I'm new to LinuxMCE. I decided to try it out at the start of september, and so far I'm impressed.
Since the upgrade from 4 september though, I could no longer watch live TV.
I was planning on asking for help, but as I was writing this post and collecting and organizing the info I had so far, I thought of a few things I could still try and I managed to fix it by myself.
So, this post is just in case somebody else may have the same problems.
My setup: I have a core with a PVR-500 capture card in a storage closet, and a Zotac Ion board as a media director in my living room.
The problem I had: When I went to Media-TV the mythtv frontend is started, but it stays black for a while. Eventually linuxMCE gaves me the message that "MythTV is having problems. Reset the backend?", but neither Yes nor No seemed to solve anything. Also, playing the recorded programs from the Media Library - Watch Recordings menu in MythTV did not function, if I selected one the screen briefly turns black and I return to the selection menu.
The solution is used was this: on the media director I started the mythtvfrontend (said no to the question of whether to reset the backend) and went to:
"Utilities / Setup" - "Setup" - "TV Settings" - "Playback" and enabled "Always stream recordings from the backend".
I stopped the front end and start it again, and everything worked again.