Post #2184379
2026-04-22 22:16 UTC
Can that not be done with LCDs and OLEDs? Turn off the backlighting at least?
Replies (2)
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@Quetzalcutlass@lemmy.world 2026-04-23 16:40
On my old phone I wrote an app to write screen brightness values directly to the underlying Linux device. It bottomed out at either 3 or 5, which was still way below what the normal brightness slider allowed but it seems there's a hardcoded non-zero lower limit.
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@HubertManne@piefed.social 2026-04-23 02:50
I guess they can. I can with my current laptop but im sure I have had some that won't go below a certain low leve but could do it with mine. Im not sure modern ones would keep the setting on restart of the pc or screen though. With the old crts they would stay blank until you moved the little dial that a lot of people were unaware of.