docs: add fix for pi5 on lite

docs/Troubleshooting.md

@@ -76,6 +76,27 @@ cat /var/log/Xorg.0.log
     ```
     This error is common on RaspberryOS when using FBturbo and it's not a related issue.
 
+!!! abstract "If you see this line in the [system logs](#system-logs):"
+    ```sh
+    (EE) Cannot run in framebuffer mode. Please specify busIDs for all framebuffer devices
+    ```
+    This has been known to happen on RaspberryOS Bookworm Lite on Pi5
+
+    ```sh
+    sudo nano /etc/X11/xorg.conf.d/99-vc4.conf
+    ```
+    paste this into the file:
+    ```
+    Section "OutputClass"
+      Identifier "vc4"
+      MatchDriver "vc4"
+      Driver "modesetting"
+      Option "PrimaryGPU" "true"
+    EndSection
+    ```
+    reboot
+
+
 [Maybe it's the wrong framebuffer](Troubleshooting/Framebuffer.md)
 
 If you can't fix it, [try using a desktop distro as described here.](Troubleshooting/Last_resort.md)