I previously reported that i was experiencing noise on the
adat channels (on a digi96) of devices defined as such:
(This was with alsa-lib 0.9 beta8a)
pcm.adat {
type "hw"
card "digi96"
device 1
}
pcm.adat12 {
type plug
slave.pcm adat
ttable.0.0 1
ttable.1.1 1
}
pcm.adat34 {
type plug
slave.pcm adat
ttable.0.2 1
ttable.1.3 1
}
...
Yesterday was committed alsa-lib/tests/pcm.c, which i modified to
open 8 channels instead of one..
when ran on pcm.adat, the sound is a pure sine, while running with
the adat12, adat34, adat56 devices is consistently presenting the
mentionned clicks.
As another test i ran that test program against:
pcm.adat_plug {
type plug
slave.pcm adat
}
This one worked flawlessly, as the pcm.adat (hw) device.
So It seems something in the use of ttables introduces those
clicks.
Another bug i (painfully) noticed:
If I run a program like xmms on the digi96, through the
oss emulation, starting the test program against the adat
device makes the machine lock hard.
-Nicolas Leveille
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