[BRLTTY] Braille keyboard

[Lars Bjørndal]

I will ask a question on behalf of an acquaintance. She's running Ubuntu
22.04.5 LTS with BRLTTY version 6.4, and has a Brailliant BI20X display.
Her problem is that she isn't able to use the braille keyboard for
input, neither in the terminal, nor in GUI. Also, she had to start
BRLTTY manually.

I told her to do `sudo systemctl enable brltty` from the terminal and restart.

Then BRLTTY started automatically, but she is still not able to use the
keyboard.

I asked her to send me output from `brltty --version`, and here's the
content:

BRLTTY 6.4 rev BRLTTY-6.4 [https://brltty.app/]
brltty: Log Level: none
brltty: Messages Locale: nb_NO.UTF-8
brltty: Messages Domain: brltty
brltty: Messages Directory: /usr/share/locale
brltty: Autospeak Threshold: none
brltty: Privilege Parameter: path=
brltty: Privilege Parameter: scfmode=
brltty: Privilege Parameter: shell=
brltty: Privilege Parameter: user=
brltty: can't isolate namespaces
brltty: executing as the invoking user: elisabeth
brltty: can't set supplementary groups
brltty: group not joined: 0(root)
brltty: group not joined: 5(tty)
brltty: group not joined: 20(dialout)
brltty: group not joined: 29(audio)
brltty: group not joined: 107(input)
brltty: group not joined: 133(pulse-access)
brltty: required capability not granted: cap_sys_admin (for injecting
input characters typed on a braille device)
brltty: required capability not granted: cap_sys_tty_config (for
playing alert tunes via the built-in PC speaker)
brltty: required capability not granted: cap_mknod (for creating
needed but missing special device files)
brltty: Copyright © 1995-2021 by The BRLTTY Developers
brltty: BrlAPI Server: release 0.8.3
brltty:    Copyright (C) 2002-2021 by Sébastien Hinderer
<Sebastien.Hinderer at ens-lyon.org>, Samuel Thibault
<samuel.thibault at ens-lyon.org>

Do you have any idea on how she can reach her goal?

Thanks, Lars