I have got openSUSE 12.1 with KDE 4.7 (I think - the one that comes with 12.1 anyway) and have installed on my son’s laptop, having managed to get it working on my own (same make, very slightly different model).
Whenever I want to access the internet on my son’s PC, I need to plug an ethernet cable in and then watch as the wireless connection then starts to work. I can then unplug and, on first reboot, the wireless connection is there. After that, nothing. A scan does not even reveal the network, although the PC had no problem finding it when the ethernet cable was plugged in.
Has anyone any suggestions? What logs etc can I check for sources of the problem?