hi, Daniel my usb 3.0 hard drive doesn't have external power. this is a "western digital" usb hard drive: WDBACY5000AWT here is a Product Specifications: http://www.wdc.com/wdproducts/library/AAG/ENG/4178-705131.pdf i start my laptop with ubuntu, the usb3.0 port could use the usb3.0 hard drive. but the write speed is only 50MB/s (test with dd) but archlinux cannot recognize the hard drive. thank you for replaying. On Mon, Oct 8, 2012 at 5:31 AM, Daniel Mack <zonque@xxxxxxxxx> wrote: > (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 > -- 王思源 -- 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
