I had to reinstall Ubuntu 12.04 LTS on my HP Compaq nc8230.
Everything went fine, as before.
I did a restart based on "197 Updates", then while carrying the laptop, I pressed the key labeled
After this the wireless LAN was deactivated and I'm not able to activate it anymore; not with the key and not with the option on the upper right corner of my desktop. Now the sign looks like an empty triangle.
iwconfig tells me that my interface 'eth1' has an wlan extension, which I already knew it had, because I used it before. But I have no clue how to activate it again...
Can anyone suggest a fix?