On Monday 21 October 2002 10:54, Gerd Knorr wrote: > > Then I tried to alter the saa7134 registers with function > > saa_writeb(), I added an ioctl to access the driver to do this. The > > thing is made so that it is executed in the function 'tvaudio_init'. I > > tried to change audio registers more or less randomly but I could not > > make any change with it. However, what works is poking the whole > > address range 0x000-0x1ff with zeros (I hope doing such stuff will not > > destroy something...). > > Intresting. Can you try to trim down the register range? I suggest to > start with 0x140-0x17f (which are the audio ctrl registers). I did that. It works for me now, when I insert saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x00); just before saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x01); in tvaudio_init(). I tried several times and it seems reproducible to me. I think that my system is a rather good test case, as the sound nearly never worked before. I have a Tevion MD 9717 card. The only problem I found now is that one time I only got white noise as sound in xawtv directly after program start. After switching the channel the normal sound appeared but was still very noise. After a second channel switch everything was fine. That behaviour is not reproducible. Thank you very much for your hints! Bye, Martin
