I've googled for anyone reporting a similar problem to mine, but found nothing so far. That usually means I did something really stupid. Seems I know just enough about Linux to be dangerous. In any case, I recently upgraded from Mint KDE 13, and since my Home is on its own partition, I've kept all my settings and data. No idea if that's part of the problem or not. Anyway, whenever I try to reboot or shutdown from the KDE GUI, it drops me to the plain vanilla command line login prompt. Now if I go ahead and login then type in the command to shutdown or reboot, it works normally. But I shouldn't have to go through all that. What can I do to get the old behavior back? Everything else seems to be working like a champ.
I'm running nVidia driver 304.116 on a GT-630, if that matters. I've seen some threads about NVidia problems in Mint 16, but none of those symptoms seem relevent to what I'm experiencing. I suspect something about MDM may be the culpret, as that's a new part of my startup process, but don't know enough about it to know where to start looking.
Thanks for your help.