[mythtv] HD channels won't tune with patch #5882

[joep admiraal]

hello all,

After some time I finally got a new mythtv test box to play with.
I installed the latest v4l-dvb drivers and followed the instructions from 
ticket 5882.
Mythtv-trunk+s2api.alan.r2.patch+changeset_r19094.diff+ticket 5703

I am able to watch the astra hd demo channel from astra 19 with szap2+mplayer.
Mythbackend seems to use the correct tuning parameters but does not tune 
successfully.
It repeats this message endlessly:
SM(/dev/dvb/adapter1/frontend0)::AddFlags: Seen() Match() Wait(Sig,) 

Does anyone have a clue about where to look for the solution?

Thanks in advance,
Joep Admiraal