I have the strangest problem i have not been able to solve for days now.
I am using 2.2 external pir.py script and it works flawlessly to display blank screen.
However, if screen orientation set to vertical via /boot/config.txt with either display_rotate=1 or 3, the monitor wont blank out !!
Its just blink for 1 second and nothing happen.
What I have tried:
- check monitor status via xset -q (dpms) - it says monitor off but the TV stays on
- run xset dpms force off - again the TV only blink for 1 second nothing else happen
- Changed GL driver from raspi-config and reboot
- Tried with other TV (both are LG brand 42" and 65")
Both tvservice -p and vcgencmd display_power 0 will work with any screen orientation but unfortunately it will display “no signal” on the TV.
Can anybody please help me out? This is really frustrating