[linux-dvb] Re: Tuning/Decoder Problem with version 0.9

[Marcus O.C. Metzler <mocm@convergence.de>]

Henning Holtschneider writes:
 > On Wed, 4 Apr 2001, Peter Huecker wrote:
 > 
 > > after the support for the new tuner STVxxx was included  I've
 > > installed the new CVS drivers. (I've a Hauppage DVB-S with the
 > > new chipset)
 > >
 > > First I've done 'make insmod' => n-tv appeard on the attached TV
 > >
 > > I tried the new ntuxzap, but after selecting a channel the TV screen
 > > turns black and nothing happens anymore.
 > 
 > I've got almost the same problem. 'make insmod' will let the screen
...
 > computer off yesterday evening and today the problem reappeared right
 > after I booted the system and loaded the driver.
 > 

We will have to look into that. This may be a timing problem with the
new tuner/demodulator combo.

 > I also tried to record a show wih tuxplayer. I haven't used the dvbdriver
 > under Linux before (since I have the new Hauppauge card) so I'm probably

Recording is not yet implemented in tuxplayer. Sorry, I should have
disabled the button. Anyway, you would have to leave tuxzap running
while recording. You can try starting tuxzap, setting the channel and
pushing the tux button. Then use a shell and type "cat /dev/ost/dvr >
filename". This should record the program. Remember, tuxzap has to be
running. Instead of using tuxzap, you could also use ntuxzap with the
option -e.

 

 > If I can be of any help in this matter I would be glad to help. I've put
 > together the system to be used as a digital VCR, but this doesn't work yet
 > because the original Hauppauge software under Windows is pretty useless,
 > WinDVB2000 doesn't work with the new model (at least I didn't get anything
 > but the OSD) and Klaus hasn't ported VDR to the new API. So, I have plenty
 > of time to fool around with the driver ;-)
 > 

You could try if a different timing changes the channel switching
behavior. This can be done by playing with libdvb, i.e. the usleep
call in the "feStatus DVB::tune_it(struct qpskParameters *qpsk)"
routine in DVB.cc. You could also try to set sleep calls after other
ioctl calls.


Marcus

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Dr. Marcus Metzler                             
mocm@netcologne.de                     http://www.metzlerbros.de
mocm@convergence.de                    http://www.convergence.de

Convergence Integrated Media GmbH          
Rosenthaler Str. 51                   
D-10178 Berlin                             
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