I installed the latest version of the package openchrome as suggested, but without better results. I'm sorry. Here is my Xorg.0.log.
** Attachment added: "XorgLog.txt" http://launchpadlibrarian.net/26812664/XorgLog.txt -- only low resolution allowed and the mouse pointer not appear https://bugs.launchpad.net/bugs/369333 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs