Same problem here, NP900X4C. Found the solution though. It's just a wrong default setting in the BIOS:
https://bbs.archlinux.org/viewtopic.php?id=156657 Just Enable the "USB S3 Wake-up" option in the Bios -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094534 Title: USB 3.0 ports don't work after suspend, xhci_hcd errors in kernel log To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1094534/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
