Your XorgLog.txt mentions that it's getting the problematic settings like these from a config file somewhere:
[ 7.396] (**) |-->Screen "Default Screen Section" (0) [ 7.396] (**) | |-->Monitor "<default monitor>" ... [ 8.110] (**) FBDEV(1): claimed PCI slot 1@0:0:0
It also suggests to look in /usr/share/X11/xorg.conf.d for the offending file.
Your XorgLog.txt mentions that it's getting the problematic settings like these from a config file somewhere:
[ 7.396] (**) |-->Screen "Default Screen Section" (0)
[ 7.396] (**) | |-->Monitor "<default monitor>"
...
[ 8.110] (**) FBDEV(1): claimed PCI slot 1@0:0:0
It also suggests to look in /usr/share/ X11/xorg. conf.d for the offending file.