Install xserver-xorg-video-mach64-dbg by entering the following commands in the terminal:
sudo apt update sudo apt install xserver-xorg-video-mach64-dbg
Description:
X.Org X server -- ATI display driver (debugging symbols)
This driver for the X.Org X server (see xserver-xorg for a further description) provides support for the ATI Mach64 series. . This package provides debugging symbols for the Xorg X server ATI Mach64 display driver.
Version: 6.9.5-1build3
Section: universe/x11