Attaching dmesg output from booting 4.13 with the card inserted. Some xhci messages may be of interest.
** Attachment added: "dmesg-x220-usb3-20180115.txt" https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1743495/+attachment/5037644/+files/dmesg-x220-usb3-20180115.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1743495 Title: system stutters heavily with usb3 ExpressCard inserted To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1743495/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs