Bug#874054: Setting QT_LINUX_ACCESSIBILITY_ALWAYS_ON=1 has a huge negative performance impact, should not be always on

Sebastian Humenda shumenda at gmx.de
Sat Sep 2 14:18:16 UTC 2017


Lisandro Damián Nicanor Pérez Meyer schrieb am 02.09.2017, 11:02 -0300:
>According to [upstream] setting QT_LINUX_ACCESSIBILITY_ALWAYS_ON=1 has a
>huge negative performace impact on Qt, so it should not be enabled by
>default. And, if I understand correctly, this is the current behavior.
>Upstream suggested that maybe we should try to only set this variable if
>the appropriate hardware is found. Do you have any ideas on how we could
>achieve this?
This is not a good idea, because not all screen reader users have dedicated
hardware. Users only using speech for navigation would be without Qt a11y.
Couldn't we detect whether a screen reader (Orca) is installed, or is this a
default on Desktop systems, these days?

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