Trouble with Techontrend dvb-t budget card

  • Hi have been struggling for a some time now to get my tt-budget card to work in Linux (Gentoo with the latest 2.4 kernel, Athlon 1600+ with 1gig ram), but with no success. The card works perfectly in the same machine when booting to Win2k. The Signal level in windows is between 83% - 100% and the Quality is 100%. But when I switch to Linux, the quality drops radically. When running VDR with the femon plugin, I'll get a "pumping" action for the second bar (I guess it's the signal-quality bar), and at between zero and the red area.


    When the "pumping" has been for a while (maybe 10 -20 sec), the signal gets steady, and the channel locks in on some channels. Most channels won't tune in at all, but those who tune, work only after much swapping between channels before the signal is tuned in.


    I have the copied the ttlcdacc.dll file from the TT-install directory to /usr/lib/hotplug/firmware/tda1004x.bin as described in the docs, and it get's loaded (atleast no errors in /var/lib/messages)

  • Hi,


    I'm sorry that I don't have an idea what could be your problem, but there have been some posts about DVB-T recieving more with windoze.
    Which DVB-driver Version do you use? Maybe the 1.1.x-drivers cause problems here, too?


    I'm running a Lorenzen (TT-based) DVB-T and I'm able to tune quite good (not the newest DVB-drivers.


    Hannes


    robbitobbi://Scenic xB @ 866MHz/~Nexus2.1 - Budget TT 1.0 (Empfangs-VDR)
    fliewatueuet://ScenicxB @ 800MHz/~i810fb-xinelibout (Client)

  • Zitat

    Originally posted by hannsens
    I'm sorry that I don't have an idea what could be your problem, but there have been some posts about DVB-T recieving more with windoze.


    Actually I want to get rid of whinedow$. I just wanted to explain that the card works perfectly in it ;(


    Zitat


    Which DVB-driver Version do you use? Maybe the 1.1.x-drivers cause problems here, too?


    I'm running a Lorenzen (TT-based) DVB-T and I'm able to tune quite good (not the newest DVB-drivers.


    I have tested the 1.x.x drivers, and latest CVS without success.. I was already thinking that I would upgrade to the 2.6.x kernel, but that should not do any difference to what I have now..


    René

  • Which tuner is in the card you're having problems with? I've got 2 x DVB-T in my machine and one of the cards performs dreadfully - breakup on 64QAM multiplexes and a generally bad SNR on 16QAM. The tuner in that one is a Grundig 29504-401, my working great one is a Philips TDA10045H.


    Annoyingly, I can't remember whether it was always ropey or whether it just happened since I rebuilt the hardware.


    I'm wondering whether the card is toast after just over a year, or whether there's a driver issue - I've not got a windows machine to test it in.

  • The new drivers linuxtv-dvb-1.1.x are IMHO not as good as the older one 1.0.1 (but only if you use a DVB-T card), channel switching is not very reliable and very slow (up to 30 seconds).


    I would suggest that you try on of the latest dvb cvs driver. Of course in this case you have to compile this driver by yourselves.


    This is the one i use:
    http://www.linuxdvb.tv/download/dvb-20040620.tar.bz2


    Works very good, very fast channel switching (1..2 seconds). I'm using a SL DVB-T card like hannes, which uses the tda1004x frontend.

  • Zitat


    Which tuner is in the card you're having problems with? I've got 2 x DVB-T in my machine and one of the cards performs dreadfully - breakup on 64QAM multiplexes and a generally bad SNR on 16QAM. The tuner in that one is a Grundig 29504-401, my working great one is a Philips TDA10045H.


    My card seems to be the same card as you have. In the upper left corner of PCB is written:


    B2T1110
    Rev 1.1


    Could be that mine is a different build?


    Zitat

    I'm wondering whether the card is toast after just over a year, or whether there's a driver issue - I've not got a windows machine to test it in.


    Mine can't be toasted, cause it works perfectly in winblows.. ;(

  • Zitat


    I would suggest that you try on of the latest dvb cvs driver. Of course in this case you have to compile this driver by yourselves.


    This is the one i use:
    http://www.linuxdvb.tv/download/dvb-20040620.tar.bz2


    I tested this driver version, and I got the first channel to display nicely. But switching channels screwed up everything :(


    Tailing the syslog during the run of ./insmod.sh load gives me this:


    The output Looks to me to be quite normal..


    When I start vdr I get this output..:


    But when fumbling with vdr, i'll get this in my log


    etc.etc.


    But what p*sses me off is that I have now tested this card in two differend computers, installed debian woody & sarge, and gentoo. With prebuilt packages (debian), and the packages found with portage. I have also compiled numerous driverversions in each distro, and all with the same result. If i would have trouble in windows, the i would claim for a warranty-replacemet for this card, but when the problem occurs in linux, then i don't think thati have a chance to get an replacement... ;(

  • You are using the same firmware version as u use in Windows?

  • Zitat

    You are using the same firmware version as u use in Windows?


    Budgetcards don't use any firmware, but I have tested both 2.15a and 2.16 versions of the frontend. 2.17 and 2.17d don't work.


    All versions of the frontend work fine in winblows...

  • Zitat

    Original von Rene


    Budgetcards don't use any firmware, but I have tested both 2.15a and 2.16 versions of the frontend. 2.17 and 2.17d don't work.


    All versions of the frontend work fine in winblows...


    *copy && paste*


    I have the copied the ttlcdacc.dll file from the TT-install directory to /usr/lib/hotplug/firmware/tda1004x.bin as described in the docs,



    It's not right, the budget-cards with tda1004x driver use firmware, exactly the firmware-file named tda1004x.bin you have copied. But if you have use the 2.15 or 2.16 it's ok anyhow.

  • hi,


    you might try changes along another path (which at least brought the light for me).


    I have a second PC with a TT-Budget and a Nova-T (which is also a TT card) running with the ct-2 distribution. I had very bad reception and often complete failures after channel switching until I


    1) changed the drivers back to 1.0.1


    2) assigned the PCI-interrupts by hand in the BIOS so that neither DVB card conflicted with other hardware (I had to move one card and disable all unused hardware like sound, USB etc. to achieve this)


    After those two changes the system now runs fine (using a Siemens DVB-C as output device). This sounds like a time jump back to the early days of windows. But as long as it helps, I don't care.



    Cheers


    /ecdi

Jetzt mitmachen!

Sie haben noch kein Benutzerkonto auf unserer Seite? Registrieren Sie sich kostenlos und nehmen Sie an unserer Community teil!