[BRLTTY] redirect braille display to virtual machine

Aura Kelloniemi kaura.dev at sange.fi
Sat Mar 21 07:41:32 UTC 2026


Hi,

I have only used VMs in curses/TTY mode, exactly because of this issue, so I
may misunderstand the problem domain.

On 2026-03-20 at 18:32 +0100, Samuel Thibault <samuel.thibault at ens-lyon.org> wrote:
 > Paul Scott, le ven. 20 mars 2026 12:09:07 -0500, a ecrit:
 > > Mabey forward the brlapi address from Linux to windows? Abd connect
 > > brapi to the shared address.

 > That is technically possible, yes, but the essential problem that
 > remains is to switch automatically as needed. The libvirt-native case is
 > the same question, so better fix it that way.

I have never tried, but I assume that controlling BRLTTY (or something else)
with an emulated Baum display would be very difficult and limited (especially
because Baum displays are the ones which only a few keys). Therefore I would
really appreciate if there would be a way to pass BrlAPI through the VM
boundary – that would allow using my existing bindings on the guest side and
allow raw access to my host display. Of course this requires that there is a
BRLTTY instance on the guest side, but that is going to be my use case anyway.

I'd actually want to run DOS guests which would require either a working
network stack in DOS or BrlAPI over serial port (or something similar).

-- 
Aura


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