[mythtv-users] Another n00b with a (simple?) problem

Christopher McEwan christopher.mcewan at gmail.com
Mon Dec 13 16:40:04 UTC 2004


I ended up compiling the 2.6.9 kernel to get the Nova-T (90002)
working under FC2.

output from lsmod

cx8800                 25240  0
bttv                  142928  0
cx88_dvb                6788  5
cx22702                 9220  2 cx88_dvb
cx8802                  7172  1 cx88_dvb
cx88xx                 42652  3 cx8800,cx88_dvb,cx8802
dvb_core               73264  7 cx88_dvb,cx22702
videodev                7680  3 cx8800,bttv,cx88xx
i2c_algo_bit            8456  2 bttv,cx88xx
v4l1_compat            12036  1 cx8800
v4l2_common             5248  2 cx8800,bttv
btcx_risc               4104  4 cx8800,bttv,cx8802,cx88xx
video_buf              17028  5 cx8800,bttv,cx88_dvb,cx8802,cx88xx

Hope that helps ??


On Sat, 11 Dec 2004 19:33:48 +0000, Derek Jennings
<derek at disposable.dnsalias.org> wrote:
> On Saturday 11 December 2004 18:16, Daniel Howell wrote:
> 
> 
> > Hi all,
> >
> > New to the list and, as with many first time posters I imagine, having
> > the typical problems. Not actually with MythTV itself (well, some minor
> > little problems, but one thing at a time, eh?!). If these questions
> > really need to be directed towards the ivtv mailing list, then fair
> > enough - tell me to sod orf - but I figure most people here will be
> > using the cards in the same way I'm planning to - ie. purely for mythtv.
> > Well, I hope so anyway! Would appreciate any advice or guidance anyone
> > could offer. First some hardware background :-
> >
> > XP2200 on Abit mATX motherboard
> > Onboard VIA sound/network
> > New Hauppauge PVR350
> > New Hauppauge NOVA-T (DVB-T) card
> > nVidia 5200 AGP
> > Fedora Core 3
> >
> > Following Jarods guide, I've got all the latest patches and running the
> > latest kernel, apt has been a wonderful friend and had saved me lots of
> > hassle. The sound works, the nVidia card works, and the PVR350 works
> > fine (I installed this first, by itself, to simplify matters).
> >
> > The NOVA-T card, however, is causing much more grief. I'm not getting
> > and /dev/dvb device files appear, which from scouring on the internet
> > seems to be a populat thing. Running the instdev.sh script creates them,
> > but none of the created devices are valid - dvbtune, for example,
> > doesn't pull anything valid from them. It seems obvious that the driver
> > module isn't loading or initialising properly.
> >
> > The quick and simple question to ask to the list is, does anyone have a
> > modprobe.conf that includes all the lines for running a PVR350 and NOVAT
> > in the same machine (on FC3)?
> >
> > However I'd rather understand what all the bttv, ivtv, cx8800, etc
> > drivers are actually for, and which ones are needed for each card - and
> > how I load more than one, associate it with multiple cards, etc. At the
> > moment, I'm hacking around trying multiple combinations but not really
> > understanding what I'm doing - and I don't really want to be doing that,
> > I'd rather what it all means. The commands (alias, install, etc) are
> > fine - it's just the general structure of the file - for example...
> >
> > How does "char-major-81" relate to anything?! I mean, how does anyone
> > know that's what's got to be entered?! What does it *mean*? 81-0 and
> > 81-1 - is that referring to individual PCI instances of cards, or
> > devices on a PCI card itself (encoder, decoder, tuner for example)?
> >
> > bttv, ivtv, cx8800 - is my understanding right here.... my current
> > understanding is that bttv is for bt848 chips, of which the PVR350 uses
> > it on the tuner only, so I need that. Cx8800 is for the connexant chips,
> > of which the NOVAT has a couple, so I want that on the NOVA-T card.
> > Finally, the ivtv driver is purely for the encoder/decoder on the PVR
> > card (not the tuner). I've browsed so many sites now my mind is a mush
> > of people saying one thing or another (or, in most cases, telling you to
> > do something but not explaining why)...
> >
> > The options parameter - in particular "card" and "tuner" - where is this
> > magical list of all the options?!
> >
> > Some lspci outputs/etc are here (save flooding the mail list) :-
> >
> > http://forums.kustompcs.co.uk/showpost.php?p=207362&postcount=23
> >
> > If there's anything I'm missing, please shout ;]
> >
> > All the best,
> > Dan Howell
> > Birmingham, UK
> 
> It looks like you have the latest Nova-T card using the Conexant chip set.
> I have just been through the issue of getting drivers for this card.
> I'm a Mandrake user, but it should be much the same for Fedora.
> 
> The driver you need is cx88-dvb  I do not know it it is in FC-3, but the
> procedure I used to insert it in my kernel is described here.
> http://www.linuxtv.org/mailinglists/linux-dvb/2004/11-2004/msg00618.html
> 
> My modprobe.conf entry is
> #Nova-T card with Conexant chipset
> install dvb-nova-cx /sbin/modprobe videodev && { /sbin/modprobe
> dvb-core; /sbin/modprobe v4l1-compat; /sbin/modprobe
> v4l2-common; /sbin/modprobe video-buf
> ; /sbin/modprobe cx88-dvb; /bin/true; }
> 
> and my modprobe.preload contains
> dvb-nova-cx
> 
> Good luck
> derek
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> mythtv-users at mythtv.org
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> 


-- 
Regards,


~CM


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