Long time ubuntu user here. Anyway i recently upgraded to Ubuntu 12.04 with my Lenovo x61s laptop. Immediately after starting up, i noticed that the wireless connection drops and forgets the wireless keys about every 10 to 15 seconds. So every time i finish entering the wireless password, i can wait 10 seconds, and I get booted from the network and am prompted again for the pass phrase. Obviously there is a problem here, and I have noticed a lot of other questions around the web about this. The only real answer I saw was doing:
But when I do that I get this error:
sudo iwconfig wlan0 powere off
Error for wireless request "Set Power Management" (8B2C) : SET failed on device wlan0 ; operation not supported.
And i know my wireless card is using wlan0 for the connection.
I also check in the "Additional Drivers" and nothing shows up.
Please any help is greatly appreciated!