theYinYeti Posted November 24, 2004 Report Share Posted November 24, 2004 (edited) Hello, I have a saa7134-based "Pinnacle PCTV Stereo" (card=26), and kernel 2.6.8.1. Composite, and S-Video inputs are working well (picture and sound). But TV input is bad. I have the TV picture, but sound is not working properly: At start of the application, and after each channel change, it's always the same: 1- Sound is there for about 2 seconds. 2- I hear a low-frenquency "bomp" in the speaker (like a fast beat on a very-low-pitched drum). 3- White noise only... 4- ... with the normal sound slowly and faintly coming back, mixed with the noise, then fainting again to non-existence, and so on. I would describe it so: normal ----------| | | | | /---\ /---\ | /---/ \---\ /---/ \---... zero |/ \---/ / 0. 1. 2. 3. ... seconds I tried seeing the debug output, but everything seems OK. One last important thing: the problem can be heard even by connecting the output of the TV card directly to the HiFi, instead of to the sound-card's LineIN or CD. So it shouldn't be an ALSA problem, but rather a saa7134, or tuner, or tda9887 problem. Please help! It's so frustrating, hearing sound and then not; because I *know* sound can be heard. It maddening. Yves. Edited November 24, 2004 by theYinYeti Quote Link to comment Share on other sites More sharing options...
devries Posted November 25, 2004 Report Share Posted November 25, 2004 http://www.gossamer-threads.com/lists/myth...=saa7134;#88965 Acoording to this it has something to do with full duplex (ie not able to record and play at the same time). So it is hardware related. Try a different soundcard. Good luck. Quote Link to comment Share on other sites More sharing options...
theYinYeti Posted November 26, 2004 Author Report Share Posted November 26, 2004 Thanks devries for replying, and searching. But that's not the problem. I use Xawdecode to watch TV, and there's no recording involved. I just watch TV with sound (!me mad!), and then no sound anymore BTW, I tried kernel 2.6.9 with bytesex.org's All-...-2.6.9rc4 kernel patch, and nothing changes... Yves. Quote Link to comment Share on other sites More sharing options...
theYinYeti Posted January 3, 2005 Author Report Share Posted January 3, 2005 I partially solved the problem by getting back to kernel 2.6.7. Now I have sound OK on channels # 2, 3, 5, and 6. But the problem is still there with channels # 1, and 4 (and sometimes 2). The problem seems to be with a bad detection of the TV sub-standard (variant of SECAM), when signal is not perfect. So, is there a way to force the substandard, for example to SECAM-L? Yves. Quote Link to comment Share on other sites More sharing options...
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