On Fri, 23 Jan 2015 prasnik@xxxxxxxx wrote: > Hi. The device in question is the external usb hdd Seagate Expansion 1TB. > It claims to be usb 3.0 and also to be usable on usb 2.0 systems. > Vendor and device ids are 0bc2 and 2312. > > I have tested it on the fresh 3.18.3 from kernel.org, on a laptop with usb 2.0 > (I guess). > > According to [1] and [2], I simply plugged in the device without stating > any quirk or (as suggested in [3]) delay_use option for usb-storage under > /etc/modprobe.d/. The result is that the disk gets never recognized by the system, > as better showed in the (bottom part of the) attached dmesg output. > > I also tried by stating 'quirks' and 'delay_use' as suggested in [2] and [3], > in every combination, also on older kernels, obtaining the same result. Please post a usbmon trace showing what happens when you plug in the drive. Alan Stern -- 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
