>> Now, the fun part; every sound begins loud (or should I say at a
>> normal level) and then is almost imediately attenuated, resulting in
>> annoyance and really low volume in general. With dmasound-pmac the
>> volume used to be a lot louder and didn't had this kind of issues.
>
> Sounds like DRC. Disable it or yank up its range with a mixer app.
>
>
I use "alsamixer" to turn off DRC. But each two reboots I need to turn
it off again, because the system reboots with DRC on. Do you have the
same problem?