First thing to do is to see what wireless card you are using:
$ lspci | grep -i network
Let’s see what ipw-like modules/drivers are currently running/loaded:
$ modprobe -l | grep ipw/lib/modules/2.6.20-17-generic/kernel/ubuntu/wireless/ipw2100/ipw2100.ko/lib/modules/2.6.20-17-generic/kernel/drivers/usb/serial/ipw.ko/lib/modules/2.6.20-17-generic/kernel/drivers/net/wireless/ipw2100.ko/lib/modules/2.6.20-17-generic/kernel/drivers/net/wireless/ipw2100.ko
Here it is “ipw2100″. Let’s kill it (-r stands for “remove”):
$ sudo modprobe -r ipw2100
Let’s start it back up:
$ sudo modprobe ipw2100
Checking connectivity:
I issued the following commands:
sudo ifdown wlan0
sudo rmmod ipw2100
Waited a few seconds … and then:
sudo modprobe rtl8187
sudo ifup wlan0
Wireless networking then started working without the need of a reboot.
I had the same problem, and i should reboot the system to get wireless to work.
But now every time wireless stops working, I just enter these commands:
rmmod iwlagn
rmmod iwlcore
modprobe iwlcore
modprobe iwlagn
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