I'm using a 2.5gb ethernet usb device and getting this error intermittently (a dozen times per day).
$ uname -a Linux hephaestus 5.4.0-135-generic #152-Ubuntu SMP Wed Nov 23 20:19:22 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux $ lsusb <snip> Bus 003 Device 016: ID 0bda:8156 Realtek Semiconductor Corp. USB 10/100/1G/2.5G This is what plays out via /var/log/syslog each time: Dec 21 10:26:47 hephaestus kernel: [346923.166782] usb 3-4: USB disconnect, device number 15 Dec 21 10:26:47 hephaestus kernel: [346923.166913] xhci_hcd 0000:00:14.0: WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state. Dec 21 10:26:47 hephaestus kernel: [346923.166927] cdc_ncm 3-4:2.0 eth1: unregister 'cdc_ncm' usb-0000:00:14.0-4, CDC NCM Dec 21 10:26:47 hephaestus kernel: [346923.167071] xhci_hcd 0000:00:14.0: WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state. Dec 21 10:26:47 hephaestus kernel: [346923.170644] xhci_hcd 0000:00:14.0: WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state. Dec 21 10:26:47 hephaestus dhclient[320734]: receive_packet failed on eth1: Network is down Dec 21 10:26:47 hephaestus systemd[1]: Stopping ifup for eth1... Dec 21 10:26:47 hephaestus dhclient[325522]: Killed old client process Dec 21 10:26:47 hephaestus ifdown[325522]: Killed old client process Dec 21 10:26:47 hephaestus kernel: [346923.478913] usb 3-4: new SuperSpeed Gen 1 USB device number 16 using xhci_hcd Dec 21 10:26:47 hephaestus kernel: [346923.499567] usb 3-4: New USB device found, idVendor=0bda, idProduct=8156, bcdDevice=31.00 Dec 21 10:26:47 hephaestus kernel: [346923.499573] usb 3-4: New USB device strings: Mfr=1, Product=2, SerialNumber=6 Dec 21 10:26:47 hephaestus kernel: [346923.499577] usb 3-4: Product: USB 10/100/1G/2.5G LAN Dec 21 10:26:47 hephaestus kernel: [346923.499580] usb 3-4: Manufacturer: Realtek Dec 21 10:26:47 hephaestus kernel: [346923.499583] usb 3-4: SerialNumber: 001000001 Dec 21 10:26:47 hephaestus kernel: [346923.523736] cdc_ncm 3-4:2.0: MAC-Address: xx:xx:xx:xx:xx:xx Dec 21 10:26:47 hephaestus kernel: [346923.523742] cdc_ncm 3-4:2.0: setting rx_max = 16384 Dec 21 10:26:47 hephaestus kernel: [346923.523836] cdc_ncm 3-4:2.0: setting tx_max = 16384 Dec 21 10:26:47 hephaestus kernel: [346923.524578] cdc_ncm 3-4:2.0 eth1: register 'cdc_ncm' at usb-0000:00:14.0-4, CDC NCM, xx:xx:xx:xx:xx:xx Dec 21 10:26:47 hephaestus systemd-udevd[325501]: Using default interface naming scheme 'v245'. Dec 21 10:26:47 hephaestus systemd-udevd[325501]: ethtool: autonegotiation is unset or enabled, the speed and duplex are not writable. Dec 21 10:26:47 hephaestus systemd[1]: Found device USB_10_100_1G_2.5G_LAN. (then things start back up and the ethernet link goes live again after about 10 seconds) -- 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/1749961 Title: xhci_hcd: TRB DMA errors reported with ASMedia ASM1142 USB 3.1 Controller Status in Linux: Confirmed Status in linux package in Ubuntu: In Progress Status in linux source package in Trusty: Won't Fix Status in linux source package in Xenial: Confirmed Status in linux source package in Bionic: Confirmed Status in linux source package in Focal: Confirmed Status in linux package in Debian: Confirmed Bug description: It was observed that while trying to use a 4K USB webcam connected to USB port provided by ASMedia ASM1142 USB 3.1 Controller, the webcam does not work and kernel log shows the following messages: [431.928016] xhci_hcd 0000:12:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 [431.928021] xhci_hcd 0000:12:00.0: Looking for event-dma 0000003f3330e020 trb-start 0000003f3330e000 trb-end 0000003f3330e000 seg-start 0000003f3330e000 seg-end 0000003f3330eff0 [431.928024] xhci_hcd 0000:12:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 [431.928026] xhci_hcd 0000:12:00.0: Looking for event-dma 0000003f3330e030 trb-start 0000003f3330e000 trb-end 0000003f3330e000 seg-start 0000003f3330e000 seg-end 0000003f3330eff0 [431.928027] xhci_hcd 0000:12:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 [431.928029] xhci_hcd 0000:12:00.0: Looking for event-dma 0000003f3330e050 trb-start 0000003f3330e000 trb-end 0000003f3330e000 seg-start 0000003f3330e000 seg-end 0000003f3330eff0 [431.928386] xhci_hcd 0000:12:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 A similar issue was already reported on Launchpad: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667750 The fix to this issue seems to be the following patch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9da5a109 Tests in our scenario with this patch proved still broken. Our next approach is to modify the patch a bit and re-test. This LP will be used to document our progress in the investigation. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1749961/+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