[BRLTTY] Again: silent key echo

[Hermann]

I've checked the archive, and I saw that only the attachment is shown
there.
In case you missed my text before the attachment, I'll repeat it:

Hi,
till now I couldn't resolve the problem regarding the silent key echo
after upgrading my system.
I've created a debug file, which I attach; hope it is allowed.
I performed repeated typing of characters, and I hope that this action
has been logged.
Hermann