[linux-dvb] High BER's & Glitching with newer drivers, better with 1.0.0-pre2 (Nova-T)

[Dave <dave_fluff@yahoo.com>]

Hullo,

I've just given the new 1.0.1 driver a go with my NOVA-T, but I'm still
having problems with it.  I get a lot more digital breakup/glitches,
etc. than I did with the driver I was previously using, 1.0.0-pre2.

Just to give you some numbers, when looking at the same mux (BBC Mux
1)from Crystal Palace, with pre2 I get typical readings of:

snr e6e6 | ber 000000ea | unc 00000000 
snr e5e5 | ber 000000e8 | unc 00000000 
snr e5e5 | ber 000000e5 | unc 00000000 

....I do get the occasional unconcealed error, but only a couple over,
say, half an hour.

Using drivers 1.0.0-pre3 up to 1.0.1, I get typical readings of:

snr e5e5 | ber 00000158 | unc 0000000f 
snr e5e5 | ber 00000149 | unc 0000000d 
snr e5e5 | ber 00000139 | unc 0000000d 
snr e3e3 | ber 00000166 | unc 00000020 
snr d5d5 | ber 000000e8 | unc 0000000a

i.e the SNR fluctuates more, the BER is generally higher, and I get a
large number of unconcealed errors.

The above readings were taken within 10 minutes of each other, with the
only change being the driver version loaded.

I'm using a NOVA-T card (grundig_29504-401 front end), and a 2.4.20
kernel.

I think I saw a string of posts about similar problems recently, but
they appear to have dried up recently.  The last time I posted about
this, someone suggested that I go through the CVS between pre2 and pre3
and find out what date the error appears.  I haven't done this, mainly
because I'm not adept enough at using CVS (my "coding" skills don't go
much beyond scripts), but if someone thinks this is a good approach,
and want's to post some breif instructions on how I pull specific dates
from the cvs, then I'll give that a go.

Cheers,
--Dave




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