[mythtv-users] Best version for DVB-T

Robin Neatherway robthebob at gmail.com
Tue Mar 14 10:02:40 UTC 2006


I'm using two of the Connexant Nova-T's i.e. the affected card. My
tuning would always get there in the end, but in live TV this could
take up to 15 seconds, after which the picture would be jerky a lot of
the time, strangely fixable with a pause/play. One guy suggested
installing the cvs dvb drivers from linuxtv, which I did, but this
didn't seem to help. In the end I patched the 0.19-fixes branch to
include usleeps for 1/5 second after a couple of operations as per the
other thread and this has improved the situation. My tuning is down to
about 6 seconds, still hardly great, but significantly better and the
picture is fine straight away. I hesitate to say why it's still up at
around 6 seconds, but it's likely to be some other bottleneck of my
own accidental devising.

HTH

Robin

On 3/14/06, Nick Craig-Wood <nick at craig-wood.com> wrote:
> On Mon, Mar 13, 2006 at 10:03:43PM +0000, Nick wrote:
> > To other DVB/0.19 users,
> >
> > Is the DVB/0.19 problem specific to the Nova-T support in the kernel's
> > DVB code, or does it affect other DVB cards also using the cx88-dvb
> > module?
>
> I have two of the original Nova-T.  Recordings seem to work
> absolutely perfectly.  Not had any problems there.  However I can't
> make LiveTV work at all.
>
> The Nova-T appear thus in lspci
>
> 0000:01:03.0 Multimedia controller: Philips Semiconductors SAA7146 (rev 01)
> 0000:01:04.0 Multimedia controller: Philips Semiconductors SAA7146 (rev 01)
>
> and use these modules (ie not cx88-dvb)
>
> saa7146_vv             43168  0
> mt312                   7204  0
> cx24110                 7108  0
> ves1820                 5924  0
> ves1x93                 6020  0
> video_buf              19748  1 saa7146_vv
> v4l2_common             5632  1 saa7146_vv
> v4l1_compat            12516  1 saa7146_vv
> videodev                8768  1 saa7146_vv
> budget_ci              13344  2
> tda1004x               12356  1 budget_ci
> firmware_class          9696  2 budget_ci,tda1004x
> budget_core             8708  1 budget_ci
> saa7146                16616  3 saa7146_vv,budget_ci,budget_core
> ttpci_eeprom            2496  1 budget_core
> stv0299                 9544  1 budget_ci
> dvb_core               71624  3 budget_ci,budget_core,stv0299
>
> This is with kernel 2.6.15 and the latest firmware I could find for the tda1004x
>
> --
> Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick
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