volume & interrupted sound
mav at FreeBSD.org
Mon Sep 1 22:01:45 UTC 2008
rmgls at free.fr wrote:
> 1. The sound volume here is lower than with the original driver.
> (at any mixer level). is it a way to increase it?
> it is always on a sony s5 vaio.
It's hard to say what difference with original driver.
Playback volume may depend on:
- pcm and vol mixers,
- ogain mixer which controls external amplifier power on/off
(sometimes it may be inverted),
- GPIO pins.
On some systems GPIO pins control external amplifiers, but it is
absolutely vendor specific and not software detectable. You can play
with GPIOs using hint.hdac.%d.config device hint (look man snd_hda).
> 2. the sound is regularly interrupted. i suspect an interruption problem.
What you mean exactly by "regularly interrupted"? How often and for how
long? If you expect interrupt conflict - todays patch version should
support polling operation (without using interrupts) good enough.
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