[Bug 647973] Re: Slow speeds & I/O errors with USB 3.0

[Adrien Béraud]

I search a bit on the web and the bug is probably the same as this one on OpenSUSE :
http://web.archiveorange.com/archive/v/u1yF73zHn2N1QI2D1LPY


** Description changed:

  I just bought an Asus N43JF with a USB 3.0 port, and I have a Supertalent 16GB USB 3.0 flash drive.
- I'm using Ubuntu 10.10 with kernel 2.6.35-22-generic
+ I'm using Ubuntu 10.10 x86_64 with kernel 2.6.35-22-generic
  
  The flash drive is correctly recognized and I can successfully copy
  files, but it's very slow (max. 1.4MiB/sec).
  
  I'm not sure which device provides the USB 3.0 port, but i think it corresponds to this line in lspci :
  04:00.0 USB Controller: Device 1b73:1400 (rev 01)
  
  Here is a typical part of kern.log I get. I would be happy to provide
  more informations.
  
  Sep 26 16:25:14 adrien-laptop kernel: [12310.874322] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
  Sep 26 16:25:14 adrien-laptop kernel: [12310.875131] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
  Sep 26 16:25:14 adrien-laptop kernel: [12310.893659] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
  Sep 26 16:25:14 adrien-laptop kernel: [12310.894346] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
  Sep 26 16:25:14 adrien-laptop kernel: [12310.913759] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
  Sep 26 16:25:45 adrien-laptop kernel: [12341.072246] usb 3-1: reset SuperSpeed USB device using xhci_hcd and address 2
  Sep 26 16:25:45 adrien-laptop kernel: [12341.092602] xhci_hcd 0000:04:00.0: WARN: short transfer on control ep
  Sep 26 16:25:45 adrien-laptop kernel: [12341.092651] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880099238680
  Sep 26 16:25:45 adrien-laptop kernel: [12341.092664] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800992386c0
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093288] sd 6:0:0:0: [sdb] Unhandled error code
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093295] sd 6:0:0:0: [sdb] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093302] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 01 1d 86 d7 00 00 f0 00
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093319] end_request: I/O error, dev sdb, sector 18712279
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093327] quiet_error: 20 callbacks suppressed
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093333] Buffer I/O error on device sdb1, logical block 2339027
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093345] Buffer I/O error on device sdb1, logical block 2339028
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093351] Buffer I/O error on device sdb1, logical block 2339029
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093357] Buffer I/O error on device sdb1, logical block 2339030
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093362] Buffer I/O error on device sdb1, logical block 2339031
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093368] Buffer I/O error on device sdb1, logical block 2339032
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093374] Buffer I/O error on device sdb1, logical block 2339033
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093379] Buffer I/O error on device sdb1, logical block 2339034
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093385] Buffer I/O error on device sdb1, logical block 2339035
  Sep 26 16:25:45 adrien-laptop kernel: [12341.093390] Buffer I/O error on device sdb1, logical block 2339036
  Sep 26 16:25:45 adrien-laptop kernel: [12341.126947] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
  Sep 26 16:25:45 adrien-laptop kernel: [12341.127492] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
  Sep 26 16:25:45 adrien-laptop kernel: [12341.478532] xhci_hcd 0000:04:00.0: WARN: transfer error on endpoint
  Sep 26 16:25:45 adrien-laptop kernel: [12341.592601] usb 3-1: reset SuperSpeed USB device using xhci_hcd and address 2
  Sep 26 16:25:45 adrien-laptop kernel: [12341.611819] xhci_hcd 0000:04:00.0: WARN: short transfer on control ep
  Sep 26 16:25:45 adrien-laptop kernel: [12341.611858] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880099238680
  Sep 26 16:25:45 adrien-laptop kernel: [12341.611863] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800992386c0
  Sep 26 16:25:45 adrien-laptop kernel: [12341.612159] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
  Sep 26 16:25:45 adrien-laptop kernel: [12341.612461] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint

** Summary changed:

- Slow speeds & I/O errors with USB 3.0
+ USB 3.0 on 10.10 x86_64 : xhci_hcd WARN: Stalled endpoint

** Tags added: usb3.0
** Tags removed: 3.0

-- 
USB 3.0 on 10.10 x86_64 : xhci_hcd WARN: Stalled endpoint
https://bugs.launchpad.net/bugs/647973
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