Does hvr-4000 tune for you to dvb-s channels if you do not apply the h264 patch? That's the case for me. I send previously an email from similar experiences to
Unfortunately I can't tune either without the h264 patch.
Hmm, the differences in my and your setup are 1) I have also hvr-1300 in my system (for dvb-t) 2) I modified the vdr sources instead of modifying the driver for informing the system from the S2 capabilities (klaus explained also that method in his 1.7.2 announcements). I can re-test this in another way once the 2G_CAP patch is applied to v4l-dvb repository.
Mika