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Date:      Tue, 02 Sep 2008 01:01:28 +0300
From:      Alexander Motin <mav@FreeBSD.org>
To:        rmgls@free.fr
Cc:        freebsd-multimedia@freebsd.org
Subject:   Re: volume & interrupted sound
Message-ID:  <48BC6638.3030506@FreeBSD.org>
In-Reply-To: <20080901053923.6321D19772@smtp6-g19.free.fr>
References:  <20080901053923.6321D19772@smtp6-g19.free.fr>

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rmgls@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.

-- 
Alexander Motin



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