Could you attach (not paste) /var/log/Xorg.0.log, /etc/X11/xorg.conf and the output of commands lspci -vv and lspci -nvv.
Could you attach (not paste) /var/log/ Xorg.0. log, /etc/X11/xorg.conf and the output of commands lspci -vv and lspci -nvv.