Hello,
There is a problem with alsa-driver with versions >=
0.9.7 on my card SIS7012; the last working version was
0.9.6. All further versions have too fast playback,
and sending option "ac97_clock=48000" does not change
anythin. Actually, it does changes, but not that I
expected - playback is still fast, but with low
quality if one sends a low value, say
"ac97_clock=8000".
Comparison of 0.9.7 (first non-working) against 0.9.6
(last working) reveals that a slightly differnt
interrupt handler was used ("snd_intel8x0_update" in
alsa-kernel/pci/intel8x0.c). It turns out that seting
variable "step=1" right before "ichdev->position +=
step * ichdev->fragsize1" solves the problem, and
driver work fine. This also work with the latest
realese, that is alsa-1.0.1.
I am not a driver developer and have no idea what is
the problem, but it would be great if this can be
fixed in all future versions of alsa.
Regards,
Evghenii Gaburov
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