Can’t change screen resolution on Raspbian

ChrisRamirez · February 11, 2020

I’m running raspbian on a raspberry pi 4 and can’t change my display’s resolution. I’ve tried changing it using the xrandr command (it says “display option not found”), tried to change the framebuffer in the /boot/config.txt and although I did save it and rebooted, the display still runs at 600x480, I’ve also tried the screen config manager but the only option comes up FIXEDMODE. Is there any way to override this fixed mode or set the framebuffer past this resolution. I’m running the display with a DSI cable.

kelvinhall05 · February 11, 2020

Your xrandr command is completely wrong. You need to create a new modeline and then apply that to your monitor.

https://wiki.ubuntu.com/X/Config/Resolution#Setting_xrandr_changes_persistently should have some info on this.

ChrisRamirez · February 11, 2020

2 hours ago, kelvinhall05 said:

Your xrandr command is completely wrong. You need to create a new modeline and then apply that to your monitor.

https://wiki.ubuntu.com/X/Config/Resolution#Setting_xrandr_changes_persistently should have some info on this.

Thank you I’ll check it out, I’m new to Linux and I’m still learning.