(cc linux-usb) On 07.10.2012 10:48, 王思源 wrote: > hi, > i have a usb 3.0 hard drive and a laptop with usb 3.0 port. > when the hard drive is connected to the usb 3.0 port, the drive could > not be found. > the dmesg output is listed below. > additinal info: > 1) the usb 3.0 hard drive can be found when connected to usb 2.0 port. > 2) the usb 2.0 hard drive can be found when connected to usb 3.0 port. > 3) mouse works when connected to the usb 3.0 port. > 4) it is archlinux and kernel version is 3.5.5-1-ARCH > it seems that it is not the linux driver's problem, because the mouse > could work and the hard drive is found due to the dmesg. > is this a bug? > would someone help me? > thank you! > > dmesg out put when usb 3.0 hard drive is conneted to usb 3.0 port: > [ 646.077385] usb 2-2: new SuperSpeed USB device number 2 using xhci_hcd > [ 646.171319] usbcore: registered new interface driver uas > [ 646.175313] Initializing USB Mass Storage driver... > [ 646.175501] scsi4 : usb-storage 2-2:1.0 > [ 646.175665] usbcore: registered new interface driver usb-storage > [ 646.175667] USB Mass Storage support registered. > [ 657.149403] scsi 4:0:0:0: Direct-Access WD My Passport > 0730 1016 PQ: 0 ANSI: 6 > [ 657.149974] sd 4:0:0:0: [sdb] 976707584 512-byte logical blocks: > (500 GB/465 GiB) > [ 657.150223] sd 4:0:0:0: [sdb] Write Protect is off > [ 657.150232] sd 4:0:0:0: [sdb] Mode Sense: 47 00 10 08 > [ 657.150456] sd 4:0:0:0: [sdb] No Caching mode page present > [ 657.150462] sd 4:0:0:0: [sdb] Assuming drive cache: write through > [ 657.151436] sd 4:0:0:0: [sdb] No Caching mode page present > [ 657.151440] sd 4:0:0:0: [sdb] Assuming drive cache: write through > [ 657.159907] sdb: sdb1 > [ 657.160852] sd 4:0:0:0: [sdb] No Caching mode page present > [ 657.160858] sd 4:0:0:0: [sdb] Assuming drive cache: write through > [ 657.160861] sd 4:0:0:0: [sdb] Attached SCSI disk > [ 657.268875] usb 2-2: Device not responding to set address. > [ 657.471456] usb 2-2: Device not responding to set address. > [ 657.674211] usb 2-2: device not accepting address 2, error -71 > [ 657.780745] usb 2-2: Device not responding to set address. > [ 657.983519] usb 2-2: Device not responding to set address. > [ 658.186214] usb 2-2: device not accepting address 2, error -71 > [ 658.292717] usb 2-2: Device not responding to set address. > [ 658.495537] usb 2-2: Device not responding to set address.
>From the logs, this smells like a power supply problem. Can you connect an external supply or do you have a powered USB3 hub? It's possible that it draws less power in USB2.0 mode, so that would explain what you describe. But I could be wrong alltogether :) Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
