[linux-dvb] Please see if you can help: Twinhan VP 1025 DVB-S PCI Card

Zoilo Gomez zoilo at xs4all.nl
Mon Aug 14 03:27:27 CEST 2006


I wonder if you might be experiencing the same problem that I have been 
describing over the last week.

It seems to me that hg (and in fact all snapshots after January 2006) 
are broken with respect to tuning by dst: whenever I run 'dvbscan -v 
<freqlist>', I get tuning value 0x00 all the time.

Have you tried to use the native drivers that come with 2.6.17.8, 
instead of using the latest hg-version? For me that works a lot better: 
the tuning values returned are then 0x1f, and the PMTs come up immediately.

Then again, I used a Twinhan Cab/CI 2031 card, but it is worth a try I 
think.

Z.

Dave Schile wrote:

> Hi list,
> I've been struggling with this for awhile now and I'm in need of some 
> insight.  The problem seems to be that the front end is unable to tune 
> to or monitor a signal.  Here is some background info:
>
> Card:
> Twinhan 1025 VisionPlus PCI DVB-S
> Kernel/Dist:
> 2.6.17.8, Debian testing.
> I just used hg to download the latest v4l-dvb and dvb-apps from 
> Mercurial and everything compiled and installed fine.  The drivers all 
> modprobe fine.  I modpobe in this order:
> dvb-core
> bttv
> dvb-bt8xx
> dst
>
> Is there anything I'm missing there?
> dmesg says:
> ###############dmesg#####################
> DVB: registering new adapter (bttv0).
> dst(0) dst_get_device_id: Recognise [DST-03T]
> dst(0) dst_get_device_id: Unsupported
> dst(0) dst_check_mb86a15: Found a MB86A15 NIM
> dst(0) dst_get_device_id: [DST-03T] has a [MB 86A15]
> dst(0) dst_get_device_id: [DST-03T] has a [MB 86A15]
> DST type flags : 0x2 ts204 0x4 symdiv 0x10 firmware version = 2
> dst(0) dst_get_mac: MAC Address=[00:08:ca:19:d2:00]
> DVB: registering frontend 0 (DST DVB-S)...
> ###########################################
> this seems fne to me.
> Now the problems...
> dvbtune to the satellite Galaxy 10R at 123 degrees west., I'm in 
> southern California:
>
> # dvbtune -f 11800000 -p V -s 26657
> Using DVB card "DST DVB-S"
> tuning DVB-S to L-Band:0, Pol:V Srate=26657000, 22kHz=off
> polling....
> Getting frontend event
> FE_STATUS:
> polling....
> polling....
> polling....
>
> Just goes on and on polling...
>
> Then I look a dvbsnoop frontend info:
>
> # dvbsnoop -s feinfo
> dvbsnoop V1.4.00 -- http://dvbsnoop.sourceforge.net/
>
> ---------------------------------------------------------
> FrontEnd Info...
> ---------------------------------------------------------
>
> Device: /dev/dvb/adapter0/frontend0
>
> Basic capabilities:
>    Name: "DST DVB-S"
>    Frontend-type:       QPSK (DVB-S)
>    Frequency (min):     950.000 MHz
>    Frequency (max):     2150.000 MHz
>    Frequency stepsiz:   1.000 MHz
>    Frequency tolerance: 29500
>    Symbol rate (min):     1.000000 MSym/s
>    Symbol rate (max):     45.000000 MSym/s
>    Symbol rate tolerance: 0 ppm
>    Notifier delay: 0 ms
>    Frontend capabilities:
>        auto inversion
>        FEC AUTO
>        QPSK
>
> Current parameters:
>    Frequency:  0.000 MHz
>    Inversion:  AUTO
>    Symbol rate:  26.657000 MSym/s
>    FEC:  FEC AUTO
>
> You can see that the freq is not set.  An interesting note is that up 
> in the basic capabilities section is lists frequency(max) as 2150.00 
> MHz.  Is that right?  The Ku-band satelite frequency is listed on 
> lyngsat.com as being 11800 MHz.  What am I missing there?
>
> Heres an interestng error from dvbsnoop:
>
> # dvbsnoop -pd 9 -s signal
> dvbsnoop V1.4.00 -- http://dvbsnoop.sourceforge.net/
>   DEMUX : /dev/dvb/adapter0/demux0
>   DVR   : /dev/dvb/adapter0/dvr0
>   FRONTEND: /dev/dvb/adapter0/frontend0
>
> ---------------------------------------------------------
> Transponder/Frequency signal strength statistics...
> Capabilities: BER: 1  SNR: 1  SIG: 1  STAT: 1  UBLK: 1
> ---------------------------------------------------------
> Error(95): frontend ioctl: Operation not supported
> cycle: 1  d_time: 0.001 s
>
> I've searched but I can't figure out what the Error(95) is .  Any ideas?
>
> a similar message comes from dvbtune:
> # dvbtune -m
> FE READ_BER: : Operation not supported
> FE READ UNCORRECTED BLOCKS: : Operation not supported
> Signal=0, Verror=0, SNR=0dB, BlockErrors=0, ()
> FE READ_BER: : Operation not supported
> FE READ UNCORRECTED BLOCKS: : Operation not supported
> Signal=0, Verror=0, SNR=0dB, BlockErrors=0, ()
> FE READ_BER: : Operation not supported
> FE READ UNCORRECTED BLOCKS: : Operation not supported
> Signal=0, Verror=0, SNR=0dB, BlockErrors=0, ()
> FE READ_BER: : Operation not supported
>
> and on and on..
>
> Finally I get this from every option of dst_test that I run.  I can't 
> find any documentation on this app though, so I'm not sure how it's 
> supposed to work.
> # dst_test -i
> main: Error opening /dev/dvb/adapter0/ca0
>
> This seems to be because ca0 is missing:
> /dev/dvb/adapter0# ls
> demux0  dvr0  frontend0  net0
>
> I would REALLY apprecate any help or insght you might have on this.  
> thank you very much for your consideration.
>
> Dave
>
>
>
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>




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