Please stop doing updates that mess with the official touchscreen!
I have a Raspberry PI4 4GB with official touchscreen. All was working fine until updating (sudo apt upgrade) a couple of weeks ago when the touch panel was rotated 180 deg without warning - after adding lcd_rotate=2 and rotating the display in desktop all was working again.
Now, this morning after updating again, the touch panel was rotated 180 deg but the display was fine, so I tried to edit /boot/config.txt to find it was no longer there and is now /boot/firmware/config.txt, so edited that the lcd_rotate=0 and guess what...the display does not even turn on regardless of what I change lcd_rotate= to. I can't even find the backlight location to try and switch it on that way (used to be '/sys/class/backlight/rpi_backlight/bl_power', then '/sys/class/backlight/10-0045/bl_power', now I have no idea). The Pi boots as I can connect using SSH.
Is there anywhere to find release notes for updates that are done using 'sudo apt upgrade'? This might help identify the problem. Any other suggestions would be great.
I have a Raspberry PI4 4GB with official touchscreen. All was working fine until updating (sudo apt upgrade) a couple of weeks ago when the touch panel was rotated 180 deg without warning - after adding lcd_rotate=2 and rotating the display in desktop all was working again.
Now, this morning after updating again, the touch panel was rotated 180 deg but the display was fine, so I tried to edit /boot/config.txt to find it was no longer there and is now /boot/firmware/config.txt, so edited that the lcd_rotate=0 and guess what...the display does not even turn on regardless of what I change lcd_rotate= to. I can't even find the backlight location to try and switch it on that way (used to be '/sys/class/backlight/rpi_backlight/bl_power', then '/sys/class/backlight/10-0045/bl_power', now I have no idea). The Pi boots as I can connect using SSH.
Is there anywhere to find release notes for updates that are done using 'sudo apt upgrade'? This might help identify the problem. Any other suggestions would be great.
Statistics: Posted by trlaing — Fri Feb 02, 2024 8:54 am