CPU stuck at lowest possible CPU frequency

[csylvain]

@deni

James - did you ever find a solution to this? Appear to be running into the same issue on my Latitude e6400 running 11.4 (32bit)

• Brett

this problem seems to re-occur for many.

i found a solution for my Dell Latitude D600:

leave SpeedStep enabled in the BIOS.

supply these kernel params (openSUSE 12.1 - kernel 3.1.10): processor.max_cstate=1 acpi_pstate_strict=1

with that done, the ondemand governor works again and does not limit the speed range from 600MHz to 600MHz.

[jdmcdaniel3]

@csylvain

this problem seems to re-occur for many.

i found a solution for my Dell Latitude D600:

leave SpeedStep enabled in the BIOS.

supply these kernel params (openSUSE 12.1 - kernel 3.1.10): processor.max_cstate=1 acpi_pstate_strict=1

with that done, the ondemand governor works again and does not limit the speed range from 600MHz to 600MHz.

Thanks for your comments** csylvain** as they could be useful to someone else and the attempt to help is a good one to have. Keep up the good work!

Thank You,

[basse141]

@csylvain

this problem seems to re-occur for many.

i found a solution for my Dell Latitude D600:

leave SpeedStep enabled in the BIOS.

supply these kernel params (openSUSE 12.1 - kernel 3.1.10): processor.max_cstate=1 acpi_pstate_strict=1

with that done, the ondemand governor works again and does not limit the speed range from 600MHz to 600MHz.

I have the same problems with my Lenovo Thinkpad T510I.Core I5 Cpu Opensuse 12.2 The error message :Uhhuh. NMI received for unknown reason 30 on CPU 0. Came after suspend/hibernate
I have disabled the “control_cpu_frequency” setting in /etc/rc.d/laptop-mode/conf.d/cpufreq.conf so far it seems to do the trick. and cpu throttling works. Previous it was stuck on 1.20 Ghz.