[linux-dvb] ASUSTEK P7131 Dual TV dvb mode?

hermann pitton hermann-pitton at arcor.de
Tue Oct 3 00:06:53 CEST 2006


Hi,

Am Montag, den 02.10.2006, 22:56 +0300 schrieb v+dvb at iki.fi:
> On Mon, Oct 02, 2006 at 07:59:13PM +0300, you [v+dvb at iki.fi] wrote:
> >  
> > > You could also enable debug=1 for saa7134-alsa, maybe your system
> > > produces buffer over/underuns. Not the case for me.
> > 
> > It might also be buffer underruns. I'll try debug=1.
> 
> I think it was just poor quality, but I do get these:
> 
> [49991.050864] saa7133[0]: gpio: mode=0x0200000 in=0x0000000 out=0x0200000 [Radio]
> [49993.535515] saa7133[0]: dsp access error
> [49993.535518] saa7133[0]: dsp access error
> [49993.535523] saa7133[0]: dsp access error
> [49993.535526] saa7133[0]: dsp access error
> [49993.535530] saa7133[0]: gpio: mode=0x0200000 in=0x0000000 out=0x0200000 [Radio]
> [49993.535532] saa7133[0]: dsp access error
> [49994.843844] saa7133[0]: dsp access error
> [49994.843848] saa7133[0]: dsp access error
> ...
> 
> in the kernel log.

oops, you mentioned you use "fm" from fmtools and I didn't remember
immediately that there is an issue with it and this radio tuner, but I
pointed to it in another mail today on the video4linux-list.

fm just tunes in and quits, but this tuner goes to standby, if not used.
Unfortunately after using "fm" it produces unmuted noise.
Use kradio (v4l2!) or radio from xawtv. Gnomeradio should be fine too,
but don't have it installed currently on that machine.

"while true; do ./fm -d /dev/radio1 102.5 62000; done"
gives me continious cracks too. Must be caused by walking ioctls.
With the other apps 
"arecord -D hw:2,0 -r 32000 -c 2 -f S16_LE | aplay" in my case works
fine.

Also don't get dsp access errors. Do they persist after reloading the
modules? Hmm, maybe some incompatible alsa stuff.

For the antenna input question in your previous mail, yes, you can just
use the cable-tv input for DVB-T without using radio previously. This
will change as soon Hartmut picks up the patch, which automates the DVB-
T antenna input setting from within saa7134-dvb for that card.

Cheers,
Hermann







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