I am working on a kiosk powered by RaspberryPi 4, and I have a problem when the pi is running with a DVI/VGA adapter.
The issue is that monitor is that the monitor goes to sleep during the night: I manually set blanking mode using
DISPLAY=:0 xset +dpms && DISPLAY=:0 xset s blank, and at the time of "wake up", I set it on using
DISPLAY=:0 xset -dpms && DISPLAY=:0 xset s noblank.
Everything works fine with HDMI displays, but suddenly it stopped working with the display attached with a Micro HDMI/DVI adapter.
Even manually forcing display on using
xset s reset && xset dpms force on does not works.
If I check the status with
xset I got:
Screen Saver: prefer blanking: no allow exposures: yes timeout: 0 cycle: 600 Colors: default colormap: 0x20 BlackPixel: 0x0 WhitePixel: 0xffffff Font Path: /usr/share/fonts/X11/Type1,built-ins DPMS (Energy Star): Standby: 600 Suspend: 600 Off: 600 DPMS is Enabled Monitor is On
And the display is correctly powered up, checked using
The screen remains in sleep state and won't turn on.