dothan B0 speedstep-centrino driver

Hi,

I recently bought an Acer Travelmate 6000 series laptop with intel 855 chipset and centrino 1.6 processor (dothan B0). Kernel 2.6.9 speedstep-centrino won't recognise the proc with or without ..._CENTRINO_ACPI switched on. I tried 2.6.10rc2 as well, without success.

ACPI P-states driver works flawless (so no complaint about the usability of speedstep from that point of view).
The reason I write is that I'd like to be able to use the centrino specific driver for it's alleged switching speed improvement and help debugging/updating the driver for this CPU/Laptop/BIOS combination.

cat /proc/cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 13
model name : Intel(R) Pentium(R) M processor 1.60GHz
stepping : 6
cpu MHz : 598.069
cache size : 2048 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr mce cx8 sep mtrr pge mca cmov pat
clflush dts acpi mmx fxsr sse sse2 ss tm pbe esttm2
bogomips : 1182.72

dmesg ACPI P-States part of the the bootprocess:
...

cpufreq: CPU0 - ACPI performance management activated.
cpufreq: *P0: 1600 MHz, 24000 mW, 10 uS
cpufreq:  P1: 1400 MHz, 20000 mW, 10 uS
cpufreq:  P2: 1200 MHz, 18000 mW, 10 uS
cpufreq:  P3: 1000 MHz, 16000 mW, 10 uS
cpufreq:  P4: 600 MHz, 12000 mW, 10 uS
ACPI: (supports S0 S3 S4 S5)

...

If there's anything I can do to help.

Regards,
Martin van Es

If 'but' was any useful, it would have a logical operator.

Hi,

Could you boot 2.6.10-rc2 with "cpufreq.debug=2" appended on the boot command line, and send me (no need to CC the list) the complete dmesg output, please?

Thanks,
Dominik