問題
筆記本電腦安裝了Debian11，只有以太網(wǎng)卡可以正常工作，Debian系統(tǒng)找不到WIFI網(wǎng)絡，原因是未加載無線網(wǎng)卡硬件驅(qū)動
Debian 安裝non-free設備源的方法
在Debian系統(tǒng)上安裝第三方組件需要開啟non-free模式
$ vim /etc/apt/sources.list
添加關鍵詞non-free在main后面，示例如下
deb http://deb.debian.org/debian bullseye main contrib non-free
deb-src http://deb.debian.org/debian bullseye main contrib non-free
deb http://deb.debian.org/debian-security/ bullseye-security main contrib non-free
deb-src http://deb.debian.org/debian-security/ bullseye-security main contrib non-free
deb http://deb.debian.org/debian bullseye-updates main contrib non-free
deb-src http://deb.debian.org/debian bullseye-updates main contrib non-free
獲取WIFI設備的型號
通過查詢PCI號指令查詢WIFI，如下顯示了無線網(wǎng)卡的型號
$ lspci -nn
...
03:00.0 Network controller [0280]: Intel Corporation Centrino Wireless-N 2200 [8086:0891] (rev c4)
安裝英特爾無線設備驅(qū)動
- 安裝英特爾固件驅(qū)動
$ apt update && apt install firmware-iwlwifi
- 重新加載 iwlwifi 模塊
$ modprobe -r iwlwifi ; modprobe iwlwifi
以上指令需要在root賬號下運行
- 正常配置WIFI網(wǎng)絡
附錄
Intel Wireless WiFi Link, Wireless-N, Advanced-N, Ultimate-N devices
