I have 2 DVB-C cards in my system, a TT-1500C budget card and a TT-2300C-FF card and run vdr-1.5.15.  The intention was with 2 cards there should always be a DVB resource available to watch/record channels on different transponders.
 
Tonight I had 2 recording events both start at 20:30, on the same transponder.  For some reason, each recording event started on a different card - so all my DVB resources were tied up!!
ONE;T:618000:C0M64:C:6900:5011:5012=eng:5014:606:501:182:5:0
TV2;T:618000:C0M64:C:6900:5021:5022=eng:5024:606:502:182:5:0
Any ideas why this happenned, and how to avoid this happenning again?  Can I make one card preferred as the recording card? 
 
 
Thanks
 
Simon