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其他
7z
setpci - Linux命令大全 - 笔下光年
网站首页
setpci
查询和配置PCI设备的使用工具 ## 补充说明 **setpci命令** 是一个查询和配置PCI设备的使用工具。 ### 语法 ```shell setpci(选项)(参数) ``` ### 选项 ```shell -v:显示指令执行的细节信息; -f:当没有任何操作需要完成时,不显示任何信息; -D:测试模式,并不真正将配置信息写入寄存器; -d:仅显示给定厂商和设备的信息; -s:仅显示指定总线、插槽上的设备或设备上的功能块信息。 ``` ### 参数 * PCI设备:指定要配置的PCI设备; * 操作:指定要完成的配置操作。 ### 实例 Linux下调节笔记本屏幕亮度方法: 首先进入终端输入lspci命令,列出各种设备的地址: ```shell lspci 00:00.0 host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03) 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03) 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 02) ...... ``` 发现00:02.0是VGA设备,于是我们修改它的属性: ```shell sudo setpci -s 00:02.0 F4.B=FF ``` 解释一下: * **setpci** 是修改设备属性的命令。 * **-s** 表示接下来输入的是设备的地址。 * **00:02.0** VGA设备地址(<总线>:<接口>.<功能>)。 * **F4** 要修改的属性的地址,这里应该表示“亮度”。 * **.B** 修改的长度(B应该是字节(Byte),还有w(应该是Word,两个字节)、L(应该是Long,4个字节))。 * **=FF** 要修改的值(可以改)。 我这里00是最暗,FF是最亮,不同的电脑可能不一样。比如说我嫌FF太闪眼了,我就可以: ```shell sudo setpci -s 00:02.0 F4.B=CC ```
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