Tried 4.0-rc4 on vivid and saw none of the xhci error messages I saw on 3.19. I performed exactly the same operation using the same hardware, namely ddrescuing an ~7.5GB image to an 8GB stick.
alan@deep-thought:/data/usb⟫ dmesg -T | grep xhci_hcd [Mon Mar 16 19:48:40 2015] xhci_hcd 0000:0e:00.0: xHCI Host Controller [Mon Mar 16 19:48:40 2015] xhci_hcd 0000:0e:00.0: new USB bus registered, assigned bus number 1 [Mon Mar 16 19:48:40 2015] xhci_hcd 0000:0e:00.0: hcc params 0x014042cb hci version 0x96 quirks 0x00000004 [Mon Mar 16 19:48:40 2015] xhci_hcd 0000:0e:00.0: xHCI Host Controller [Mon Mar 16 19:48:40 2015] xhci_hcd 0000:0e:00.0: new USB bus registered, assigned bus number 2 [Mon Mar 16 19:49:49 2015] usb 2-1: new SuperSpeed USB device number 2 using xhci_hcd [Mon Mar 16 19:49:50 2015] usb 1-1: new high-speed USB device number 2 using xhci_hcd [Mon Mar 16 19:49:59 2015] usb 2-1.3: new SuperSpeed USB device number 3 using xhci_hcd [Mon Mar 16 19:54:59 2015] usb 2-1.3: new SuperSpeed USB device number 4 using xhci_hcd -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1371233 Title: USB 3.0 connection is unreliable + xHCI xhci_drop_endpoint called with disabled ep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1371233/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
