I just installed Kubuntu 12.10 and as I knew my wireless driver would not be recognized, I installed it manually through here. I suppose I shall mention that I also had to do this.

The driver worked just fine until I restarted my system. Since then I can't even start over.

My wireless card is realtek 8723

The oly lead I have is this piece of log:

11/14/12 07:35:21 AM    timucin-W150ER  NetworkManager[989] <info> wpa_supplicant started
11/14/12 07:35:21 AM    timucin-W150ER  NetworkManager[989] <info> (wlan0) supports 4 scan SSIDs
11/14/12 07:35:21 AM    timucin-W150ER  NetworkManager[989] <info> (wlan0): supplicant interface state: starting -> ready
11/14/12 07:35:21 AM    timucin-W150ER  NetworkManager[989] <info> (wlan0): device state change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42]
11/14/12 07:35:21 AM    timucin-W150ER  NetworkManager[989] <warn> Trying to remove a non-existant call id.
11/14/12 07:35:21 AM    timucin-W150ER  NetworkManager[989] <info> (wlan0): supplicant interface state: ready -> inactive
11/14/12 07:35:21 AM    timucin-W150ER  NetworkManager[989] <info> (wlan0) supports 4 scan SSIDs

I feel really bad that I have been trying so many things and even while I am trying them I get a problem at every step. I am really frustrated. You can the time in the logs, I didn't get up early. Just needed to share my feelings.

Even the ethernet cable I have use is short for God's sake, I have had to sit at this massively uncomfortable posture for hours.

edit: I discovered something interesting. When I boot my windows I see that my wireless manager says "disconnected" now. However when I start ubuntu after windows and modprobe rtl8723e wireless works just fine. Then again, when I restart ubuntu I am back where I have started. So now I have to start windows, restart my machine and do the modprobe thing to see wireless networks.