with processor Intel-M (M-5Y71) and I am used to run it always on the lowest frequency.
In order to archieve this behaviour I disable intel_pstate on kernel line and set frequency with cpupower.
So far, everything worked as intended unitl I upgraded cpupower to 4.7.1.

After the upgrade I still can set the frequency, but it no longer holds the frequency constant (and behaves as if with a intel_pstate driver on).

My question is. Is this a regression of cpupower? After downgrading to the previous version I have achieved the inteded behaviour.

If this is a bug, how should it be reported?

Last edited by e.sovetkin (2016-08-19 07:43:19)

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#2 2016-07-30 13:03:45

monotykamary
Member
Registered: 2016-07-30
Posts: 2

Re: [SOLVED] a problem after upgrading cpupower

I have a similar issue when changing governor policies:

sudo cpupower frequency-set -g performance

This no longer sets the the current governor policy for all CPU's and shows no output in the terminal. My laptop uses powersave by default and it remains the current policy.

Last edited by monotykamary (2016-07-31 02:46:36)

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#3 2016-07-31 01:03:00

dishaze
Member
From: Quebec
Registered: 2014-02-01
Posts: 6

Re: [SOLVED] a problem after upgrading cpupower

Same over here, downgraded cpupower (4.7-1 -> 4.6-4) to fix for now...

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#4 2016-07-31 09:40:46

e.sovetkin
Member
From: Aachen
Registered: 2013-04-05
Posts: 28

Re: [SOLVED] a problem after upgrading cpupower

I noticed also that there no output is given with 4.7-1, normally cpupower notifies if it sets the frequency succefully.

I have submitted a bug report

https://bugs.archlinux.org/task/50209

so, those who have a problem are welcomed to add their details and vote.

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#5 2016-08-05 03:49:30

hpstg
Member
Registered: 2007-06-09
Posts: 46

Re: [SOLVED] a problem after upgrading cpupower

Same here. Can't set governor, performance bias gets set normally.

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#6 2016-08-05 16:34:07

Chryslerfc
Member
From: Navarra , Spain
Registered: 2014-05-30
Posts: 8
Website

Re: [SOLVED] a problem after upgrading cpupower

Hi:

Try

root only

 # echo "conservative" >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor 

Change "conservative"  by your favorite governor

Verify:

 # cpupower frecquency-info 

Try...try


La verdad está dormida en la mente de cada Hombre

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#7 2016-08-05 17:26:00

hpstg
Member
Registered: 2007-06-09
Posts: 46

Re: [SOLVED] a problem after upgrading cpupower

Chryslerfc wrote:

Hi:

Try

root only

 # echo "conservative" >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor 

Change "conservative"  by your favorite governor

Verify:

 # cpupower frecquency-info 

Try...try

Per the wiki, that works of course. But cpupower no longer does. It detects the governor correctly when it is changed that way, the problem is that it's not changing it.

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#8 2016-08-12 17:35:50

rocktone
Member
From: Central Florida, USA
Registered: 2015-01-03
Posts: 17

Re: [SOLVED] a problem after upgrading cpupower

This is definitely a regression that is not specific to one architecture. Hopefully the authors of cpupower can fix it.

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#9 2016-08-13 09:57:28

koassim
Member
Registered: 2015-02-22
Posts: 7

Re: [SOLVED] a problem after upgrading cpupower

Same here. Cpupower is unable to change anything (governor or frequency). Downgrading to version 4.6-4 fixes it for now.

EDIT
According to the upstream bug report there should be a fix in the upcoming version (4.8).

Last edited by koassim (2016-08-13 10:04:19)

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