[pulseaudio-discuss] Need help with audio gain on an Intel HDA equipt ASUS M2N-SLI Deluxe
gheskett at wdtv.com
Thu Jan 16 09:17:01 PST 2014
On Thursday 16 January 2014 12:08:37 Alexander E. Patrakov did opine:
> Gene Heskett wrote:
> > Master and PCM, and those are apparently not slaved to the little
> > indicator applet that pops up with a horizontal slider at the top of
> > the screen when I hit the mute, vol-down and vol-up buttons in the
> > top edge of the keyboard. all 3 effect but the alsa sliders were and
> > are now, wide open.
> Sorry, this can't be the full story. Your alsa-info file says that you
> also have a Front control and a Headphones control. If none of these
> has any effect, it is a bug. Please try moving all controls up and down
> with arrows, including the controls that are past the right border of
> the initial alsamixer window.
I am fairly familiar with alsamixer. I tried every slider for effect. Some
switched modes or i/o jacks, without effect. I had an F5 in effect, so it
was about 2x the screen width on this 1920 wide monitor. Lots & lots of
knobs with no audible effect.
> > > Here is a 60 Hz sine wave for your tools:
> > >
> > > speaker-test -t sine -f 60 -c 1 -p 100000 -P 4 -F S16_LE
> > This seriously doubles in these small speakers, but is otherwise
> > clean. Says its left front, reporting periods in values straddling
> > 3.0, seems to run forever so I ctl+c'd it after about 90 secs.
> Yes, that's what it normally does.
> > The -F S16_LE is not described in my man page, what does this do?
> It selects the S16_LE as the sample format. This is a signed (S) 16-bit
> format, so two bytes per channel. LE means that the least significant
> byte comes first. This is just to prevent the fallback to U8 or
> something else equally strange. The -F option itself, as well as the
> list of recognized formats, is described in "speaker-test --help"
> output and is indeed missing from the manpage.
A bug, in the docs? good heavens, how did that happen? ;-)
But how do you convince a distro to update a man page? In my experience it
cannot to done.
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