PINE64
Disable HDMI Pine64 - Printable Version

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+---- Thread: Disable HDMI Pine64 (/showthread.php?tid=7102)



Disable HDMI Pine64 - Andruxa89 - 01-28-2019

Hello everyone! 

How can i completely disable (periodically, by cron) HDMI port on Pine A64?
Whats command?
It's needed for completely disabled monitor (picture and backlight).

kernel - 3.10.105-bsp-1.2-ayufan-77

- "DISPLAY=:0 xset dpms force off" blanking picture only, but not turning off backlight
- sunxi tools changes screen resolution only, but not power manage.
- "echo 0 > /sys/class/backlight/lcd0/bl_power" doesn't work

Pls help, Thnx)


RE: Disable HDMI Pine64 - martinayotte - 01-31-2019

(01-28-2019, 04:29 AM)Andruxa89 Wrote: but not turning off backlight

According to Pinebook schematic, the LCD power is controlled by GPIO PH6, so you can turn it off using :


Code:
echo 230 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio230/direction
echo 0 > /sys/class/gpio/gpio230/value

and you can turn it on again with :


Code:
echo 1 > /sys/class/gpio/gpio230/value

EDIT : Ouupps !!! I didn't read the title properly, you were talking about HDMI on Pine64, while my reply is about Pinebook LCD ... Sorry !