Rotate screen 180°

Why on earth do you need to do this?

Quote from jokemeister

t is normally farely easy to fix this in Linux using xrandr command

To use this command there need to be X Window installed , which is not the case for OMV.

That's what ChatGPT answered:

Quote

To rotate the display output on a Linux TTY (console) without any desktop environment or X server, you can use the framebuffer console rotation if your kernel and hardware support it. Here's how to do it:

✅ Method 1: Using fbcon kernel parameter (for boot-time rotation)

This method sets the rotation at boot via the kernel command line:

1. Edit your bootloader configuration (GRUB is typical):

   Open /etc/default/grub in a text editor:

   Code

   sudo nano /etc/default/grub

2. Modify the GRUB_CMDLINE_LINUX_DEFAULT line to include one of the following:

   Code

   GRUB_CMDLINE_LINUX_DEFAULT="quiet splash fbcon=rotate:<n>"

   Replace <n> with the appropriate value:

   • 0 = normal

   • 1 = 90° clockwise

   • 2 = 180°

   • 3 = 90° counterclockwise

3. Update GRUB:

   Code

   sudo update-grub

4. Reboot.

🔧 Method 2: Use fbset (if supported by your driver)

You can try:

Code

sudo fbset -xres <width> -yres <height> -vxres <width> -vyres <height> -rotate <angle>

⚠️ Limitations

• These methods only affect the framebuffer console, not the graphical environment.

• This will not work on all hardware. Intel and some ARM devices (like Raspberry Pi) usually support it.

• Some modern distributions use a graphical boot system (like plymouth) that might override or ignore this setting unless it's disabled.

🛠 Bonus: Verify framebuffer rotation support

You can try checking the framebuffer device with:

Code

cat /sys/class/graphics/fb0/rotate

If the file exists, you might try writing to it:

Code

echo 1 | sudo tee /sys/class/graphics/fb0/rotate

Let me know your hardware (e.g., Intel, AMD, Raspberry Pi) if you need more tailored steps.

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