I just noticed my laptop stared working considerably slower. I am using an updated 13.04, though the issue did not start right after the upgrade. After tracking down the issue I noticed that both processors operate at 800 MHz instead of the maximum 1800 MHz. Irrespective of the load, the frequency remains 800. Here are some stats:
$ cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to [email protected], please.
analyzing CPU 0:
driver: powernow-k8
CPUs which run at the same hardware frequency: 0 1
CPUs which need to have their frequency coordinated by software: 0 1
maximum transition latency: 109 us.
hardware limits: 800 MHz - 1.80 GHz
available frequency steps: 1.80 GHz, 1.60 GHz, 800 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave, performance
current policy: frequency should be within 800 MHz and 800 MHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 800 MHz.
cpufreq stats: 1.80 GHz:0.00%, 1.60 GHz:0.00%, 800 MHz:100.00%
analyzing CPU 1:
driver: powernow-k8
CPUs which run at the same hardware frequency: 0 1
CPUs which need to have their frequency coordinated by software: 0 1
maximum transition latency: 109 us.
hardware limits: 800 MHz - 1.80 GHz
available frequency steps: 1.80 GHz, 1.60 GHz, 800 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave, performance
current policy: frequency should be within 800 MHz and 800 MHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 800 MHz.
cpufreq stats: 1.80 GHz:0.00%, 1.60 GHz:0.00%, 800 MHz:100.00%
Note the "current policy" says the frequency is between 800 and 800 irrespective of the hardware limits. The original governor was "ondemand", so I changed it to "performance" in order to see if that makes a difference which it didn't. No amount of invoking cpufreq-set or cpufreq-selector changes the frequency.
Looking around, I noticed several people reported similar issues in the past though no favorable answer exists. Any help would be greatly appreciated.