GeneralKlipperScreen/docs/Troubleshooting/Framebuffer.md

Screen is using the wrong framebuffer

LCD-show

when using Waveshare-LCD-show to install screens add lite at the end to properly install the screen on the lite version of the OS. this will typically change the framebuffer

for example:

sudo ./LCD35-show lite

Manually change the framebuffer

If you have multiple framebuffers, you may need to fix the X11 configuration, list the available framebuffers and check the current one:

ls /dev/fb*

!!! example "Output example" pi@raspberrypi ~ $ ls /dev/fb* /dev/fb0 /dev/fb1

!!! failure "Critical" if you only see one, for example /dev/fb0 then this is not the issue. Go to Troubleshooting

the file specifying the framebuffer could be:

• 99-fbturbo.conf
• 99-fbusb.conf
• 99-fbdev.conf

check if one of those or similar exist with:

ls /usr/share/X11/xorg.conf.d/

!!! failure "Critical" DO NOT CREATE A FILE, and only edit if there is more than 1 framebuffer

!!! example you found 99-fbturbo.conf:

```sh
sudo nano /usr/share/X11/xorg.conf.d/99-fbturbo.conf
```
and the file specifies `/dev/fb0`

since `ls /dev/fb*` returned `/dev/fb0 /dev/fb1` change it to `/dev/fb1`

Save the file, restart KlipperScreen.

```sh
sudo service KlipperScreen restart
```