It seems the problem is related to 64 bit Linux on Gigabyte motherboards. 32 bit? No problem. Windows? No problem. Another mobo? No problem. So much for buying the preferred Linux mobo. I've added the GRUB_CMDLINE_LINUX= change to /etc/default/grub and updated with "update-bootloader". I hope that is the right substitute for "update-grub". I guess "bootloader" is some sort of name improvement over "grub" since grub is now pase. Welp, sending this out and about to reboot. CF: https://ubuntuforums.org/showthread.php?t=2111223&page=4 Re: GIGABYTE GA-970A-DS3 motherboard not working with 64 bit kernel Here is my updated fix First enable iommu in the uefi by restarting your computer and pressing delete to enter the uefi plug your usb mouse, keyboard and thumbdrive in usb 2 ports. save and exit the uefi Then In Ubuntu: press Ctrl+Alt+T to open up a terminal run the following command: sudo gedit /etc/default/grub Edit the empty quotes in this line to read: GRUB_CMDLINE_LINUX="iommu=soft" save changes to grub and exit gedit and the terminal Open up a new terminal with ctrl+alt+t run the following command: sudo update-grub then exit the terminal using this command: exit Restart your computer press delete to get back into the uefi Disable iommu in bios, load optimized defaults and restart. usb, 2.0 usb 3.0 and networking all work now in Ubuntu, and disabling iommu in bios helps prevent windows freezes that was occurring if you are running a dual boot environment. If the above post helps anyone I am happy. Last edited by ozcyto; May 29th, 2014 at 12:25 AM. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html