On Sat, 2014-01-11 at 18:17 +0800, yoma sophian wrote: > hi all: > I got one segate external usb3.0 HD. > When I plug in that device, I will get below error message repeatedly: > > [ 432.191560] usb 4-1: Set SEL for device-initiated U2 failed. Is that after the initial plug? > [ 432.191664] usb 4-1: USB disconnect, device number 12 > [ 469.061694] xhci_hcd 0000:00:14.0: Timeout while waiting for > address device command > [ 474.271626] xhci_hcd 0000:00:14.0: Timeout while waiting for > address device command > [ 474.475859] usb 4-1: device not accepting address 13, error -62 > [ 474.592197] usb 4-1: new SuperSpeed USB device number 14 using xhci_hcd > [ 474.609564] usb 4-1: New USB device found, idVendor=0bc2, idProduct=a0a5 > [ 474.609569] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 > [ 474.609572] usb 4-1: Product: Backup+ Desk > [ 474.609574] usb 4-1: Manufacturer: Seagate > [ 474.609576] usb 4-1: SerialNumber: NA5J3BMX > [ 474.613800] usb 4-1: Enable of device-initiated U2 failed. > [ 474.617303] usb 4-1: Disable of device-initiated U1 failed. > [ 474.620807] usb 4-1: Disable of device-initiated U2 failed. It looks like your device has a problem with runtime power management. > [ 474.620840] usb-storage 4-1:1.0: USB Mass Storage device detected > [ 474.620928] scsi17 : usb-storage 4-1:1.0 > [ 474.624340] usb 4-1: Set SEL for device-initiated U1 failed. > [ 479.629776] usb 4-1: Set SEL for device-initiated U2 failed. > [ 479.798030] usb 4-1: USB disconnect, device number 14 > > > 1. My kernel version is Linux 3.13.0-rc6 Can you try a kernel compiled without CONFIG_PM? Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html