linux-kernel - Re: PROBLEM: system clock slow on Athlon AMD64 since 2.6.21

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Message-ID:  <pan.2007.06.09.19.27.04@free.fr>
Date:	Sat, 9 Jun 2007 19:27:04 +0000 (UTC)
From:	Matthieu CASTET <castet.matthieu@...e.fr>
To:	linux-kernel@...r.kernel.org
Subject:  Re: PROBLEM: system clock slow on Athlon AMD64 since 2.6.21

Hi,

On Sat, 09 Jun 2007 16:53:32 +0200, Mikael Pettersson wrote:

> On Fri, 08 Jun 2007 10:14:03 +0200, Gerard H. Pille wrote:
>> [1.] One line summary of the problem: Since I switched from 2.6.20 to
>> 2.6.21 on my Athlon AMD64 laptop, the system time is slow - about 1' on
>> 15'.
> 
> According to your system description it seems that you have a Targa
> Visionary laptop with a VIA chipset and a Mobile Athlon64. If so, then
> you probably have the same problem I reported some time ago: see
> <http://marc.info/?l=linux-kernel&m=117681226421346&w=2> and the
> followup messages. The conclusion was that the chipset's ACPI PM timer
> slows down when the CPU is in C2.
Isn't possible to chose something other than ACPI PM timer ?


Matthieu

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