Stanescu Victor <Victor.Stanescu@xxxxxxxxx> writes: > victor@victor-laptop:~$ lsusb -vd 03f0:521d [..] > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 4 > bAlternateSetting 1 > bNumEndpoints 3 Yup, there's the expected 3 endpoint altsetting. > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 129 > bNumInterfaces 3 > bConfigurationValue 2 > iConfiguration 3 configuration 1 > bmAttributes 0xa0 > (Bus Powered) > Remote Wakeup > MaxPower 500mA > Interface Association: > bLength 8 > bDescriptorType 11 > bFirstInterface 0 > bInterfaceCount 2 > bFunctionClass 2 Communications > bFunctionSubClass 14 > bFunctionProtocol 0 > iFunction 0 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 0 > bAlternateSetting 0 > bNumEndpoints 1 > bInterfaceClass 2 Communications > bInterfaceSubClass 14 > bInterfaceProtocol 0 > iInterface 0 > CDC Header: > bcdCDC 1.10 > CDC MBIM: > bcdMBIMVersion 1.00 > wMaxControlMessage 1024 > bNumberFilters 16 > bMaxFilterSize 20 > wMaxSegmentSize 1500 > bmNetworkCapabilities 0x20 > 8-byte ntb input size And this was what I was hoping for in the 2nd configuration. You should be able to use this with the cdc_mbim driver and a very recent ModemMananager without adding any device IDs. But I don't understand how you ended up with Linux selecting cfg #1 by default? I thought Linux would prefer cfg #2 here because the first interface has a proper class. Strange. In any case, you should be able to switch to it by using echo 2 > /sys/bus/usb/devices/x-y/bConfigurationValue where 'x-y' is the bus and port the device is connected to. Bjørn -- 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
