I had the same problem. I can’t recall the exact steps, but you must go into Yast, and there must be a button with “network settings?..” … Actually I don’t know which button exactly one, just try some of them out… when you click that a window appears with a question in it written which application should handle network things: there are 2 radiobuttons and you must click onto NetworkManager. After you have done that and confirm the window, all NetworkManager Tools start immediately.
I’m sorry that I can only explain so fuzzy, I have uninstalled it already :s. Hope it helps, though
indeed i used the factory repo’s (Factory distribution - openSUSE) and did a “zypper dup” which of course updated not just networkmanager. But beside of my wireless working again there were no negative effect.
(Because of non-working wireless i did it via wired ethernet.)
I just did a fresh install of 11.3 and have the same problem. However the “switching from ifup” trick didn’t work for me. I lost connectivity after a crash (I wasnt monitoring the computer so I’m not sure what happened, I can tell you the run time was only a few hours out from the fresh install and I had recently updated with update app).