Hi, I discovered the problem. I am using Openwrt and I was missing the module usb-serial-option. Using it everything works fine. The device modules and parameters are loaded and ttyUSB* are created. Thanks for all the help, Guilherme On Fri, Jul 20, 2012 at 3:47 AM, Bjørn Mork <bjorn@xxxxxxx> wrote: > Guilherme Bedin <gbedin@xxxxxxxxx> writes: > >> Thanks for explanation on how things work. >> The problem is if I don't pass the vendor and prodId the 3g modem is >> detect as an USB mass storage. Even after using usb_modeswitch >> >> usb_modeswitch -default-vendor 0x19d2 -default-product 0×2000 >> -target-vendor 0x19d2 -target-product 0×0031 -message-endpoint 0×01 >> -message-content 555342431234567 >> 82000000080000c85010101180101010101000000000000 >> >> I am running on: >> Linux OpenWrt 3.3.8 #1 Mon Jul 9 20:09:35 MSK 2012 mips GNU/Linux >> >> With: >> >> Modem 3g >> >> D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 >> P: Vendor=19d2 ProdID=0031 Rev= 0.00 > > That device was added to the option driver almost 3 years ago, so the > driver support should be OK. But you might be interested in this > recent discussion of modeswitch problems with exactly that device: > > http://www.draisberghof.de/usb_modeswitch/bb/viewtopic.php?t=951 > > I suspect you are hit by the same problem, causing usb_modeswitch to > switch the modem twice. > > All thanks to the genious in ZTE who is responsible for reusing the same > device ID for switched and unswitched mode in different devices. So > 19d2:0031 is the target ID for some devices like yours, but it is the > default unswitched ID for others... Thank you, ZTE. That's just brilliant. > > But anyway, try upgrading to the latest usb_modeswitch_data. If that > doesn't work, enable usb_modeswitch logging to verify that the problem > really is double switching. Then look at > /lib/udev/rules.d/40-usb_modeswitch.rules > and see if it's possible to tweak the rules to avoid this. > > Or just create an empty 19d2:0031 config to disable the second switch. > But that is only a local workaround, since there are devices with this > ID shich need switching. > > > 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
