Dear Mr Mielke,
I wish you good Saturday morning.
Here is procedure to reproduce The USB Braille device issue on Brltty
Use Brltty and when system do not send data to Braille device,
Try to use Talkback as normally for several minutes. You should get
warning from Android System UI, Brltty has stop working. Sure, Brltty
must be enabled from Accessibility dialog window as The accessibility
App will be terminated.
You can also turn display on and off when device have been disconnected.
I Am using Android 6.0 with latest stable updates.
I will also contact Lenovo corporation today since they have
incorporated new feature to their Android release. In The accessibility
settings, there is special function, enable fast Startup. It is
something like hybernate function in Windows.
After using this function and when I turn on The tablet, Brltty also
stop to work. Even if Tieman Braille Voyager is connected to USB port.
I hope, that Lenovo will inform Me, which programmers techniques must
every developer make so this app will work after turning on The device
when it have been turned off after enabling The feature enable fast
startup in The accessibility dialog Window.
But this will be complex and it will depend, if Lenovo will have good
will to inform me or other developers about their feature and how to
make app which will be compatible with this.
Using this function has big advantage. User can turn off The tablet and
it will be active after several seconds. It also depend on, if it is
official feature which is build inside Android 66.0 kernel, or if it is
specific Lenovo kernel Module or path.
This message was sent via the BRLTTY mailing list.
To post a message, send an e-mail to: BRLTTY@brltty.com
For general information, go to: http://brltty.com/mailman/listinfo/brltty