piPlayer wrote: 
> In the past i spended some time to that problem and i cant find a
> solution. I think there is no way to control the backlight of that 
> cheap displays. The controler chip is direct wired to 5V and has no
> backlight pin. The hdmi versions of the waveshare displays have a
> mechanical backlightswitch. For that ones you can found tutorials for
> switching off the backlight via gpio.
I've asked the vendor, and he answered:
> Unfortunately, the backlight can't be switchd off, but you can put the
> display into standby mode in order to reduce power consumption when
> running on battery power.
> Please have a look at:
> https://wiki.archlinux.org/index.php/Display_Power_Management_Signaling
I'm far from being an expert, but I suppose that this only applies when
the display is used wit an x server?
Perhaps somebody has more knowledge than me to evaluate this?
Best regards
Martin



PCP (always latest version) on RasPi 3 with PhatDac (player & server)
PCP on several RasPis 2 +3
2 Airplay speakers (Sony SA-NS510) integrated via Airplay Bridge Plugin
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