Bug#753797: braille display incorrectly refreshed e.g. at tty change

[Shérab <Sebastien.Hinderer@ens-lyon.org>]

Hi,

Samuel Thibault (2014/08/21 02:25 +0200):
> Just for the record.
> 
> Sebastien Hinderer, le Sat 05 Jul 2014 09:51:29 +0200, a écrit :
> > The content of the braille display is not always refreshed correctly.
> 
> AIUI, this is a bug which is specific to the driver you are using, which
> is being rewritten to cope with the new BRLTTY event model?

There were actually several bugs. A few of them were indeed
driver-specific, but at least one other was not and does still need to
be fixed upstream. It really concerns braille display update at virtual
console switch and is due to the fact that switching the virtual
consoleand updating cursor position is not an atomic operation, at the
kernel level. This confuses brltty.

Shérab.