this might fit in other places, too, but I guess it's the right section.
I have a ThinkPad X61t laptop which runs PCLOS since about roughly two years. I always updated and never had trouble.
The only thing that bothered me was that the TrackPoint (that little cursor mover stick in between the G, H, and B keys) wouldn't emulate the mouse wheel using the middle "mouse" button.
So I changed xorg.conf, adding a section for it and it worked fine. One day, it stopped working. As I didn't notice it immediately, I cannot tell when that happened. EDIT: the date of the current xorg.conf might give a hint, of course...
Now, as it started annoying me because I'm changing virtual desktops way too often when heading for the scrollbar
I looked into /etc/X11/xorg.conf and the section was gone.
There is a file named xorg.conf~ which contains the setting.
My question: do updates make changes to the xorg.conf or must it have been any action provoked by myself (unknowingly) that resulted in a "resetted" xorg.conf?
Might aptupdate or a new version of KDE be a culprit here?
TIA for your thoughts.