[linux-dvb] HVR3000 Analogue tuner problems

Robert Longbottom RobertCL at iname.com
Sun Jan 7 11:13:39 CET 2007

sibaz at sibaz.com wrote:
> Hi,
>    I'm running kubuntu with a 2.6.17 kernel and I've installed the 
> latest v4l as per http://www.mythtvtalk.com/forum/viewtopic.php?p=17223, 
> and while I can get S-Video working, scantv and tvtime-scanner don't 
> seem to do anything to the tuner.  I've tried rmmod and insmod ing the 
> tuner module a few times, but it doesn't help.  My tuner just won't pick 
> up any of the analogue signals present.  

The key for me when rmmoding and modprobing is getting the following 
line to appear in dmesg :

	tda9887 2-0043: tda988[5/6/7] found @ 0x43 (tuner)

Until I've got that, the tuner doesn't work properly.  I also have the 
following in my modules.conf:

	options cx88xx i2c_scan=1

I'm not sure if it makes any difference of not.  But it might be worth a 

> I've tested using a TV signal 
> generator and it can't find that either.  I can't test DVB-T as that 
> won't reach me here until the London switch over day.   If I whether I 
> unload the tuner module or not, when I run scantv it appears to run fine 
> (but clearly doesn't as it doesn't pick up any signals).  How can I tell 
> that it is talking to the device correctly.  I've seen 
> http://www.linuxtv.org/pipermail/linux-dvb/2006-December/014732.html 
> which talks about a similar problem, although I haven't had Roberts 
> success when unloading and reloading the tuner module.
>    As an aside (and possibly unrelated) the machine in question dual 
> booted fine, then I started messing with the linux kernel and now WinXP 
> won't boot.  I can start it in safe mode, but if I try normally it just 
> spends for ever doing the night rider thing without ever booting.
>    Any thoughts?

Other than that, you could try posting the output of lsmod and of dmesg. 
  Someone might just spot something that is wrong / or missing.

I have the HVR3000 semi-working, in that Analog is generally ok (apart 
from the tuner problem and a problem with an occasional crackle on the 
audio which I've not tracked down yet).  DVB-S kind of works as well, 
but sometimes it seems to have a problem getting a lock onto a channel 
and the quality isn't as good as from the same signal through my set-top 
box.  I seem to get regular artifacts and audio glitches whereas I never 
  get any via the STB.

I was trying to see if this was the same in Windows last night, but the 
that stupid WinTV2000 software wouldn't find any channels at all (it 
took me long enough just to get the channel manager window to work at 
all! :-@)


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