If you have been running proprietary drivers and wish to revert back to opensource drivers, edit /etc/X11/xorg.conf.d/xx-xxxx.conf with an editor with root permissions. Find the section that reads SECTION DEVICE and change the display driver to read nouveau OR radeon OR intel (to name but a few).
Thank you for understanding and kind reaction. And good advice. I created a subdir '/etc/X11/xorg.conf.d', renamed the "xorg.conf" to "nv.conf" and put it in '/etc/X11/xorg.conf.d/'
I wonder, if your xrandr problem is also solved.
Yes, seems to be OK as well
Screen 0: minimum 320 x 200, current 1680 x 1050, maximum 1920 x 1920
LVDS connected 1680x1050+0+0 0mm x 0mm
The name is not really important (expect the '.conf' extension) - it just defines the order in which the files are read.
Thank you for this info. Called the file "nv.conf"
I do really appreciate your kind help.