From: Arjan van de Ven <arjan at linux.intel.com>
To: powertop@lists.01.org
Subject: Re: [Powertop] Package C states over Haswell platform
Date: Tue, 28 Oct 2014 09:45:42 -0700 [thread overview]
Message-ID: <544FC836.6030506@linux.intel.com> (raw)
In-Reply-To: 002401cff2cb$1aeaebc0$50c0c340$@gmail.com
[-- Attachment #1: Type: text/plain, Size: 573 bytes --]
On 10/28/2014 9:20 AM, Rony Ross wrote:
> I'm working on DELL E7440 platform (Haswell based) with dual OS: Windows 8.1 and Ubuntu 14.04.1 (based on 3.13).
> When I use Win 8.1, using BLA I get ~90% PC7 when idle. However, when I use the Ubuntu, using powertop I get only as high as PC3.
> Since it's the same platform, it seems to rule out a HW issue. Any idea what can be the problem? Is Haswell fully supported by powertop?
>
likely some device is not going to a low power state, which then blocks PC7.
Powertop should be able to tell you which device that is
next reply other threads:[~2014-10-28 16:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-28 16:45 Arjan van de Ven [this message]
-- strict thread matches above, loose matches on Subject: below --
2014-10-29 12:23 [Powertop] Package C states over Haswell platform Rony Ross
2014-10-29 3:57 Alexandra Yates
2014-10-29 3:37 Alexandra Yates
2014-10-28 18:04 Kalowsky, Daniel
2014-10-28 16:20 Rony Ross
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