Rotate Raspberry Pi screen image

JanBeckman

I am using the server software on a raspberry pi 3 touch screen. It works great, however the screen is upside down. Can I rotate it anywhere in the settings? I can remount the screen, but don't really want to do that. Is it somewhere in the terminal application I can do this?

Thanks very much.

Repetier

From image documentation:

Rotate Display

Depending on how you have mounted the display, you may need to rotate the screen. To do this, login and run

sudo nano /boot/config.txt

and search for a line

# Rotate screen 180°
lcd_rotate=2

A value of 0 is no rotation, 2 = 180°.

TT_Vert

Any idea how to do this to the output of the pi camera to repetier-host on the pi using ffmpeg?  

Dve

Repetier

Webcam settings have a rotation settings in printer settings.

TT_Vert

That only fixed displaying in repetier but also needed the web ui oriented correct.  After going through the webcamd daemon I was pointed to /boot/octopi.txt which allowed me to add the correct mjpg switches.

polinator

How do I log in to execute the command on the touch screen?

Repetier

You login over ssh in commandline:
ssh pi@ipnumber
Since windows 10 even windows has the command natively on board, otherwise use putty.
Password is raspberry

Moalca

Hi, if I have the screen connected by HDMI, how can I rotate the screen?

Repetier

With latest buster os there are several solutions to set in /boot/config.txt

# Flips the display using the LCD's inbuilt flip functionality. Rotation: 0 = normal, 1 = 90°, 2 = 180°, 3 = 270°

# lcd_rotate=0

# Rotate in gpu instead. 90 and 270° require extra memory!

# display_hdmi_rotate=0

# For legacy drivers, same as display_hdmi_rotate

# display_lcd_rotate=0

# Deprecated, for backward compatibility

# display_rotate=0

Which of them work depends on the display. display_hdmi_rotate should work on all since it is rotated on gpu already, but then you might also need to invert touch driver positions. Not sure if they change automatically.

Moalca

The display_hdmi_rotate option does not appear

Repetier

Just add it - in the example they are all commented out either. That is the list I will have predefined in next release as that were all settings I could find on pi foundation home page as possible options.

Moalca

It doesn't work, the operating system is raspbian? How can I access the desktop? From settings you can

Repetier

Yes we use the official raspbian lite with some extra configurations. But the image it self has no full featured desktop to save ram and cpu. If you need a extra program on display login via ssh and set
export DISPLAY=:0

and then call the program you want on desktop. It will then open in front of the chromium browser.

Moalca

Okay thanks

orion

I am having similar issues where this does not work. I need to rotate the Repetier screen (via HDMI from the Pi 3) 90 degrees. No matter what, the Repetier UI screen stays exactly the same zero rotation. I can't even rotate 180 degrees. Is there another setting I need to rotate Repetier UI?
FYI - using the BTT HDMI5 display HDMI + USB

orion

I see there are instructions on the new V30+ images to rotate. Unfortunately those instructions do not work either.
https://www.repetier-server.com/download-images/
Quote:
 Solution one is m our config tool, just go to 8 Run raspi-config  6 Interfaces Options  1 Legacy Camera an select the legacy solution.

Unfortunately this menu is incorrect. Also - why I would go to the legacy camera settings seems unusual.

The second solution provided also does not work:

pi@RepetierServer:~ $ DISPLAY=:0 sudo -AE arandr

(arandr:6579): Gdk-CRITICAL **: 10:54:46.141: gdk_atom_intern: assertion 'atom_name != NULL' failed

(arandr:6579): Gdk-CRITICAL **: 10:54:46.142: gdk_atom_intern: assertion 'atom_name != NULL' failed

orion

Your instructions are incorrect, or at least incorrectly/incompletely written. It would be nice to get the second solution to work. I was able to open your settings UI in an X-session (where the settings were locked) but never on the HDMI display, so the second solution appears still broken. I am a bit disappointed in how messy your documentation is on this. For the record, here's how you can get this working:

Reverting to the legacy driver is possible:
1. Run:
sudo raspi-config
Select:
 6) Advanced Options
 A2) GL Driver
 G1) Legacy


2. edit /boot/config.txt e.g.

 display_hdmi_rotate=3

3. in order to get the touch-screen oriented properly, you need to edit
/usr/share/X11/xorg.conf.d/40-libinput.conf 

Section "InputClass"

        Identifier "libinput touchscreen catchall"

        MatchIsTouchscreen "on"

        MatchDevicePath "/dev/input/event*"

#if screen is rotated, you need to transform the touch-matrix as per the below:

#90 degrees

#       Option "TransformationMatrix" "0 1 0 -1 0 1 0 0 1"

#180 degrees

#       Option "TransformationMatrix" "-1 0 1 0 -1 1 0 0 1"

#270 degrees

        Option "TransformationMatrix" "0 -1 1 1 0 0 0 0 1"

        Driver "libinput"

EndSection

Repetier

Selecting legacy webcam does the same selecting old video driver.

I have added the transformation solution for touch screen in case someone else needs this. This mainly depends on rotation option. The hdmi rotate solution I used to pi display did not need that, but if display is rotated software side I guess it needs to do the same with input needing this.

Thanks.