On Mon, 3 Sep 2012, Marek Floriańczyk wrote: > HI, > > Debian testing, kernel 3.2.0-3 and results are the same. Order in which I call > devices is important, first device I call always gives reply, second one almost > never, no matter on what bus number they are. When I insert some delay between > commands (500 ms) everything works fine - i got reply from both devices, > always. > Unfortunately I don't have usb tester, but maybe I will try to do test app on > windows, so I will get some confirmation. This is puzzling. Since the devices are on different buses, they should be totally independent, right? Unless they can communicate over some other medium (not USB). Can you try running the program on a different computer, to help rule out USB hardware problems on the motherboard? 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
