Hello everyone. I've just recently upgraded my FC2 laptop to FC3 and to my dismay the PCM playback (xine, xmms, aplay) all produce staticy sounds. I've googled on the subject and tried the following to correct it: (As an aside sound in FC2 was spotty on this same machine ... however during it's life time, and several kernels the sound did work at one point, it always worked on FC1). *) Made sure that my volumes aren't muted etc. I hear the sound, it's just horrid. *) Added commands to /etc/modprobe.conf so that the sound levels were saved and restored ... that appears to work. *) I think I've disabled the mysterious IEC958 device that everyone mentions needs to be turned off (I think that's it). The machine has a Yamaha chipset in it which displays as: Vendor: Yamaha Model: Corporation YMF-744B [DS-1S Audio Controller] Module: snd-ymfpci This is in Gnome. Sound doesn't work (for PCM) in Gnome or KDE same issue - crackling sound). *) The modules appear to have loaded. lsmod displays tons of snd-* modules etc. *) I tried setting up a /etc/asound.conf file so that it could 'duplex' sounds being played over the PCM channel (this was off the ALSA website). *) I've tried to get sound working in Xine by switching the backend that it uses (to no avail). I've also tried, under KDE, to change the Gstreamer settings for the sink and source ... to no avail. *) With this kernel I have typically had to set in /etc/grub.conf acpi=off - not sure if that's messing things up. I removed that and tried again but it didn't seem to help. Where can I go for further information? Can I upgrade some packages? I guess what I'm confused about is that CD playing works great (crystal clear). PCM playback ... just crackles and hisses. Any help would be greatly appreciated. Thanks! If this has been dealt within the archives just point me to the link so that I can read about it. I've tried searching but haven't really run across this same issue (nor solved it with any of the advice that I found). cheers ian
