HyperPixel no backlight?

@povezi wrote:

Hi, I have fresh retropie installation on Rpi2.
installed using script HyperPixel, and I can see text but hardly (backlight is not turned on)

tried this:

root@retropie:/home/pi# echo “0” > /sys/class/backlight/rpi_backlight/brightness
root@retropie:/home/pi# cat /sys/class/backlight/rpi_backlight/brightness
0
root@retropie:/home/pi# echo “1” > /sys/class/backlight/rpi_backlight/brightness
root@retropie:/home/pi# cat /sys/class/backlight/rpi_backlight/brightness
1

but no luck :(

chould I somehow additionally enable backlight?

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