[linux-dvb] Hauppauge WinTV Nova-TD DVB-T USB stick reception problems

Henrik Beckman henrik.list at gmail.com
Mon Dec 17 13:46:53 CET 2007


Hi,

I assume that it´s me you mention.
I have my htpc running with a nova-TD and it´s working ok with the exception
of SVT1 which for some reasons occasionaly generates disconnects as seen on
the Nova-T 500. To note here is that I have a VIA usb card, using my onboard
nvidia USB led to hard hangs within ~4 hours with the nova-TD.

Reception is a tad better with the nova-T 500 (which also chokes on SVT1).
Contact me if you need more detailed information about my kernel .....

/Henrik


On Dec 16, 2007 5:07 PM, Tomas <psycho at pobox.com> wrote:

> Hello,
>
> I'm having problems tuning my Hauppauge WinTV Nova-TD USB DVB
> receiver.
>
> Scanning for channels works fine with the 'scan' utility, I have
> compared the result with the result from a scan performed using
> my Twinhan DTV Alpha USB stick (7045, not 7045A, which is another
> story...) and they are identical.
>
> But when it's time to record, using the same program I use with
> the Twinhan stick, I get (almost) no output, just a ridiculously
> high bit error rate (2097151) and SNR=0. I'm very surprised by
> this, as the channel scanning works just fine.
>
> As far as I understand, and as previously reported by Henrik
> Backman, the Nova-TD should work with the DVB-T broadcasts here
> in Sweden.
>
> Could my problems be caused by the important bug mentioned
> yesterday by Patrick Boettcher? If so, is there an earlier
> version of the driver which doesn't have this bug?
>
> The command used to test recording:
>
> ~# /usr/local/bin/dvbstream -f 490000 -p V -s 27500 -c 0 -o:test.ts 1029
> 1028
> dvbstream v0.6 - (C) Dave Chapman 2001-2004
> Released under the GPL.
> Latest version available from http://www.linuxstb.org/
> Processing -o:test.ts
> Open file test.ts
> Using DVB card "DiBcom 7000PC"
> tuning DVB-T (Stockholm Nacka) to 490000000 Hz, Bandwidth: 8
> polling....
> Getting frontend event
> FE_STATUS:
> polling....
> Getting frontend event
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_SYNC
> Event:  Frequency: 490000000
> Bit error rate: 2097151
> Signal strength: 65535
> SNR: 0
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_SYNC
> MAP 0, file test.ts: From -1 secs, To -1 secs, 2 PIDs -  1029 1028
> dvbstream will stop after -1 seconds (71582788 minutes)
> Setting filter for PID 1029
> Setting filter for PID 1028
> Using 224.0.1.2:5004:2
> version=2
> Streaming 2 streams
> Caught signal 2 - closing cleanly.
> ~# ls -la test.ts
> -rw-r--r-- 1 ath ath 188 Dec 16 16:43 test.ts
> ~#
>
> (I'm terminating the program by pressing Ctrl-C). Whether I get
> any packets at all seems totally random. In this attempt I got
> one single packet from several minutes of running dvbstream!
>
> A sample from the scan output:
>
> ~# grep '^SVT2:' .dvb_channels
>
> SVT2:490000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:1029:1028:5060
> ~#
>
> I have also tried tuning with tzap and recording using cat, but
> tzap gives this:
>
> ~# tzap -a 0 -c ~/.dvb_channels 'SVT2'
> using '/dev/dvb/adapter0/frontend0' and
> '/dev/dvb/adapter0/demux0'
> tuning to 490000000 Hz
> video pid 0x0405, audio pid 0x0404
> status 0f | signal b496 | snr 0000 | ber 001fffff | unc 00000000 |
> status 1e | signal ffff | snr 0000 | ber 00000000 | unc 00000000 |
> FE_HAS_LOCK
> status 1e | signal ffff | snr 0000 | ber 00000000 | unc 00000000 |
> FE_HAS_LOCK
> ...
>
> ~# tzap -a 1 -c ~/.dvb_channels 'SVT2'
> using '/dev/dvb/adapter1/frontend0' and
> '/dev/dvb/adapter1/demux0'
> tuning to 490000000 Hz
> video pid 0x0405, audio pid 0x0404
> status 1a | signal ffff | snr 0000 | ber 001fffff | unc 00000000 |
> FE_HAS_LOCK
> status 1a | signal ffff | snr 0000 | ber 001fffff | unc 00000000 |
> FE_HAS_LOCK
> status 1a | signal ffff | snr 0000 | ber 001fffff | unc 00000000 |
> FE_HAS_LOCK
> ...
>
> And the 'cat' command gives just as little TS data as dvbstream
> does.
>
> I'm using Linux kernel 2.6.22.6, and updated the dvb drivers from
> the hg sources about two hours ago. Relevant dmesg output:
>
> [ 1293.235000] usb 1-2: new high speed USB device using ehci_hcd and
> address 2
> [ 1293.350000] usb 1-2: configuration #1 chosen from 1 choice
> [ 1293.432000] dib0700: loaded with support for 5 different device-types
> [ 1293.440000] dvb-usb: found a 'Hauppauge Nova-TD Stick/Elgato Eye-TV
> Diversity' in cold state, will try to load a firmware
> [ 1293.858000] dvb-usb: downloading firmware from file '
> dvb-usb-dib0700-1.10.fw'
> [ 1294.146000] dib0700: firmware started successfully.
> [ 1294.648000] dvb-usb: found a 'Hauppauge Nova-TD Stick/Elgato Eye-TV
> Diversity' in warm state.
> [ 1294.649000] dvb-usb: will pass the complete MPEG2 transport stream to
> the software demuxer.
> [ 1294.649000] DVB: registering new adapter (Hauppauge Nova-TD
> Stick/Elgato Eye-TV Diversity)
> [ 1294.875000] DVB: registering frontend 0 (DiBcom 7000PC)...
> [ 1294.907000] MT2266: successfully identified
> [ 1295.060000] dvb-usb: will pass the complete MPEG2 transport stream to
> the software demuxer.
> [ 1295.061000] DVB: registering new adapter (Hauppauge Nova-TD
> Stick/Elgato Eye-TV Diversity)
> [ 1295.223000] DVB: registering frontend 1 (DiBcom 7000PC)...
> [ 1295.228000] MT2266: successfully identified
> [ 1295.382000] input: IR-receiver inside an USB DVB receiver as
> /class/input/input7
> [ 1295.382000] dvb-usb: schedule remote query interval to 150 msecs.
> [ 1295.383000] dvb-usb: Hauppauge Nova-TD Stick/Elgato Eye-TV Diversity
> successfully initialized and connected.
> [ 1295.383000] usbcore: registered new interface driver dvb_usb_dib0700
>
> The firmware is a renamed dvb-usb-dib0700-03-pre1.fw :
>
> ~# ls -la /lib/firmware/dvb*
> -rw-r--r-- 1 root root 33277 2007-12-04 15:51 /lib/firmware/dvb-
> usb-dib0700-03-pre1.fw
> -rw-r--r-- 1 root root 33277 2007-12-04 15:51 /lib/firmware/dvb-
> usb-dib0700-1.10.fw
> ~# cmp /lib/firmware/dvb-usb-dib0700-*
> ~#
>
> I've just spent over an hour fighting with mythtv configuration
> (I installed the Debian packages) and would appreciate
> suggestions that do not involve mythtv, as I can't get the thing
> working.
>
> /Tomas
>
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