Just got hit with the problem again, after the 1.11.0 firmware upgrade, on Cosmic:
[428188.916420] xhci_hcd 0000:0e:00.0: ERROR unknown event type 15 [428193.955247] xhci_hcd 0000:0e:00.0: xHCI host not responding to stop endpoint command. [428193.955570] xhci_hcd 0000:0e:00.0: xHCI host controller not responding, assume dead [428193.955670] usb 3-1.5: Failed to suspend device, error -22 [428193.955707] xhci_hcd 0000:0e:00.0: HC died; cleaning up [428193.955710] usb 4-1.1.1: Failed to suspend device, error -22 [428193.955768] usb 3-1: USB disconnect, device number 2 [428193.955770] usb 3-1.1: USB disconnect, device number 3 [428193.955773] usb 3-1.1.1: USB disconnect, device number 5 [428193.955776] usb 3-1.1.1.1: USB disconnect, device number 7 [428193.955779] usb 3-1.1.1.1.4: USB disconnect, device number 9 [428193.955923] usb 4-1: USB disconnect, device number 2 [428193.955926] usb 4-1.1: USB disconnect, device number 3 [428193.955927] usb 4-1.1.1: USB disconnect, device number 5 [428193.956974] usb 4-1.2: USB disconnect, device number 4 [428194.196633] usb 3-1.1.1.3: USB disconnect, device number 8 [428194.277991] usb 3-1.1.1.5: USB disconnect, device number 10 [428194.278531] usb 3-1.1.5: USB disconnect, device number 6 [428194.279067] usb 3-1.5: USB disconnect, device number 4 $ uname -a Linux vesho 4.18.0-10-generic #11-Ubuntu SMP Thu Oct 11 15:13:55 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1766076 Title: USB over thunderbolt turns off every once in a while To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1766076/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
