cpu被降频了

poorbeer

我刚装上mandriva2010spring
现在玩个什么游戏都卡的很！
用cpufreq-info 显示  cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpufreq@vger.kernel.org, please. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us.

hardware limits: 800 MHz - 2.00 GHz

available frequency steps: 2.00 GHz, 1.60 GHz, 1.33 GHz, 1.07 GHz, 800 MHz
available cpufreq governors: ondemand, conservative, powersave, userspace, performance

current policy: frequency should be within 800 MHz and 800 MHz.

The governor "userspace" may decide which speed to use within this range. current CPU frequency is 800 MHz (asserted by call to hardware). 2GHz 的怎么现在只能在800Mhz～800Mhz之间运行？！！ 要怎么改回来？ 设置上限没有反应！