[linux-dvb] KNC-1 DVB-C with CI and CAM, should it work?

Peter Schram mail at peterschram.nl
Wed Jun 21 20:12:41 CEST 2006


I have the following pieces of DVB-hardware:

KNC1 DVB-C pci card
KNC1 Cineview CI-adapter 
Alphacrypt CAM

This combo should allow me to watch dutch cable digital tv. However I
don't seem to get things working.

I have succesfully installed the drivers and all things get recognized
ok. I'm trying new drivers from linuxtv repository v4l-dvb-e0deca5f15a1

The log shows this:

Linux video capture interface: v2.00
saa7146: register extension 'budget_av'.
ACPI: PCI Interrupt Link [APC4] enabled at IRQ 19
ACPI: PCI Interrupt 0000:01:07.0[A] -> Link [APC4] -> GSI 19 (level,
high) -> IRQ 19
saa7146: found saa7146 @ mem fa1ae000 (revision 1, irq 19)
saa7146 (0): dma buffer size 192512
DVB: registering new adapter (KNC1 DVB-C).
adapter failed MAC signature check
encoded MAC from EEPROM was
KNC1-0: MAC addr = 00:09:d6:6d:50:39
DVB: registering frontend 0 (Philips TDA10021 DVB-C)...
budget-av: ci interface initialised.
budget-av: cam inserted A
dvb_ca adapter 0: DVB CAM detected and initialised successfully

I have succesfully scanned for channels using dvbscan (had to leave out
the cam for this, otherwise it wouldn't work) and with czap I can tune
to a channel. Entry for channel I use for testing is:


Tuning to a channel gives the following result:

czap -r "Nederland 1"
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
 80 Nederland
 80 Nederland 1: f 388000000, s 6875000, i 2, fec 0, qam 3, v 0x1522, a
status 03 | signal 7e7e | snr f3f3 | ber 00195000 | unc ffffffff |
status 1f | signal 7e7e | snr f3f3 | ber 00195000 | unc 00000021 |
status 1f | signal 7e7e | snr f4f4 | ber 00195000 | unc 00000000 |
status 1f | signal 7e7e | snr f4f4 | ber 00195000 | unc 00000000 |
status 1f | signal 7e7e | snr f3f3 | ber 00195000 | unc 00000000 |

However if I try to get a stream with dvbstream I get an empty file:

dvbstream 5410 5411 -o > Ned1.mpeg

I have tried Windows to check if hardware is ok and I got a working
picture there, so it should not be a hardware problem.

Also when leaving out the cam and then doing the above I do get a
non-empty file. But since all channels are encrypted by my cable company
I can't check if this file is valid mpeg.

Am I doing something wrong or is the combo I use not possible (yet)?

I'm very much willing to help on testing and/or debugging this.

Best regards,

Peter Schram <mail at peterschram.nl>

More information about the linux-dvb mailing list