[BRLTTY] how to start and stop brltty

[John Covici]

I think the usb rules are being executed, the problem seems to be with
the brltty at .service.  I am not sure why its not working, it claims it
can't execute /libexec/brltty/systemd-wrapper, but I can do it
manually, so I have no clue.

On Mon, 22 Feb 2021 01:44:03 -0500,
Didier Spaier wrote:
> 
> Because simple is not funny, John :D
> 
> As an aside I have also an issue with 6.3 in Slint, people can't
> get brl through
> orca at boot, they have to first kill the daemon with a signal 9 (15 doesn't
> work). I have a power user testing to investigate further right now (I am
> sighted, do not read Braille and don't have display anyway). Not
> using systemd
> in Slint so could be a completely unrelated issue though. But i
> suspect USB is
> involved as if I start brltty -b tt -d /dev/tty2 I do get the
> expected output
> in /dev/tty2.
> 
> Best,
> Didier
> 
> Le 22/02/2021 à 07:18, John Covici a écrit :
> > A bit more information, both pcspkr and uinput are loaded, so I don't
> > know why those modprobes are failing and unplugging and replugging the
> > braille device does not do anything.
> > 
> > I think it keeps trying to start a braille device instance, but its
> > always failing, not sure why.  It seems to be unable to execute
> > /libexec/brltty/systemdd-wrapper, but its there.  Very strange.  Why
> > is this so complicated?
> > 
> > 
> > On Sun, 21 Feb 2021 22:35:18 -0500,
> > Dave Mielke wrote:
> >> 
> >> [quoted lines by John Covici on 2021/02/21 at 15:58 -0500]
> >> 
> >>> Also, looking at the only service unit, it says RefuseManualStart=true
> >>> so I seem to have no way to just say systemctl start brltty
> >> 
> >> Okay, I understand your question, now. If you really want to just start brltty
> >> then start the brltty.path unit.
> >> 
> >> Just starting brltty, these days, isn't necessarily the right thing to do. This
> >> is because udev also starts brltty. If you don't have brltty's udev rules then
> >> just starting brltty is okay. If, however, you do have them then you should
> >> configure the general brltty to not look for USB devices. An easy way to do
> >> this would be to have this line in brltty.conf:
> >> 
> >>     braille-device bluetooth:
> >> 
> >> By the way: It's often handy to check the description within a systemd unit
> >> file. The brltty.path unit contains this line:
> >> 
> >>     Description=Default BRLTTY Instance
> >> 
> >> -- 
> >> I believe the Bible to be the very Word of God: http://Mielke.cc/bible/
> >> Dave Mielke            | 2213 Fox Crescent | WebHome: http://Mielke.cc/
> >> EMail: Dave at Mielke.cc  | Ottawa, Ontario   | Twitter: @Dave_Mielke
> >> Phone: +1 613 726 0014 | Canada  K2A 1H7   |
> >> 
> > 
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-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici wb2una
         covici at ccs.covici.com