On Friday 23 November 2012 14:40:37 Jan Pohanka wrote: > I have tried to reproduce this behavior directly on my PC, but there it > works like a charm - at first I thought that the problem lies in cdc_acm > driver, but today I tried to desolder the hub and connect the USB modem > directly to the SoC. And voila it works too and I can use both ACM > interfaces at time (one for ppp connection and second for maintenance and > voice commands). But I definetely need a hub there... > > Could please someone give me some explanation how and why the 2414b USB > HUB can do such problems and if there is any way how to fix it? A trace with usbmon as described in Documentation/usb should show what IO goes wrong. Regards Oliver -- 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
