Can you please attach your /etc/X11/xorg.conf, /var/log/Xorg.0.log, /var/log/Xorg.0.log.old files? Also the output from lspci -nnvv
Can you please attach your /etc/X11/xorg.conf, /var/log/ Xorg.0. log, /var/log/ Xorg.0. log.old files? Also the output from lspci -nnvv