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. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> <hop> kb: I demand integrity and honesty in those who i do business with <hop> i know my demands are unreasonable, but a guy can dream, can't he? A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens.
