Can you please run ubuntu-bug 541749 to attach the logs we need here? Also, what is the brand and model of both the GPU and the motherboard? Do you have an option to disable SLI or set the lane width to 16x in bios? There are quite a few 630i motherboards (mostly from gigabyte) sold with 16x slots that only work in 4x mode.
** Changed in: nvidia-graphics-drivers (Ubuntu) Status: New => Incomplete ** Changed in: nvidia-graphics-drivers (Ubuntu) Importance: Undecided => Low -- PCIExpress 1.0 16x Port (nforce 630i) and 16x-Card 8600 GTS only synced at bus-type 4x https://bugs.launchpad.net/bugs/541749 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