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From: Dominik Brodowski <linux@dominikbrodowski.de>
To: Cyril Wattebled <neurowork@free.fr>
Cc: cpufreq@www.linux.org.uk
Subject: Re: Centrino question
Date: Sat, 8 May 2004 19:54:41 +0200	[thread overview]
Message-ID: <20040508175441.GA7624@dominikbrodowski.de> (raw)
In-Reply-To: <20040508133527.69aae7b8.neurowork@free.fr>


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On Sat, May 08, 2004 at 01:35:27PM +0000, Cyril Wattebled wrote:
> Hi there,
> 
> I'm wondering if all Pentium M processor support C1 C2 and C3 ?
> Because I have a Sony Vaio Z1 with a Pentium M 1.7ghz and it only supports C1
> and C2. I have a friend who has a Toshiba Tecra with a Pentium M 1.4ghz and it
> supports C3.
> So that's it, if any of you have time to answer =]

AFAIK, all Pentium M _processors_ do support C1, C2, C3 and C4; it may be a
chipset or platform-specific problem so that C3 is disabled. FYI, the
ipw2100 driver sometimes fails if the CPU is in C3; maybe a related/similar
problem has caused some vendor to disable C3. Also, C4 (and possibly C3 in
your case) can also be specified in a 2.0 extension to the ACPI tables which
is not yet used by the acpi processor driver (drivers/acpi/processor.c) --
but there is a patch on bugzilla.kernel.org to fix that already.

Please direct future mails about Cx states to the acpi development list, as
it has nothing to do with CPU frequency scaling.

