[BRLTTY] Brltty woes on Centos 7

[Keith Wessel]

Thanks, Dave. I'll tinker some more on Monday and report back.

But this sounds like a system issue and not a brltty 5.4 issue, or at least
not something that needs to be coded around. Only the console interrupt
issue is something I'll await a fix for from you all.

Thanks for all the help,
Keith


-----Original Message-----
From: BRLTTY [mailto:brltty-bounces at brltty.com] On Behalf Of Dave Mielke
Sent: Friday, March 03, 2017 11:00 PM
To: Informal discussion between users and developers of BRLTTY.
<brltty at brltty.com>
Subject: Re: [BRLTTY] Brltty woes on Centos 7

[quoted lines by Keith Wessel on 2017/03/03 at 22:18 -0600]

>I assume brltty does some autodetecting of baud rate when it's initializing

>the braille display. Is that true? 

It depends on the device. In general, the driver knows which bauds it's able
to 
use for the models it supports.

>Do you know if the Power Braille does auto-detect or if it insists on
19,200?

The Power Braille can operate at either 9,600 or 19,200 baud. The driver
tries 
first at 9,600, and then at 19,200. If it works at 9,600, then it tells the 
device to switch to 19,200, and then uses that.

>I'm also open to suggestions how I might go about finding out what's
>changing my baud rate. I'll start browsing through the system units that
are
>enabled; one of them must be the trouble maker.

It may not be there. I know that when I connect a USB to serial adapter, the

first thing I observe is a modem probe. My guess is that udev is doing it,
but 
I've never checked to be sure. In any event, you'll notice, in the systemd 
dependency rules I sent you, that they now wait for udev to settle. That
should 
be sufficient.

-- 
Dave Mielke           | 2213 Fox Crescent | The Bible is the very Word of
God.
Phone: 1-613-726-0014 | Ottawa, Ontario   | http://Mielke.cc/bible/
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