On Fri, Mar 5, 2021 at 5:07 PM Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > On Fri, Mar 05, 2021 at 01:09:16PM +0100, Sedat Dilek wrote: > > On Mon, Mar 1, 2021 at 4:53 PM Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > [ ... ] > > > You can use usbmon on bus 4 to record the USB traffic. It may indicate > > > why the resets occur. > > > > > > > Hi Alan, > > > > I followed the instructions in [1]. > > > > root# modprobe -v usbmon > > > > root# ls /sys/kernel/debug/usb/usbmon > > 0s 0u 1s 1t 1u 2s 2t 2u 3s 3t 3u 4s 4t 4u > > > > root# cat /sys/kernel/debug/usb/usbmon/4u > /tmp/usbmon-log_4u.txt > > [ Ctrl+C ] > > > > I recorded 13:03 - 13:04 (one minute). > > > > So these xhci-resets should be included: > > > > [Fri Mar 5 13:03:07 2021] usb 4-1: reset SuperSpeed Gen 1 USB device > > number 2 using xhci_hcd > > [Fri Mar 5 13:03:07 2021] usb 4-1: reset SuperSpeed Gen 1 USB device > > number 2 using xhci_hcd > > [Fri Mar 5 13:03:27 2021] usb 4-1: reset SuperSpeed Gen 1 USB device > > number 2 using xhci_hcd > > [Fri Mar 5 13:03:27 2021] usb 4-1: reset SuperSpeed Gen 1 USB device > > number 2 using xhci_hcd > > [Fri Mar 5 13:03:27 2021] usb 4-1: reset SuperSpeed Gen 1 USB device > > number 2 using xhci_hcd > > [Fri Mar 5 13:03:28 2021] usb 4-1: reset SuperSpeed Gen 1 USB device > > number 2 using xhci_hcd > > [Fri Mar 5 13:03:28 2021] usb 4-1: reset SuperSpeed Gen 1 USB device > > number 2 using xhci_hcd > > > > The usbmon-log is attached. > > > > Unsure how to interpret the log - the kernel-doc says `raw data`. > > How can I bring this into a human-readable format? > > Can you give me a hand? > > Don't worry about trying to decode the output. To me it looks like the > drive crashes and needs to be reset at times when the computer sends it > an ATA command. (Not all ATA commands, but some.) You can prevent this > by setting the following module parameter for the usb-storage driver: > > quirks=174c:55aa:t > > where the two numbers are the Vendor and Product IDs for the external > drive, and the 't' is a quirks flag saying not to use any ATA commands. > If this module parameter fixes the problem, we can add a permanent quirk > setting to the kernel. > Thanks Alan. I did: [ /etc/modules-load.d/usb-storage.conf ] # Add quirks for ATA commands for usb-storage devices connected to ASMedia M1042 USB-3.0 controller options usb-storage quirks=174c:55aa:t - EOF - It is: /lib/modules/5.12.0-rc1-11-amd64-clang13-cfi/kernel/drivers/usb/storage/usb-storage.ko But: root# lsmod | grep usb | grep storage usb_storage 90112 2 uas scsi_mod 307200 6 sd_mod,usb_storage,uas,libata,sg,sr_mod usbcore 385024 14 usbserial,xhci_hcd,ehci_pci,usbnet,usbhid,usb_storage,usb_wwan,uvcvideo,ehci_hcd,btusb,xhci_pci,cdc_ether,uas,option I have not rebooted yet. Interferences with PowerTop? These xhci-resets happen every 10mins in a sequence of 4. I have here a powertop.service (systemd) with passing --auto-tune option. That was not a problem with previous Linux-kernels >= v5.12-rc1, so. Alan, what do you think? - Sedat -
