Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.19 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19-rc5 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1794074 Title: xhci_hcd 0000:25:00.0: ERROR unknown event type 15 Status in linux package in Ubuntu: Incomplete Bug description: Using Ubuntu 18.04 as a bare-metal VM server via libvirtd qemu-kvm, after some time with the guests running, xhci freaks out and thinks the server died and disables all USB devices. xhci_hcd 0000:25:00.0: ERROR unknown event type 15 xhci_hcd 0000:25:00.0: xHCI host not responding to stop endpoint command. xhci_hcd 0000:25:00.0: xHCI host controller not responding, assume dead xhci_hcd 0000:25:00.0: HC died; cleaning up To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1794074/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
