https://docs.khadas.com/ 2026-05-03T08:16:23+00:00 https://docs.khadas.com/ https://docs.khadas.com/ttps://docs.khadas.com/lib/tpl/dokuwiki-new/images/favicon.ico text/html 2022-07-13T22:23:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/troubleshooting/capture-log?rev=1657765398&do=diff VIM4 Capture Running Log This guide is for users of Ubuntu Linux. You can capture information from the running system log to diagnose abnormal behaviour and unexpected outputs. Login via a Serial Terminal Connect your PC to the SBC using a Serial Debug Tool. The default account and password of Ubuntu Linux is as follows: text/html 2024-10-21T22:10:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/troubleshooting/obs-fixup?rev=1729563041&do=diff VIM4 OBS fixup Introduction OBS can't work properly on Ubuntu with Wayland by default, here we provide a solution to fix this issue. Solution QT_QPA_PLATFORMxcb $ export QT_QPA_PLATFORM=xcb $ obs Remove GPU package text/html 2025-03-17T22:38:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/troubleshooting/remove-gpu-package?rev=1742265495&do=diff VIM4 Remove GPU Package In order to have better desktop experience, the Ubuntu OS has Wayland GPU support by default. But in some situations, this may break some software, so we provide a way to uninstall the GPU package here to use CPU rendering. text/html 2022-07-13T21:25:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/troubleshooting/start?rev=1657761925&do=diff VIM4 Troubleshooting troubleshooting index text/html 2022-11-21T04:44:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/troubleshooting/ubuntu22.04-fixup?rev=1669023863&do=diff VIM4 Ubuntu 22.04 Fixup Introduction For newer SBC like VIM4, VIM1S and Edge2, the default desktop is Ubuntu 22.04 with Wayland GPU support, in this case, it may breaks some software from upstream, here we provide the solution to fixup such software. text/html 2022-11-21T05:09:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/troubleshooting/x11-fixup?rev=1669025390&do=diff VIM4 X11 Fixup For VIM4/1S/3/3L with 5.15 kernel, the default desktop is Gnome with Wayland GPU support, it breaks the X11 desktop by default, if you want to use the X11 desktop, please follow the steps bewlow: cd /tmp/ sudo apt update apt download libgbm1 dpkg -x libgbm1_*.deb libgbm1 sudo rm /usr/lib/aarch64-linux-gnu/libgbm.so.1.0.0 sudo cp libgbm1/usr/lib/aarch64-linux-gnu/libgbm.so.1.0.0 /usr/lib/aarch64-linux-gnu/ sync sudo reboot