[linux-dvb] KNC-1+Cineview CAM+Tuning Problems

Manfred Petz pm at deuromedia.at
Tue Apr 18 13:28:46 CEST 2006


i'm using a KNC-1 (stv0299) + cineview with a cryptoworks CAM + orf card. i'm
using the latest hg version of the dvb driver. the knc-1 is connected to 
a technisat gigaswitch 11/20.

1st problem:

   i'm experiencing strange tuning problems in conjunction with the CAM
   inserted or removed. after using a streaming software, initializing the
   CAM etc and terminating it, i cannot tune again, quite reproducibly.
   i checked also with szap(1):

 	status 03 | signal a76e | snr 89ca | ber 00000000 | unc 00000000 |
 	status 03 | signal b038 | snr 8f3a | ber 00000000 | unc 00000000 |

   after removing and re-inserting the cam, i almost instantly get a

 	status 1f | signal a8bb | snr c4bf | ber 00002d00 | unc 00000000 | FE_HAS_LOCK
 	status 1f | signal a641 | snr c4e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

   though, this is not reproducible. sometimes i have to remove/re-insert the CAM
   2-3 times. sometimes i got a lock only after removing the CAM.

2nd problem:

   i can decrypt only one channel at once (it is definitely not a CAM initialization
   problem). though, i know that the cryptoworks can decrypt at least 3 channels at
   the same time (and the streaming software can also). i am doing this with some
   other servers (but with wintv cards).

   with kernels around 2.6.11 i had none of those problems even with knc-1 cards, though
   i used a previous generation of the knc-1.

   once, while ejecting and re-inserting the cryptoworks, i got that dmesg:

 	budget-av: cam ejected
 	budget-av: cam inserted
 	dvb_ca adapter 0: Invalid PC card inserted :(

   i also got this once:

 	dvb_ca adapter 0: CAM tried to send a buffer larger than the link buffer size (65535 > 128)!

# lspci

03:05.0 Multimedia controller: Philips Semiconductors SAA7146 (rev 01)
         Subsystem: KNC One: Unknown device 0010
         Flags: bus master, medium devsel, latency 32, IRQ 17
         Memory at dfefea00 (32-bit, non-prefetchable) [size=512]


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