It looks like you've manually installed the nvidia driver instead of using the Ubuntu packages so your driver path is /usr/lib64/xorg/modules/drivers//nvidia_drv.so instead of /usr/lib/xorg/modules/drivers/nvidia_drv.so and thus the compiz startup script is failing to find it.
** Changed in: compiz (Ubuntu) Importance: Undecided => Low ** Changed in: compiz (Ubuntu) Status: New => Invalid -- compiz won't start with nvidia 9100 - lacks Xgl https://bugs.launchpad.net/bugs/437805 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