We're waiting with 'bated breath (well I am anyway) to hear how this comes out.
I've no experience of Fedora, so am unable to offer help, but I did wonder why you were going for F12 when F13 is available?
Fedora help might be a good place to try if you haven't explored that avenue already.
I've an old laptop on which I was using Mint XFCE, but I'm currently trying Peppermint which is doing well for a machine with such limited resources. I know there are other Linux users on here, but cannot remember who (Geoff the Duck may, I think, be one) It's good to hear how folks are getting on.