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+--- Thread: Screen Power Consumption Brightness=0 vs Turn off (/showthread.php?tid=13932)
Screen Power Consumption Brightness=0 vs Turn off - somefoo - 05-19-2021
Heya
I have a question regarding the power consumption of the screen on the Pinephone. I was under the impression that if the screen brightness is 0 that the power consumption of the display should be very low. But there seems to be a huge difference between turning the screen off and setting the brightness to 0. Could someone explain this to me? I understand that while the screen is on and the brightness is 0, we still are still drawing, but I don't expect that to cost 0.5w. I don't know much about display technologies and the hardware behind getting them running, but I would appreciate an explanation.
0.90w: xrandr --output DSI-1 --off (OR xset dpms force off OR xset dpms force standby OR however you want to turn of the screen
)1.44w: echo 0 > /sys/devices/platform/backlight/backlight/backlight/brightness
1.49w: echo 100 > /sys/devices/platform/backlight/backlight/backlight/brightness
1.51w: echo 200 > /sys/devices/platform/backlight/backlight/backlight/brightness
2.08w: echo 600 > /sys/devices/platform/backlight/backlight/backlight/brightness
Many thanks
