[BRLTTY] Brltty woes on Centos 7

[Dave Mielke]

[quoted lines by Keith Wessel on 2017/03/02 at 22:33 -0600]

>With the screen driver logging patch in place, the error I now get looks
>like this:
>
>Mar 02 22:28:23 brltty[982]: console control error 5: fd=10 vt=1 op=0X5603:
>Input/output error
>
>Does that help at all?

Yes, very much so. Starting in brltty 5, the event loop (which is no longer a 
loop) is interrupt driven. In your case, brltty is starting so early that the 
Linux screen driver isn't able to find anything to grab onto in order to 
monitor for changes to the screen. This is nothing that a simple scheduled 
retry can't fix, so I'll definitely be looking into it. It's just an 
unanticiapated situation.

As I recall, though, you were having a second problem, as well, which had 
something to do with braille display communication. Would you mind to please 
describe it again, and is your braille display connected via serial or USB?

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