trinity-users@lists.pearsoncomputing.net

Message: previous - next
Month: July 2018

Re: [trinity-users] today's immature bothersome question

From: Gene Heskett <gheskett@...>
Date: Tue, 3 Jul 2018 08:50:32 -0400
On Tuesday 03 July 2018 07:42:28 Mike Bird wrote:

> On Tue July 3 2018 03:13:12 Gene Heskett wrote:
> > > > > > (1) Please use speaker-test before login to determine
> > > > > > whether ALSA works before login.  Make a note of which
> > > > > > speakers it finds.  Can you hear them all?  ctrl-C to stop
> > > > > > it when you get bored.
> >
> > And just how do I accomplish that when no one is logged in? I've
> > tried /path/to/aplay /path/to/file in /etc/rc.local and its as if
> > its ignored.  There are other things in rc.local that do get done.
> > Not there now as I took it out when it didn't work.
>
> You can ctrl-alt-F1 and login to a terminal.  alt-F7 (or something
> close to that depending on your configuration) to return to TDM login
> screen.

I do that so seldom, I had forgotten I could.  Its been years, literally.

> If aplay doesn't work in rc.local and other things do work in
> rc.local, what makes you think that ALSA works before logging in to
> TDE?

I can hear the background noise of the sound system when it has no input. 
That comes on when the boot log is only about half done with a pretty 
obvious thump in the speakers. So I have to assume the sound is usable 
at that point, but goes away as x starts.

Don't forget that I have 50 some years in as a broadcast engineer, and I 
notice such things and connect the dots a lot easier than most. My ears 
at my age aren't great, carhart notches at 4 khz are 140 db deep, but 
voice frequencies are good yet. As are crickets amazingly. I wore out a 
couple 30-06 barrels before they started selling decent earmuffs in the 
1960's. That will give anybody carhart notches.

> The speaker-test will tell us whether ALSA is working before TDM
> login.

I'll do that next time I reboot. My system is simple stereo, left and 
right only, but I expect the man page will tell me how to test both 
sides.  Thanks for the reminder.

> > > > > > (2) What precisely tain't there?

Sound of any kind. Even the beep of incoming email is silent until I do 
the alsactl restore thing.

[...]

-- 
Cheers, Gene Heskett
--
"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>