75 lines
1.7 KiB
Markdown
75 lines
1.7 KiB
Markdown
# Screen is using the wrong framebuffer
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If you have multiple framebuffers, you may need to fix the X11 configuration,
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list the available framebuffers and check the current one:
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```sh
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ls /dev/fb*
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```
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!!! example "Output example"
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```
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pi@raspberrypi ~ $ ls /dev/fb*
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/dev/fb0 /dev/fb1
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```
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!!! failure "Critical"
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if you only see one, for example `/dev/fb0` then this is not the issue. Go to [Troubleshooting](../Troubleshooting.md)
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## Use fbcp to copy from one framebuffer to the other
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```sh
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cd
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git clone https://github.com/tasanakorn/rpi-fbcp.git
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cd rpi-fbcp
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mkdir build
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cd build
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cmake ..
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make
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sudo install fbcp /usr/local/bin/fbcp
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sudo wget -O /etc/init.d/fbcp https://gist.github.com/notro/eac0fec51cac67bb99c7/raw/4804a36459db10b17d35451d98d4573a045084be/fbcp
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sudo chmod +x /etc/init.d/fbcp
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sudo update-rc.d fbcp defaults
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sudo reboot
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```
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## Manually change the framebuffer
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the file specifying the framebuffer could be:
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- 99-fbturbo.conf
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- 99-fbusb.conf
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- 99-fbdev.conf
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check if one of those or similar exist with:
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```sh
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ls /usr/share/X11/xorg.conf.d/
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```
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!!! failure "Critical"
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***DO NOT CREATE A FILE***, and only edit if there is more than 1 framebuffer
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!!! example
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you found 99-fbdev.conf:
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```sh
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sudo nano /usr/share/X11/xorg.conf.d/99-fbdev.conf
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```
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``` title="99-fbturbo.conf"
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Section "Device"
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Identifier "Allwinner A10/A13/A20 FBDEV"
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Driver "fbdev"
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Option "fbdev" "/dev/fb0"
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Option "SwapbuffersWait" "true"
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EndSection
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```
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since `ls /dev/fb*` returned `/dev/fb0 /dev/fb1` change it to `/dev/fb1`
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Save the file, restart KlipperScreen.
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```sh
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sudo service KlipperScreen restart
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```
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