[linux-dvb] ttusb-budget / TT-Nova-USB does not tune
Joachiml-vdr at laier-online.de
Tue Mar 22 19:26:35 CET 2005
I'm having trouble with the installation of my Nova-USB box.
First I tested the box with the Windows SW and it worked alright.
However so far I haven't managed to receive anything with the Linux
drivers. On my notebook I have SuSE 9.0 with Kernel 2.4.21. Compilation
of linux-dvb from cvs (2005-03-14) worked without any problems and the
script 'insmod.sh start' worked without error messages.
When I plug in the USB box I get several error messages from the hotplug
system but the don't seem to cause any problem. From /var/log/messages
I get the information that the drivers seem to recognise the USB box.
Mar 18 18:12:56 mannem kernel: Linux video capture interface: v1.00
Mar 18 18:12:56 mannem kernel: saa7146: register extension 'budget dvb'.
Mar 18 18:12:56 mannem kernel: saa7146: register extension 'budget_ci
Mar 18 18:12:56 mannem kernel: saa7146: register extension 'budget
dvb /w video in'.
Mar 18 18:12:56 mannem kernel: usb.c: registered new driver
Mar 18 18:12:58 mannem kernel: ttusb_init_controller: dsp-version: 0.0
Mar 18 18:12:58 mannem kernel: DVB: registering new adapter
Mar 18 18:12:58 mannem kernel: probe_tuner: try to attach to
Mar 18 18:12:58 mannem kernel: stv0299.c: setup for tuner SU1278
Mar 18 18:12:58 mannem kernel: DVB: registering frontend 0:0
Mar 18 18:12:59 mannem kernel: usb.c: registered new driver ttusb-dec
If I try to tune to a certain channel I get the following output:
mannem:/usr/local/src/DVB/util/szap # ./szap -n 1
reading channels from file '/root/.szap/channels.conf'
zapping to 1 'Das Erste':
sat 0, frequency = 11837 MHz H, symbolrate 27500000, vpid = 0x0065, apid
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
status 03 | signal d63f | snr 71f4 | ber 00000000 | unc 00000000 |
status 03 | signal d5cb | snr 71c7 | ber 00000000 | unc 00000000 |
status 03 | signal d4b0 | snr 71e2 | ber 00000000 | unc 00000000 |
status 03 | signal d80f | snr 71f7 | ber 00000000 | unc 00000000 |
The value of 'ber' sometimes shows some values other than 0000000 but I
haven't figured out the conditions for that.
I realised antother strange behaviour. I tested the box with two
different antennas and locations. With the first antenna Windows says
that the signal strength is about 30-40% (aprox. 4-6 dB), the second
antenna gives a signal of 80-90% (aprox. 10-11dB). With both antennas I
get a signal quality of 100% and a error free picture.
Under Linux I get the same values for 'signal' and 'snr'.
I tried the new firmware that's delivered with the latest windows-SW. I
wrote a small program that converted the firmware into the fw header
file 'dvb-ttusb-dspbootcode.h'. That hasn't changed anything either.
I have checked the newsgroup archives and google for several
hours/days/nights :( and haven't got a clue what to do to get that box
Could you give me a hint where the problem could be.
Thanks in advance.
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