On Wed, 16 Nov 2011 starlight@xxxxxxxxxxx wrote: > Final detail: > > The fellow experiencing the identical problem with > both Gentoo and mainline 3.1.1 reports that his > failing USB3 enclosure reports itself as a > JMicron USB3-to-SATA bridge: > The failure behavior is a perfect match to the WDC > MyBook device here, which strongly suggests that > WD is using this controller but as taken the extra > effort to replace the device strings. > > If anyone else has a USB3 drive enclosure with > this controller or a MyBook, it would be > interesting to see if they can reproduce this > issue. Be sure that 4K sectors are aligned for > the test. Default partitions created with 'fdisk' > are off by one sector and will slow it down, > possibly enough to hide the bug. Can you capture a usbmon trace showing the problem? If we had some idea of what was going wrong, that might help point people in the right direction for fixing it. 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
