After a reboot my screen resolution has suddenly changed. I didn’t make any changes that I’m aware of.
What is the easiest way to restore it please?
I’m using a RPi4b running Bookworm from a USB memory stick and it’s connected to a Samsung QLED 4K 50in TV.
Thanks in advance.
Additional info;
It’s connected to the TV with the official Pi HDMI cable supplied with the Pi. I’ve just powered down, removed the cable and checked diagnostics and it says; EDID=none.
I tried the solution at https://forums.raspberrypi.com/viewtop ... n#p2333891 (adding line to cmdline.txt) but while the resolution looked fixed during the boot process, it wasn’t at the login screen and beyond.
What is the easiest way to restore it please?
I’m using a RPi4b running Bookworm from a USB memory stick and it’s connected to a Samsung QLED 4K 50in TV.
Thanks in advance.
Additional info;
It’s connected to the TV with the official Pi HDMI cable supplied with the Pi. I’ve just powered down, removed the cable and checked diagnostics and it says; EDID=none.
I tried the solution at https://forums.raspberrypi.com/viewtop ... n#p2333891 (adding line to cmdline.txt) but while the resolution looked fixed during the boot process, it wasn’t at the login screen and beyond.
Statistics: Posted by Seedy — Tue Sep 16, 2025 6:15 am