KEEP backlight off + LCD on with cursor/keyboard input
Posted: Thu Sep 10, 2020 1:35 am
I'm trying to keep my backlight off but the LCD on even though inputs are coming from the keyboard and/or trackpad.
I'm working on an Asus Aspire One running Linux Mint (32bit). I've just installed a Pixel Qi display that allows viewing in sunlight through a reflective display (think: epaper).
The Fn+F6 native shortcut effectively turns off the backlight, but any input reactivates the screen.
I've tried a few things already: • xbacklight only dims the screen, and even at 0 or neg' values won't turn the backlight OFF. • i've tried a handfull of commands that turn the screen off, but they either turn the LCD itself off requiring the inverse command, or they still get woken by any peripheral input. • I've tried "echo" to change the brightness value in the /sys.../backlight/brightness file but even with sudo or su- i get "access denied"
I have a sense this is more power management/sleep setting than backlight. Basically need to tell the computer NOT to turn the backlight back on with the inputs.
I'm working on an Asus Aspire One running Linux Mint (32bit). I've just installed a Pixel Qi display that allows viewing in sunlight through a reflective display (think: epaper).
The Fn+F6 native shortcut effectively turns off the backlight, but any input reactivates the screen.
I've tried a few things already: • xbacklight only dims the screen, and even at 0 or neg' values won't turn the backlight OFF. • i've tried a handfull of commands that turn the screen off, but they either turn the LCD itself off requiring the inverse command, or they still get woken by any peripheral input. • I've tried "echo" to change the brightness value in the /sys.../backlight/brightness file but even with sudo or su- i get "access denied"
I have a sense this is more power management/sleep setting than backlight. Basically need to tell the computer NOT to turn the backlight back on with the inputs.