All kinds of "internal" playback (aplay, Alsaplayer, xmms, ...) produce a periodic, heavily distorted sound on all of the 6 PCM Outs and 2 S/PDIF Ins, when routed to H/W Out 1/2. It sounds somewhat like a bad feedback loop.I had similar problems with my Terratec DMX6fire. I tried both the patch from the ftp area and also simply copying the files from alsa-driver to the kernel tree as described in the wiki. All I got was either a random periodic loop as you describe, or absolute silence which might also have been looped :). There are no errors whatsoever, all alsa programs seem to run fine, except for the actual sound ouput. I am running gentoo on an Abit KR7a-Raid with Athlon 1800+ , currently trying kernel 2.6.1 with the alsa-kernel-dir from 1.0.1.
Now I gave kernel 2.6.1 (vanilla) and alsa 1.0.1 a try. Result:thats exactly my situation, but...
No problems with compilation and installation of the driver (of course after kernel compile and reboot), but same constant noise.
Strange enough, as before: After starting the new driver, but _before_ another reboot, all is well.
Unloading all modules with '/etc/init.d/alsasound stop', then recompiling alsa-lib and restarting alsa seems to solve this issue for me until the next reboot. This doesn't make it any less strange for me, but at least its a workaround.
gruss, Steffen
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