OK, I just found out the problem is dri. I had Disable "DRI" in my xorg.conf, but it should be Disable "dri". Disabling dri fixes the problem for me. A new Xorg.0.log withouth dri attached.
** Attachment added: "Xorg.0.nodri2.log" http://launchpadlibrarian.net/9522639/Xorg.0.nodri2.log -- Screen displays garbage https://bugs.launchpad.net/bugs/133192 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