	Dominik

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  reply	other threads:[~2004-05-08 17:54 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-05-08 13:35 Centrino question Cyril Wattebled
2004-05-08 17:54 ` Dominik Brodowski [this message]
  -- strict thread matches above, loose matches on Subject: below --
2004-05-09 18:25 Cyril Wattebled
     [not found] ` <20040509182524.03a9de0d.neurowork-GANU6spQydw@public.gmane.org>
2004-05-09 17:51   ` Dino Klein
     [not found]     ` <409E6F91.8090506-zY4eFNvK5D9If6P1QZMOBw@public.gmane.org>
2004-05-10  0:28       ` Cyril Wattebled
     [not found]         ` <20040510002814.67f2022a.neurowork-GANU6spQydw@public.gmane.org>
2004-05-21 16:37           ` Bruno Ducrot
2004-05-10  2:27 Yu, Luming
2004-05-21 11:42 Yu, Luming
     [not found] ` <3ACA40606221794F80A5670F0AF15F84046AA243-SRlDPOYGfgogGBtAFL8yw7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2004-05-22  0:56   ` Cyril Wattebled
     [not found]     ` <20040522005658.640e1d91.neurowork-GANU6spQydw@public.gmane.org>
2004-05-23  3:24       ` Len Brown
     [not found]         ` <1085282649.12352.739.camel-D2Zvc0uNKG8@public.gmane.org>
2004-05-23 13:21           ` Cyril Wattebled
     [not found]             ` <20040523132122.6ba363b4.neurowork-GANU6spQydw@public.gmane.org>
2004-05-24 16:11               ` Ow Mun Heng
     [not found]                 ` <1085415078.12941.2.camel-C9mHTC703ZUb5wn6fCfWY+TW4wlIGRCZ@public.gmane.org>
2004-05-25  7:27                   ` Stefan Seyfried
     [not found] <3ACA40606221794F80A5670F0AF15F8404622C57@PDSMSX403.ccr.corp.intel.com>
     [not found] ` <20040520015748.776d5b84.neurowork@free.fr>
     [not found]   ` <1085111429.12352.563.camel@dhcppc4>
     [not found]     ` <1085111429.12352.563.camel-D2Zvc0uNKG8@public.gmane.org>
2004-05-21 12:56       ` Cyril Wattebled
     [not found]         ` <20040521125637.33f69fc6.neurowork-GANU6spQydw@public.gmane.org>
2004-05-21 11:52           ` Karol Kozimor
     [not found]             ` <20040521115207.GA12775-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org>
2004-05-21 17:38               ` Ow Mun Heng
     [not found]                 ` <1085161136.9856.5.camel-C9mHTC703ZUb5wn6fCfWY+TW4wlIGRCZ@public.gmane.org>
2004-05-21 18:48                   ` Martin Hermanowski
     [not found]                     ` <20040521184830.GG31690-lb+GC1uVkU0@public.gmane.org>
2004-05-21 19:27                       ` Ow Mun Heng
2004-05-23  3:20                       ` Len Brown
2004-05-25 23:28                   ` Alexander Hoogerhuis
     [not found]                     ` <1085527691.9167.39.camel-x1HDAq6LUf79HyLP1LL8ZA@public.gmane.org>
2004-05-25 23:56                       ` Karol Kozimor
     [not found]                         ` <20040525235610.GA21791-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org>
2004-05-27 20:52                           ` Pavel Machek
2004-05-27  6:22                       ` Len Brown
     [not found]                         ` <1085638963.17693.71.camel-D2Zvc0uNKG8@public.gmane.org>
2004-05-28 20:27                           ` Ow Mun Heng
2004-05-21 18:08 Nakajima, Jun
     [not found] ` <7F740D512C7C1046AB53446D372001730177CE7A-exJ48ZlmiLpcIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2004-05-21 18:17   ` Ow Mun Heng
     [not found]     ` <1085163473.9856.23.camel-C9mHTC703ZUb5wn6fCfWY+TW4wlIGRCZ@public.gmane.org>
2004-05-21 18:31       ` Bruno Ducrot
     [not found]         ` <20040521183113.GQ29214-kk6yZipjEM5g9hUCZPvPmw@public.gmane.org>
2004-05-21 18:36           ` Ow Mun Heng
     [not found]             ` <1085164585.9856.31.camel-C9mHTC703ZUb5wn6fCfWY+TW4wlIGRCZ@public.gmane.org>
2004-05-21 18:47               ` Bruno Ducrot
     [not found]                 ` <20040521184703.GR29214-kk6yZipjEM5g9hUCZPvPmw@public.gmane.org>
2004-05-21 19:05                   ` Ow Mun Heng
2004-05-21 21:27 Nakajima, Jun
     [not found] ` <7F740D512C7C1046AB53446D372001730177CF4E-exJ48ZlmiLpcIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2004-05-21 23:45   ` Ow Mun Heng
     [not found]     ` <1085183136.9856.253.camel-C9mHTC703ZUb5wn6fCfWY+TW4wlIGRCZ@public.gmane.org>
2004-05-23  3:22       ` Len Brown
     [not found]         ` <1085282554.12359.736.camel-D2Zvc0uNKG8@public.gmane.org>
2004-05-24 16:28           ` Ow Mun Heng
2004-05-23 20:33 Dino Klein
     [not found] ` <BAY16-F76SQV6cerTPS0003d004-PkbjNfxxIARBDgjK7y7TUQ@public.gmane.org>
2004-05-23 21:54   ` Martin Hermanowski
     [not found]     ` <20040523215431.GD6330-lb+GC1uVkU0@public.gmane.org>
2004-05-23 22:25       ` Karol Kozimor
2004-05-24 16:46   ` Ow Mun Heng
     [not found]     ` <1085417218.12941.14.camel-C9mHTC703ZUb5wn6fCfWY+TW4wlIGRCZ@public.gmane.org>
2004-05-24 16:53       ` Arjen Verweij
     [not found]         ` <Pine.GHP.4.44.0405241853400.27939-100000-1JbLm1bU5j7YjFCvLzxXUyvJykC1LJ6w@public.gmane.org>
2004-05-24 17:08           ` Ow Mun Heng
2004-05-24 17:03       ` David Eriksson
2004-05-24 14:48 Yu, Luming
2004-05-24 17:36 Dino Klein

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