On Mon, 19 Oct 2009, Ming-Ching Tiew wrote: > Sorry the previous mail was sent without a subject. > > --- On Mon, 10/19/09, Ming-Ching Tiew <mctiew@xxxxxxxxx> wrote: > > > From: Ming-Ching Tiew <mctiew@xxxxxxxxx> > > Subject: > > To: linux-usb@xxxxxxxxxxxxxxx > > Date: Monday, October 19, 2009, 8:35 PM > > I am trying to use the gadmei UTV 380 > > which I bought a little while ago. > > > > I am using kernel 2.6.28.4, I downloaded the entire > > ~dougsland/em28xx > > and did a make and install. Everything went on smoothly. > > However, when I plug in the gadmei UTV 380 usb device, it > > seems the driver can get loaded by the usb pnp, but at the > > same time, one of my usb pendrive will get disconnected. > > Because that's my boot drive ( I boot off from the usb drive > > ), that will cause problem with my system. > > > > I have also tested with the latest kernel 2.6.31.4, this > > time it's a stock kernel as far as usb and em28xx drivers > > are concerned, but it also gives the same problem too. And I > > also confirmed the the same device and the same computer is > > working with Windows vista ( because I dual boot), that is > > to rule out the possibility of hardware related problems. > > > > Include please find the dmesg log I obtained for kernel > > 2.6.28.4. There is similar dmesg for kernel 2.6.31.4. The log indicates that your pendrive encountered hardware errors when the UTV device was plugged in. Without more information it's impossible to tell what caused the hardware errors. You should try collecting a usbmon trace -- but you'll have to write the output file to a networked filesystem, since storing it on the pendrive won't work. The fact that the device works under Windows doesn't rule out hardware problems. You might try buying a powered hub and then plugging either the pendrive or the UTV into the hub. It's possible that this will fix the problem. 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
