I bought a PCI Express card (PEXUSB3S44V from Startech, see https://www.startech.com/nl/en/Cards-Adapters/USB-3.0/Cards/PCI-Express- USB-3-Card-4-Dedicated-Channels-4-Port~PEXUSB3S44V) basically because it is the most expensive card you can get (I was hoping to rule out certain things with that).
As a result I no longer need to disable iommu in the BIOS or pass iommu=soft as kernel boot parameter. However, I still get the following dmesg: POWER DOWN CONNECTED DEVICE (Valve Index): [77859.996165] retire_capture_urb: 99 callbacks suppressed [77859.996475] usb 14-1.3: USB disconnect, device number 3 [77859.996479] usb 14-1.3.1: USB disconnect, device number 4 [77859.997165] usb 14-1.3.3: cannot submit urb (err = -19) [77859.999429] usb 14-1: USB disconnect, device number 2 [77860.002716] usb 14-1.3.2: USB disconnect, device number 5 [77860.005249] usb 14-1.3.3: cannot submit urb 0, error -19: no device [77860.009536] usb 14-1.3.3: USB disconnect, device number 6 [77860.013694] usb 14-1.3.5: USB disconnect, device number 7 [77860.737515] usb 15-1: USB disconnect, device number 2 [77860.737520] usb 15-1.1: USB disconnect, device number 3 POWER UP CONNECTED DEVICE [77865.729313] xhci_hcd 0000:08:00.0: xHCI host not responding to stop endpoint command. [77865.729989] xhci_hcd 0000:08:00.0: xHCI host controller not responding, assume dead [77865.729995] xhci_hcd 0000:08:00.0: HC died; cleaning up This reproduces 100% of the time. Kernel: 5.6.0-rc7-lowlatlocxhci This is 5.6.0-rc7 with a .config from a lowlatency kernel, ran through make oldconfig; then localmodconfig to get rid of unused modules and make menuconfig to turn xhci_hda and xhci_pci into kernel modules. I can assure you however that this bug happens with any kernel and any reasonable .config (I tried 4.15-general and several other kernels and configs too). Recovery is now possible with: sudo rmmod xhci_pci sudo modprobe xhci_pci This allows me to recover without having to reboot, but also to experiment with changes to the drivers. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1313279 Title: xHCI host not responding to stop endpoint command To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1313279/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
