Can´t rotate my display

Klinge

I have just reinstalled my MMM. Everything is fine except the last step.

I am trying to rotate my display 90 degrees clockwise. To do this, I have added

/boot/firmware/config.txt

I commented out the line following line

# dtoverlay=vc4-kms-v3d

and added the line

display_hdmi_rotate=1

underneath

But by commenting the line out, the Raspi no longer starts correctly. Only a black screen appears.

The operating system is already started. I can still access it via SSH. But I can see only a black screen.

As soon as I uncomment the line

dtoverlay=vc4-kms-v3d

again, the Raspi starts correctly. But then the screen is not rotated, even though I have not deleted the line

display_hdmi_rotate=1

It would be great if you could help me again.

Than in advance
Klinge

sdetweil

@Klinge which version of the OS did you install??

with the Wayland compositor
or the latest with the LabWC compositor

they are different on how to rotate than the old X11

Klinge

@sdetweil I use

Raspberry Pi OS with desktop
Release date: November 19th 2024
System: 64-bit
Kernel version: 6.6
Debian version: 12 (bookworm)

and a Raspberry 3 Model b+

sdetweil

@Klinge ok, do

ps -ef | grep labwc

i think it will return the labwc compositor process info

Klinge

@sdetweil I got the following infos

pi@raspi-mm-bad:~ $ ps -ef | grep labwc
pi           645     619 42 16:50 ?        00:35:55 /usr/bin/labwc -m
pi           714     645  0 16:50 ?        00:00:00 /usr/bin/ssh-agent /usr/bin/labwc-pi
pi         33729   32904 25 18:15 pts/0    00:00:00 grep --color=auto labwc

sdetweil

@Klinge if you use the os desktop menu top left, preferences, last entry i think is display configuration, you can rotate there

Klinge

@sdetweil Oh! So simple? It is like at Windows. Only with mouse configuration. I found it under Screen configuration - > orientation
Thank you again for your help. You are my little hero 😉