On Tue, Dec 2, 2025 at 5:36 AM Dmitry Osipenko <[email protected]> wrote: > > Add `/sys/power/lps0_screen_off` interface to allow userspace to control > Display OFF/ON DSM notifications at runtime.
Why? > Writing "1" to this file triggers the OFF notification, and "0" triggers the > ON notification. > > Userspace should write "1" after turning off all physical and remote > displays. It should write "0" before turning on any of displays. This sets a limitation on the correct/expected usage of this interface. How can the kernel ensure that the limitation is taken into account? In principle, it should not allow OFF to be triggered if any displays are "on", for example. And what exactly do you mean by "turning off a display". Cutting power from it or something else?
