Comment 28 for bug 138465

This is also found on a Dell D800 laptop running Ubuntu Server 9.10.

Frequency is always stuck on the lowest (600 MHz).
The only way to disable it is to boot with acpi=off, but that induces other problems, most notably the 'sensors' command no longer works.

Output of uname -a:
Linux walle 2.6.31-19-generic #56-Ubuntu SMP Thu Jan 28 01:26:53 UTC 2010 i686 GNU/Linux

Output of cpufreq-info:
cpufrequtils 005: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to <email address hidden>, please.
analyzing CPU 0:
  driver: acpi-cpufreq
  CPUs which need to switch frequency at the same time: 0
  hardware limits: 600 MHz - 1.70 GHz
  available frequency steps: 1.70 GHz, 1.40 GHz, 1.20 GHz, 1000 MHz, 800 MHz, 600 MHz
  available cpufreq governors: conservative, ondemand, userspace, powersave, performance
  current policy: frequency should be within 600 MHz and 600 MHz.
                  The governor "userspace" may decide which speed to use
                  within this range.
  current CPU frequency is 600 MHz (asserted by call to hardware).
  cpufreq stats: 1.70 GHz:0.00%, 1.40 GHz:0.00%, 1.20 GHz:0.00%, 1000 MHz:0.00%, 800 MHz:0.00%, 600 MHz:0.00% (1)