我正在尝试安装WIFI驱动程序。
尝试安装时固件杂项非自由包我收到此错误：
ham@ubuntu:~$ sudo apt-get install firmware-misc-nonfree
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package firmware-misc-nonfree is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
更新 ：
（1） 我试过这解决方案，但它对我不起作用。
（2）
当我执行此命令时，lspci -k | egrep -i "Wireless|Network|Ralink|RT3290" -A4
我没有得到任何输出
该命令的输出lsusb -t是：
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
|__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 2: Dev 3, If 0, Class=Hub, Driver=hub/7p, 12M
|__ Port 1: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 1: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M