From: Andre Eisenbach <andre@ironcreek.net>
To: linux-kernel@vger.kernel.org
Subject: Athlon Mobile XP CPU speed problem
Date: Fri, 9 Apr 2004 17:23:55 +0000 [thread overview]
Message-ID: <200404091723.55628.andre@ironcreek.net> (raw)
Dear Linux-Kernel developers,
My notebook [1], powered by a AMD Athlon XP2400+ (k7) is slowing down when
running on battery. This happens regardless of whether or not cpu frequency
scaling is enabled or not. /proc/cpuinfo still shows maximum frequency, but
the computer is definitely slowed down considerably.
ACPI cpu info shows "throttling contro: no" and "limit interface: no".
It seems like the slowdown occurs out of control of linux cpu frequency
scaling or ACPI.
What may cause this slow-down?
Is there any driver/kernel option which may let me control this behaviour?
Current kernel version used 2.6.5-mm1 with cpufreq and ACPI compiled in.
Thanks,
André Eisenbach
------
[1] Compaq Presario 2100z
/proc/cpuinfo:
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 10
model name : mobile AMD Athlon(tm) XP2400+
stepping : 0
cpu MHz : 1788.568
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat
pse36 mmx fxsr sse syscall mp mmxext 3dnowext 3dnow
bogomips : 3538.94
/proc/acpi/processor/CPU0/info
processor id: 0
acpi id: 0
bus mastering control: yes
power management: yes
throttling control: no
limit interface: no
next reply other threads:[~2004-04-11 4:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-09 17:23 Andre Eisenbach [this message]
2004-05-06 10:05 ` Athlon Mobile XP CPU speed problem Pavel Machek
2004-05-10 3:26 ` Erik Meitner
2004-05-11 18:54 ` Andre Eisenbach
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