Hello everyone, unfortunately it happened again (system started without parameters):
[ 9.561808] br0: port 2(eth1) entered forwarding state [95735.974041] usb 2-1: USB disconnect, device number 2 [95735.974215] xhci_hcd 0000:00:14.0: WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state. [95735.974439] xhci_hcd 0000:00:14.0: WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state. [95735.974471] ax88179_178a 2-1:1.0 eth1: unregister 'ax88179_178a' usb-0000:00:14.0-1, ASIX AX88179 USB 3.0 Gigabit Ethernet [95735.974523] ax88179_178a 2-1:1.0 eth1: Failed to read reg index 0x0002: -19 [95735.974532] ax88179_178a 2-1:1.0 eth1: Failed to write reg index 0x0002: -19 [95735.974595] br0: port 2(eth1) entered disabled state [95735.974783] device eth1 left promiscuous mode [95735.974790] br0: port 2(eth1) entered disabled state [95735.992489] ax88179_178a 2-1:1.0 eth1 (unregistered): Failed to write reg index 0x0002: -19 [95735.992503] ax88179_178a 2-1:1.0 eth1 (unregistered): Failed to write reg index 0x0001: -19 [95735.992510] ax88179_178a 2-1:1.0 eth1 (unregistered): Failed to write reg index 0x0002: -19 [95736.215301] usb 2-1: new SuperSpeed USB device number 4 using xhci_hcd [95736.566562] ax88179_178a 2-1:1.0 eth1: register 'ax88179_178a' at usb-0000:00:14.0-1, ASIX AX88179 USB 3.0 Gigabit Ethernet, 00:0e:c6:81:79:01 Marco -- 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
