On Tue, 13 Jan 2009, Igor Lopez wrote: > I have now made a usbmon log according to the documentation. I did it > with the generic Kernel shipped with Ubuntu AMD64 and the result looks > similar as the information from my core2 kernel with USB_DEBUG in the > config. (but different format of course) The logs show two major problems. The first is a problem with your disk drive. It was working fine with EHCI until the system tried to read the last sector on the disk. At that point the drive died, and it didn't respond again until the computer began communicating using OHCI. Oddly enough, when the system tried to read the last sector again (using OHCI this time) the drive worked fine. So your Western Digital drive (or its USB interface) has a bug. Can you collect the equivalent kern.log for the USB flash drive? I wouldn't expect two different sorts of devices to have the same bug. The other problem is what makes your logs so big. All those lines like: Jan 4 21:41:34 lopezdev kernel: [ 286.344268] hub 1-0:1.0: state 7 ports 3 chg 0000 evt 0000 Jan 4 21:41:34 lopezdev kernel: [ 286.344289] hub 2-0:1.0: state 7 ports 3 chg 0000 evt 0000 Jan 4 21:41:34 lopezdev kernel: [ 286.344299] hub 3-0:1.0: state 7 ports 3 chg 0000 evt 0000 should not be there. I have no idea why you're getting them. Can you try running 2.6.28 to see if the same thing happens? 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
