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stdPikachu
Apprentice
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Joined: 10 Mar 2004
Posts: 254
Location: UK

PostPosted: Sat Jun 19, 2004 9:56 pm    Post subject: DVB pain Reply with quote

Hmm, not sure if this is the right place for this, but here we go anyway.

Any tips on getting a Hauppauge Nova-T card working under 2.6? There's a million-and-one howto's for doing this under 2.4, but I was under the impression that DVB was much easier to get working under 2.6 (from 2.6.4 onwards anyway).

Where to begin? Well for one I'm not sure what modules I need to get it working (I'm guessing I need at least bttv and saa7146 budget modules). Some people have suggested I just rm -rf my current DVB modules, manually compile them with the tarbz's from linuxtv.org and then chuck them in the right dirs. Obviously this doesn't sound like too great an idea to me (and they still don't say which modules I should need), since they'll get overwritten whenever I build a new kernel.

At the moment, I'm loading a truckload of modules, but nothing is being created under the /dev/dvb tree (I'm using devfs) - do I need to mknod manually?

Again onto libdvb (dependency of mythfrontend). Has *anyone* successfully compiled this under 2.6 from portage without making hideous symlinks into the kernel tree? Or are the ebuilds just b0rked? At the moment it seems to only work with 2.4, and yet again people have said "don't even attempt DVB under 2.6, use a 2.4 kernel", which I don't want to do since this'll be my first play with 2.6 and it's meant to be *easy*, damnit! Do I even need libdvb? Again, the docs are quite scant on this.

Thanks if anyone has any info on this one!

P.S. this is all going into my monolithic Gentoo/MythTV howto (I'm trying to fit every possible customisation into it, and then release it to the world so it can be filled with more generic/less UK-ey info - dunno if it's the kinda thing the Gentoo Documentation project is interested in), so first person to come up with a clever answer gets 5000 points, a big bowl of raspberry jelly and an official credit! Umm, yes.
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stdPikachu
Apprentice
Apprentice


Joined: 10 Mar 2004
Posts: 254
Location: UK

PostPosted: Sat Jun 19, 2004 11:51 pm    Post subject: Reply with quote

(Bah, replying to myself again!)

OK, after alot of mucking about with modules, I've managed to get my DVB frontend registered:

Code:
seyton root # dmesg | grep DVB
DVB: registering new adapter (TT-Budget/WinTV-NOVA-T  PCI).
DVB: registering frontend 0:0 (Grundig 29504-401)...


which is all well and good. I then compiled and installed some of the DVB apps from the LinuxTV website, namely scan and tzap, in order to try and set up my channels. The scan tool seems to like to alternate between these errors:

Code:
seyton scan $ ./scan -5 dvb-t/uk-CrystalPalace > ~/.tzap/channels.conf
scanning dvb-t/uk-CrystalPalace
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
Frontend can not do INVERSION_AUTO, trying INVERSION_OFF instead
initial transponder 505833333 0 3 0 1 0 0 0
>>> tune to: 505833333:INVERSION_OFF:BANDWIDTH_8_MHZ:FEC_3_4:FEC_NONE:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
WARNING: filter timeout pid 0x0011
WARNING: filter timeout pid 0x0000
WARNING: filter timeout pid 0x0010
dumping lists (0 services)
Done.


Code:
seyton scan $ ./scan -a0 -f0 -d0 -t1 dvb-t/uk-CrystalPalace
scanning dvb-t/uk-CrystalPalace
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
Frontend can not do INVERSION_AUTO, trying INVERSION_OFF instead
initial transponder 505833333 0 3 0 1 0 0 0
>>> tune to: 505833333:INVERSION_OFF:BANDWIDTH_8_MHZ:FEC_3_4:FEC_NONE:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
WARNING: >>> tuning failed!!!
>>> tune to: 505833333:INVERSION_OFF:BANDWIDTH_8_MHZ:FEC_3_4:FEC_NONE:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE (tuning failed)
WARNING: >>> tuning failed!!!
ERROR: initial tuning failed
dumping lists (0 services)
Done.


(-t 1 to specify TV info only)

Any idea what these problems are? The first error (timeout) seems to be something no-one has solved (there's about two hits on google/linuxtv mailing list for it), the second seems to be related to not being able to tune into things (again, very few posts on google) which someone managed to achieve when they pulled their aerial out.

Granted, I'm only using a fairly small internal aerial, but seeing as I can *see* the throbbing 1000kW of Crystal Palace, I didn't think it'd be much of a problem. Am I failing to load some important tuning module, or is my aerial just b0rked?
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mathgeek
Tux's lil' helper
Tux's lil' helper


Joined: 12 Oct 2004
Posts: 103
Location: Ulm, Germany

PostPosted: Tue Jun 27, 2006 8:39 am    Post subject: Reply with quote

Hi!

I am unable to tune into any channels, too. My adapter seems to be doing fine, as well as my self made aerial, since my receiver (for my TV) is working with full signal strength and very good quality. I would be surprised if my problems were due to a defective hardware since the box works under some other operating system. But the software for this system is painfully slow and not nice to use. Some time ago I used to be able to use the box under linux but unfortunately I'm unable to determine since when it does not work anymore.
Hope this can be solved! I will check the linuxtv archives again for any clues.
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