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SubjectRe: New sysfs interface for privacy screens
On Tue, 1 Oct 2019 10:09:46 -0600
Mat King <> wrote:

> I have been looking into adding Linux support for electronic privacy
> screens which is a feature on some new laptops which is built into the
> display and allows users to turn it on instead of needing to use a
> physical privacy filter. In discussions with my colleagues the idea of
> using either /sys/class/backlight or /sys/class/leds but this new
> feature does not seem to quite fit into either of those classes.

FWIW, it seems that you're not alone in this; 5.4 got some support for
such screens if I understand things correctly:


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