Troubleshooting:mythbackend: Problem with capture cards: Card 1failed init
From MythTV Official Wiki
If this sounds like you:
- From the frontend, everything seems ok until I would try to watch live TV (then the frontend claims the inputs are in use, but there are no active recordings!).
or
- When I try to schedule recordings, I can see the program guide but selections don't stick.
You might take a look in /var/log/mythtv/mythbackend.log and see something like this:
Channel(/dev/v4l/video0)::Open(): Can't open video device, error "No such file or directory" mythbackend: Problem with capture cards: Card 1failed init ERROR: no valid capture cards are defined in the database. Perhaps you should read the installation instructions? mythbackend: No capture cards are defined: Please run the setup program.
In my case, the trouble was starting the backend too soon during startup. I moved the startup script later in the boot sequence and it works properly:
> su # cd /etc/rc5.d # mv S86mythbackend S99mythbackend