Install xserver-xorg-video-openchrome by entering the following commands in the terminal:
sudo apt update sudo apt install xserver-xorg-video-openchrome
Description:
X.Org X server -- OpenChrome display driver
This package provides the 'openchrome' driver for the VIA Technologies UniChrome and Chrome9 IGPs chipsets. The following chips should be supported: CLE266, KM400(A), KN400(A), P4M800, K8M800, K8N800, PM800, PN800, PM880, CN333, CN400, P4M800 Pro, VN800, CN700, CX700, VX700, P4M890, VN890, CN800, K8M890, K8N890, P4M900, VN896, CN896, VX800, VX820, VX855, VX875, VX900. . This package is built from the FreeDesktop.org xf86-video-openchrome driver.
Homepage: https://www.freedesktop.org/wiki/Openchrome/
Version: 1:0.6.0-3
Section: universe/x11