I have a problem with my wifi internet connection that is secured by WPA. I have moved to a new location. I had set up a working internect connection but lost the connection after about an hour and this has happened more than once. I cannot simply reboot and run the same commands again as it does not work. The last thing that worked was setting up a minimal configuration file and then start it:
wpa_passphrase MYSSID passphrase > /etc/wpa_supplicant/example.conf wpa_supplicant -B -i interface -c /etc/wpa_supplicant/example.conf dhcpcd interface
as it is discribed in the wiki. At first it works but then I got a sudden disconnect and since then I just cannot reconnect even after several reboots. I have tried wifi-menu and netctl as well. I do not get any error messages and after running dhcpcd I have got a ordinary IP, the gatway and DNS are similar to the output on other machines that have a conenction. My windows phone and Win7 has no conenction problems. And before that I never had any problems with that. The only thing is that there now is no IPv6 Routers available.
Edit: lspci gives me:
Network controller: Intel Corporation Centrino Wirelss-N 105 (rev c4)
lsmod gives me:
Module Used Used by iwlwifi 1 iwldvm cfg80211 3 iwlwifi, mac80211, iwldum
If I change my mac address I get another IP. I cannot ping anything and and cannot get pinged by others. The only thing I can do is ping myself. :D
Any help is appreciated.