On Sat, 30 Jan 2010, Klaus Doblmann wrote: > Hi guys, > > I've been investigating a mount-failure of USB hard drives for a few > days now and have reached a dead end - I hope I'm adressing the right > mailing list here, if not, please direct me towards the right list. > > I have two identical external hard-drive enclosures from the same vendor > (CnMemory) using the Genesys Logic GL830 chip which I bought about one > year apart. > > One works just fine, the other fails to mount on all three machines I > have tested this on (One IBM T40, one Lenovo T500, one Apple iMac). All > machines are running the 2.6.32 kernel-series which seems to be part of > the problem because both enclosures work on previous kernels. I haven't > yet had a chance to try a -33 kernel due to the time I have available. > (I'm on Ubuntu, running the development series of 10.04 but I have > tested vanilla kernels too, including the latest stable variant > 2.6.32-7) The first step toward debugging the problem is to acquire a usbmon trace showing what happens when you plug in the faulty drive. Instructions are in the kernel source file Documentation/usb/usbmon.txt. 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
