I found a problem: I use now last kernel... I install Binary Nvidia... lauch beryl-manager and work well.
Close beryl and enable "desktop effect" Ubuntu say "not able to bla bla bla" and X restart, I login X restart... again again again, my Xorg.0.log give me errors: [CUT] (**) NVIDIA(0): Option "RenderAccel" "True" (**) NVIDIA(0): Option "AllowGLXWithComposite" "True" (**) NVIDIA(0): Option "AddARGBGLXVisuals" "True" (**) NVIDIA(0): Enabling RENDER acceleration (EE) NVIDIA(0): Failed to initialize the GLX module; please check in your X (EE) NVIDIA(0): log file that the GLX module has been loaded in your X (EE) NVIDIA(0): server, and that the module is the NVIDIA GLX module. If (EE) NVIDIA(0): you continue to encounter problems, Please try (EE) NVIDIA(0): reinstalling the NVIDIA driver. (II) NVIDIA(0): NVIDIA GPU GeForce 6200 at PCI:1:0:0 (GPU-0) [CUT] sorry for my english.... ;-) ** Attachment added: "My Xorg.log" http://librarian.launchpad.net/7046587/Xorg.0.log -- [apport] [feisty] compiz.real crashed with SIGSEGV https://launchpad.net/bugs/96610 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs