Date: Tue, 30 Aug 2005 13:36:59 +0800 From: Erich Dollansky <oceanare@pacific.net.sg> To: Frank Staals <frankstaals@gmx.net> Cc: freebsd-mobile@FreeBSD.org Subject: Re: CPU Speed AMD XP-M 2800+ Message-ID: <4313F07B.4070903@pacific.net.sg> In-Reply-To: <431349DE.9050602@gmx.net> References: <431349DE.9050602@gmx.net>
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Hi, Frank Staals wrote: > Hey, > > I have an Acer Aspire 1356 LCi laptop and I'm running FreeBSD > 5.4-Release. In my laptop I have an AMD XP-M 2800+ which clockspeed > should be around 2100 Mhz according to Wikipedia ( > http://en.wikipedia.org/wiki/List_of_AMD_Athlon_XP_microprocessors#Athlon_XP-M_.22Barton.22_.28Desktop_Replacement.2C_72W_TDP.2C_Socket_A.29 > ) allthough I recently found out is is only running at +/- 800 Mhz : > > frank@Riza$ cat /var/run/dmesg.boot | grep CPU > CPU: Mobile AMD Athlon(tm) XP 2800+ (796.10-MHz 686-class CPU) > cpu0: <ACPI CPU (3 Cx states)> on acpi0 > > Because of this I have problems decoding/playing an AVC ( H264 ) video > file. Is there a way to throttle the CPU speed, since it is probably > always running on low-power mode ? > I do not know how it works with AMD CPUs but I think the concept is the same as for Transmeta CPUs. There is a driver - longrun for Transmeta - which does this switching for you. You should find more in the handbook. Erich
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