cpufreq 调整频率的问题

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bbqwinner
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cpufreq 调整频率的问题

#1

帖子 bbqwinner » 2011-02-05 11:46

我的电脑是dell-inspiron-1520,装的是ubuntu10.10,但是发现cpu自动调整频率工作怎么都不正常,控制管理方式可以,但是最大工作频率不行。即echo ondemand >/sys//sys/devices/system/cpu/cpu0/cpufreq/scaling_governor 可以,但是echo 2101000 >/sys//sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq之后cat 它还是800000,就是说最大频率限制在了800000,所以cpu速度降低到了原来大概三分之一,有没有大师遇到过类似问题啊??
==================================================================
以下是我的cpufreq-info信息:
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 - 2.10 GHz
available frequency steps: 2.10 GHz, 2.10 GHz, 1.60 GHz, 1.20 GHz, 800 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave, performance
current policy: frequency should be within 800 MHz and 800 MHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 800 MHz (asserted by call to hardware).
cpufreq stats: 2.10 GHz:0.00%, 2.10 GHz:0.00%, 1.60 GHz:0.00%, 1.20 GHz:0.00%, 800 MHz:100.00% (1)
analyzing CPU 1:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1
CPUs which need to have their frequency coordinated by software: 1
maximum transition latency: 10.0 us.
hardware limits: 800 MHz - 2.10 GHz
available frequency steps: 2.10 GHz, 2.10 GHz, 1.60 GHz, 1.20 GHz, 800 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave, performance
current policy: frequency should be within 800 MHz and 800 MHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 800 MHz (asserted by call to hardware).
cpufreq stats: 2.10 GHz:0.00%, 2.10 GHz:0.00%, 1.60 GHz:0.00%, 1.20 GHz:0.00%, 800 MHz:100.00% (1)
=====================================================================
补充:
后来我发现当我把电源线拔下来时就可以调整了。
或者当我用电池供电重启后也可以调整。
可能是电池策略的问题。但是详细的过程是怎样的呢?
上次由 bbqwinner 在 2011-02-05 15:20,总共编辑 1 次。
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pocoyo
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Re: cpufreq 调整频率的问题

#2

帖子 pocoyo » 2011-02-05 14:00

gconf-edit里 搜 governor 有一项 应该改改 貌似
bbqwinner
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Re: cpufreq 调整频率的问题

#3

帖子 bbqwinner » 2011-02-05 14:24

pocoyo 写了:gconf-edit里 搜 governor 有一项 应该改改 貌似
我在gconf-editor里搜索一下没有啊。
而且我在不起懂xwindow的情况下去修改,还是不行。。。说明不是gnome的问题啊?
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