BTT HDMI 7 screen

Hi all,

Apologies if this has been covered before. New HDMI 7" display from BTT - has anyone managed to get it to work with KlipperScreen on PI4? I have connected and modified boot.txt as per BTT pdf manual :

# uncomment to force a specific HDMI mode (this will force VGA)

hdmi_group=2
hdmi_mode=87
hdmi_cvt 1024 600 60 6 0 0 0

# uncomment to force a HDMI mode rather than DVI. This can make audio work in

# DMT (computer monitor) modes

hdmi_drive=1

I started to get console on boot but garbage instead of KlipperScreen.
Figured out that may be because I have set my PI up for “stock” PI screen before, and disabled dtoverlay:

[pi4]

# Enable DRM VC4 V3D driver on top of the dispmanx display stack

# dtoverlay=vc4-fkms-v3d # Disabled now

max_framebuffers=2

Now I have the KlipperScreen screen but it does not fit the display (like 2 time larger than it should. Any help is much appreciated.

TIA

Put an = before 1024. I don’t know that that’s the issue, but that brings it in line with the other settings. I got my 5” display working last night using similar settings.

Thanks, tried that (= was missing from BTT manual)… still does not work. It looks like this screen just does not want to go to 1024x600 mode. I have tried to use hdmi force mode and the screen just hangs with the rainbow.