Following a post by John@Parallels (if I remember correctly) I started to get interested in the contents, and possibly of the edition/configuration xorg.conf. A search in Terminal brought up the following list of xorg.conf files available in my system: ********** /etc/X11/xorg.conf /etc/X11/xorg.conf.1 /etc/X11/xorg.conf.2 /etc/X11/xorg.conf.20080424053505 /etc/X11/xorg.conf.20080424153534 /etc/X11/xorg.conf.20080509081756 /etc/X11/xorg.conf.20080509235708 /etc/X11/xorg.conf.20080603042811 /etc/X11/xorg.conf.20080612065225 /etc/X11/xorg.conf.20080613141044 /etc/X11/xorg.conf.20080621075636 /etc/X11/xorg.conf.20080708083240 /etc/X11/xorg.conf.bak /etc/X11/xorg.conf.failsafe /etc/X11/xorg.conf.prl-backup ******* It seems that the files with a digit or a string of digits after the dot in xorg.conf. are successive files generated by Parallels Tools. Are *all* those files required? Which could or should be erased (rm) Or is it safer not to mess with them? I can see a file named whose path is /etc/X11/xorg.failsafe that could be the "trigger" that makes the system read the "current" configuration? I am familiar with .conf files such as gnupg.conf, gpg-agent.conf and understand that they are read by gpg to function. I am not sure how these xorg.conf files could or should be edited. Thanks for pointing me in the right direction (some kind of HOWTO or Documentation), if the explanation is too long to post here. TIA!
3 files actually needed /etc/X11/xorg.conf /etc/X11/xorg.conf.failsafe /etc/X11/xorg.conf.prl-backup How to edit sudo vi /etc/X11/xorg.conf you can use any text editor under sudo, or root
Rephrasing my question about editing xorg.conf Thank you John for your answer about the xorg.conf files that are really needed. I shall get rid of the additional ones. But when I asked "how to edit the xorg.conf file" I didn't mean how to access the file with a suitable text editor (using sudo or root), I know how do that. What I meant is how to edit the contents, what options should be enabled ("uncommented"), or disabled ("commented"), or added, etc. Regards.
man xorg.conf I suppose you need to know about options, may be this one also http://www.x.org/archive/X11R6.8.0/doc/xorg.conf.5.html