[Bug 6534] CPU frequency scaling is not working

[Olosta]

Public bug reported:
https://launchpad.net/malone/bugs/6534

Affects: linux-source-2.6.15 (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: New

Description:
At boot time, the GNOME cpu frequency scaling applet says it can't work.

olosta at aman:~$ ls /sys/devices/system/cpu/cpu0/
online
olosta at aman:~$ cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 6
model           : 10
model name      : mobile AMD Athlon(tm) XP-M 2500+
stepping        : 0
cpu MHz         : 803.604
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        : 1607.81
olosta at aman:~$ cat /proc/acpi/processor/CPU0/throttling
<not supported>
olosta at aman:~$ sudo modprobe powernow-k7
Password:
FATAL: Error inserting powernow_k7 (/lib/modules/2.6.15-11-k7/kernel/arch/i386/kernel/cpu/cpufreq/powernow-k7.ko): No such device

It was working very well with breezy.

I found this very interesting thread on the dapper forum but they don't
seem to have submitted the bug here :

http://www.ubuntuforums.org/showthread.php?t=105696

It looks like a kernel recompilation without SMP solves the problem, I
will try this later.