linux-kernel - Re: [intel-pstate driver regression] processor frequency very high even if in idle

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Date:	Mon, 4 Apr 2016 16:12:46 +0200
From:	Sedat Dilek <sedat.dilek@...il.com>
To:	Doug Smythies <dsmythies@...us.net>
Cc:	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Linux PM list <linux-pm@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Jörg Otte <jrg.otte@...il.com>
Subject: Re: [intel-pstate driver regression] processor frequency very high
 even if in idle

On Mon, Apr 4, 2016 at 8:14 AM, Doug Smythies <dsmythies@...us.net> wrote:
> On 2016.03.04 22:14 Sedat Dilek wrote:
>> On Sun, Apr 3, 2016 at 8:59 PM, Doug Smythies <dsmythies@...us.net> wrote:
>>> On 2016.04.02 11:21 Sedat Dilek wrote:
>>>> On Sat, Apr 2, 2016 at 7:19 PM, Jörg Otte wrote:
>>>>> 2016-04-02 17:28 GMT+02:00 Srinivas Pandruvada wrote:
>>>>>
>
>> are you involved in the Ubuntu-OS? Developer for Canonical?
>
> I try to help with Ubuntu as a community volunteer.
> I am not a developer with Canonical.
>
> ... [cut]...
>
>>> As far as I know the /etc/init.d/ondemand is working properly. It sets the acpi-cpufreq
>>> driver to use the "ondemand" governor and it sets the intel_pstate driver to use the
>>> "powersave" governor.
>>>
>
>> I haven't looked at this exactly.
>> The ondemand-script is not saying to fall back to "powersave" in case
>> of intel_pstate-driver (here on Ubuntu/precise).
>
> It is likely that newer versions of /etc/init.d/ondemand script
> were never backported to the older 12.04 precise release.
> Why not? Well, because, as far as I know, that release never used the
> intel_pstate driver by default and so never had to fall through
> to the powersave alternative.
>
> Earlier on this thread, Srinivas correctly asked Jörg what distribution
> was being used, so as to hopefully make it easier to reproduce the issue.
> If we want to continue this distro specific conversation, perhaps
> we should move it off-list or to some Ubuntu specific forum.
>

Yes, it is getting off-topic.
Sorry for this.
I know I am here on my own and I think how to fix this.
( Honestly, I forgot about the initial issue. )

- Sedat -