On Sat, 2001-11-03 at 21:53, Josh Green wrote: > I just changed the motherboard in my computer from a K6-2 550 with VIA > Apollo chipset to a P3 533 with Apollo MVP3/Pro133x chipset. I'm now > experiencing a chirping sound in audio playback and other artifacts. It > seems to be directly related to IDE hard disk access. I did a test write > like so "head -c 100000000 /dev/zero >test.dat" to write 100 MB of zero > data to a file. The chirping sound completely took over the audio sound > and my MP3 playing in the background was no longer distinguishable until > the write was done. Has anybody else experienced this problem or have > any ideas of what could cause it. I'm using ALSA CVS as of a week ago > IIRC.
Just wanted to add that it appears to be a DMA related problem. If I disable DMA on my hard disk (hdparm -d 0 /dev/hda) the problem goes away. Does the SB Live use DMA, and how can I figure out which channel it uses. Its been a while since I knew the ins and outs of a sound blaster card, and that was back when SB 2.0 was what I had and I coded in DOS. I know very little about PCI and how data gets between the card and computer memory, etc. If someone could enlighten me in this area I would appreciate it, maybe just a pointer to some docs on the SB Live hardware. Cheers.. Josh Green _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
