I'm seeing the same issue. Painfully slow USB 3.0 transfers with HP Elitebook 8560p and Seagate Freeagent USB 3.0 drive.
[ 4979.596702] xhci_hcd 0000:26:00.0: WARN: short transfer on control ep [ 4979.597238] xhci_hcd 0000:26:00.0: WARN: short transfer on control ep [ 4979.597859] xhci_hcd 0000:26:00.0: WARN: short transfer on control ep [ 4979.598483] xhci_hcd 0000:26:00.0: WARN: short transfer on control ep [ 4979.636909] usbcore: registered new interface driver uas [ 4979.645287] Initializing USB Mass Storage driver... [ 4979.645654] scsi6 : usb-storage 3-2:1.0 [ 4979.645887] usbcore: registered new interface driver usb-storage [ 4979.645891] USB Mass Storage support registered. [ 4980.644616] scsi 6:0:0:0: Direct-Access Seagate FreeAgent GoFlex 210 PQ: 0 ANSI: 0 [ 4980.646413] sd 6:0:0:0: Attached scsi generic sg2 type 0 [ 4980.647418] sd 6:0:0:0: [sdb] 1953525167 512-byte logical blocks: (1.00 TB/931 GiB) [ 4980.647560] xhci_hcd 0000:26:00.0: WARN: Stalled endpoint [ 4980.649408] sd 6:0:0:0: [sdb] Write Protect is off [ 4980.649417] sd 6:0:0:0: [sdb] Mode Sense: 0f 00 00 00 [ 4980.649831] sd 6:0:0:0: [sdb] No Caching mode page present [ 4980.649839] sd 6:0:0:0: [sdb] Assuming drive cache: write through [ 4980.651462] xhci_hcd 0000:26:00.0: WARN: Stalled endpoint [ 4980.652442] sd 6:0:0:0: [sdb] No Caching mode page present [ 4980.652449] sd 6:0:0:0: [sdb] Assuming drive cache: write through [ 4980.688587] sdb: sdb1 [ 4980.689580] xhci_hcd 0000:26:00.0: WARN: Stalled endpoint [ 4980.690571] sd 6:0:0:0: [sdb] No Caching mode page present [ 4980.690582] sd 6:0:0:0: [sdb] Assuming drive cache: write through [ 4980.690590] sd 6:0:0:0: [sdb] Attached SCSI disk [ 5010.982511] xhci_hcd 0000:26:00.0: WARN: Stalled endpoint [ 5010.983554] xhci_hcd 0000:26:00.0: WARN: Stalled endpoint [ 5011.020524] xhci_hcd 0000:26:00.0: WARN: Stalled endpoint [ 5011.054949] xhci_hcd 0000:26:00.0: WARN: Stalled endpoint [ 5011.087080] xhci_hcd 0000:26:00.0: WARN: Stalled endpoint [ 5011.087880] sd 6:0:0:0: [sdb] Sense Key : Recovered Error [current] [descriptor] [ 5011.087895] Descriptor sense data with sense descriptors (in hex): [ 5011.087900] 72 01 04 1d 00 00 00 0e 09 0c 00 00 00 00 00 00 [ 5011.087920] 00 4f 00 c2 40 50 [ 5011.087931] sd 6:0:0:0: [sdb] ASC=0x4 ASCQ=0x1d -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/647973 Title: USB 3.0 on 10.10 x86_64 : xhci_hcd WARN: Stalled endpoint To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/647973/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
