[BRLTTY] BRLTTY appears severely broken

[Alexander Epaneshnikov]

Hello!

this change was done by systemd in commit https://github.com/systemd/systemd/commit/a4d1891475

I pushed fix to archlinux brltty package
https://gitlab.archlinux.org/archlinux/packaging/packages/brltty/-/commit/fcb9ae5937575e1df759db92fc828ed76c7586eb

On Wed, Nov 12, 2025 at 06:12:55AM -0600, Rob Hudson wrote:
> I have a hack in place.
> /etc/udev/rules.d/99-brltty.rules
> SUBSYSTEM=="tty", KERNEL=="tty[0-9]*|hvc[0-9]*|sclp_line[0-9]*|ttysclp[0-9]*|3270/tty[0-9]*", GROUP="tty", MODE="0620"
> Then
> udevadm control --reload-rules && udevadm trigger
> This fixed all the problems.
> ----- Original Message -----
> From: Aura Kelloniemi <kaura.dev at sange.fi>
> To: "Informal discussion between users and developers of BRLTTY." <brltty at brltty.app>
> Date: Wed, 12 Nov 2025 12:28:29 +0200
> Subject: Re: [BRLTTY] BRLTTY appears severely broken
>
> > Hi Rob,
> >
> > On 2025-11-12 at 03:42 -0600, "Rob Hudson" <rob_hudson_3182 at gmx.com> wrote:
> >  > I added those lines to the brltty.conf file. Unplugged my display. Killed all brltty processes. Replugged the display and tried to get into a console. Unplugged display, re-killed all processes. No log file was created. The path I used was /var/log/brltty.log
> >
> > BRLTTY cannot write to /var/log as it is running under an unprivileged user.
> > You need to put the log file to /tmp/ or some other directory where the
> > `brltty` user has write permissions.
> >
> > Your original problem, by the way, most likely is that BRLTTY does not have
> > access to /dev/tty0. It is a permissions problem.
> >
> > As far as I understand, Arch has not changed anyghing, it is Linux kernel
> > itself that has changed default permissions of /dev/tty devices.
> >
> > You can try running your Arch with linux-lts kernel package to try to confirm
> > my theory.
> >
> > There is a fix already in BRLTTY's git repository. It fixes this.
> >
> > --
> > Aura
> > _______________________________________________
> > This message was sent via the BRLTTY mailing list.
> > To post a message, send an e-mail to: BRLTTY at brltty.app
> > For general information, go to: http://brltty.app/mailman/listinfo/brltty
> >
> _______________________________________________
> This message was sent via the BRLTTY mailing list.
> To post a message, send an e-mail to: BRLTTY at brltty.app
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--
Sincerely, Alexander