Hi! > > >> 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: > > > > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=110ea1d833ad > > > > Oh, I didn't realize it got merged already, I thought this was > > related... > > > > So we've already replicated the backlight sysfs interface problem for > > privacy screens. :( > > I guess... although the Thinkpad code hasn't added any standard > interfaces (no other laptop should be placing controls for a privacy > screen in /proc/acpi/ibm/... ). Maybe its not too late. There's new interface for controlling privacyguard... but perhaps we need better solution than what went in 5.4. Perhaps it should be reconsidered? Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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