Same Problem here on a Lenovo W520 i7 quad core, ubuntu 11.10
0e:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev
04) (prog-if 30 [XHCI])
Subsystem: Lenovo Device 21cf
Flags: bus master, fast devsel, latency 0, IRQ 18
Memory at d7100000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: xhci_hcd
Kernel modules: xhci-hcd
Dec 30 22:39:09 beast kernel: [ 140.239306] usb 4-1: new SuperSpeed USB device
number 4 using xhci_hcd
Dec 30 22:39:09 beast kernel: [ 140.257764] xhci_hcd 0000:0e:00.0: WARN: short
transfer on control ep
Dec 30 22:39:09 beast kernel: [ 140.258382] xhci_hcd 0000:0e:00.0: WARN: short
transfer on control ep
Dec 30 22:39:09 beast kernel: [ 140.259008] xhci_hcd 0000:0e:00.0: WARN: short
transfer on control ep
Dec 30 22:39:09 beast kernel: [ 140.259631] xhci_hcd 0000:0e:00.0: WARN: short
transfer on control ep
Dec 30 22:39:09 beast kernel: [ 140.260877] scsi7 : usb-storage 4-1:1.0
Dec 30 22:39:12 beast kernel: [ 143.950530] scsi 7:0:0:0: Direct-Access
WDC WD10 TPVT-00U4RT1 01.0 PQ: 0 ANSI: 5
Dec 30 22:39:12 beast kernel: [ 143.950640] scsi: killing requests for dead
queue
Dec 30 22:39:12 beast kernel: [ 143.951835] scsi: killing requests for dead
queue
Dec 30 22:39:12 beast kernel: [ 143.955881] scsi: killing requests for dead
queue
Dec 30 22:39:13 beast kernel: [ 144.019649] scsi: killing requests for dead
queue
Dec 30 22:39:13 beast kernel: [ 144.060307] scsi: killing requests for dead
queue
Dec 30 22:39:13 beast kernel: [ 144.060355] scsi: killing requests for dead
queue
Dec 30 22:39:13 beast kernel: [ 144.079533] scsi: killing requests for dead
queue
Dec 30 22:39:13 beast kernel: [ 144.147409] scsi: killing requests for dead
queue
Dec 30 22:39:13 beast kernel: [ 144.147637] sd 7:0:0:0: Attached scsi generic
sg2 type 0
Dec 30 22:39:13 beast kernel: [ 144.147908] sd 7:0:0:0: [sdb] 1953525168
512-byte logical blocks: (1.00 TB/931 GiB)
Dec 30 22:39:13 beast kernel: [ 144.148012] xhci_hcd 0000:0e:00.0: WARN:
Stalled endpoint
Dec 30 22:39:13 beast kernel: [ 144.148751] sd 7:0:0:0: [sdb] Write Protect is
off
Dec 30 22:39:13 beast kernel: [ 144.148755] sd 7:0:0:0: [sdb] Mode Sense: 23
00 00 00
Dec 30 22:39:13 beast kernel: [ 144.148860] xhci_hcd 0000:0e:00.0: WARN:
Stalled endpoint
Dec 30 22:39:13 beast kernel: [ 144.149531] sd 7:0:0:0: [sdb] No Caching mode
page present
Dec 30 22:39:13 beast kernel: [ 144.149533] sd 7:0:0:0: [sdb] Assuming drive
cache: write through
Dec 30 22:39:13 beast kernel: [ 144.150394] xhci_hcd 0000:0e:00.0: WARN:
Stalled endpoint
Dec 30 22:39:13 beast kernel: [ 144.151748] xhci_hcd 0000:0e:00.0: WARN:
Stalled endpoint
Dec 30 22:39:13 beast kernel: [ 144.152547] sd 7:0:0:0: [sdb] No Caching mode
page present
Dec 30 22:39:13 beast kernel: [ 144.152550] sd 7:0:0:0: [sdb] Assuming drive
cache: write through
Dec 30 22:39:13 beast kernel: [ 144.160436] sdb: sdb1
Dec 30 22:39:13 beast kernel: [ 144.160984] xhci_hcd 0000:0e:00.0: WARN:
Stalled endpoint
Dec 30 22:39:13 beast kernel: [ 144.161731] xhci_hcd 0000:0e:00.0: WARN:
Stalled endpoint
Dec 30 22:39:13 beast kernel: [ 144.162531] sd 7:0:0:0: [sdb] No Caching mode
page present
Dec 30 22:39:13 beast kernel: [ 144.162534] sd 7:0:0:0: [sdb] Assuming drive
cache: write through
Dec 30 22:39:13 beast kernel: [ 144.162535] sd 7:0:0:0: [sdb] Attached SCSI
disk
Dec 30 22:39:13 beast kernel: [ 144.172126] xhci_hcd 0000:0e:00.0: WARN:
Stalled endpoint
Dec 30 22:39:13 beast kernel: [ 144.174026] xhci_hcd 0000:0e:00.0: WARN:
Stalled endpoint
Dec 30 22:39:13 beast kernel: [ 144.174905] xhci_hcd 0000:0e:00.0: WARN:
Stalled endpoint
Dec 30 22:39:13 beast kernel: [ 144.286661] xhci_hcd 0000:0e:00.0: WARN:
Stalled endpoint
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https://bugs.launchpad.net/bugs/647973
Title:
USB 3.0: xhci_hcd WARN: Stalled endpoint
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