[orca-list] Accessibility of light-dm and replacing gdm3 with it

[Vsevolod Popov <sevapopov13 gmail com>]

Hello everyone,
Recently I installed Ubuntu 20.04 lts release on my laptop.
I installed the standard gnome edition due to the fact of issues with 
Ubuntu mate installer.
I replaced gnome with mate, but I have questions about login manager.
When I set the login manager to light-dm, orca doesn't speak there.
Key combinations like alt+super+s don't enable it.
Is it possible to make light-dm manager usable with orca?
I would like to replace gdm3 with light-dm because I cannot change 
orca's preferences on logon screen in gdm3.
Ins+space key combination doesn't do nothing there.
Thank you.

--
Best regards,
Vsevolod
https://github.com/sevapopov2