On Wed, Aug 14, 2013 at 11:43:37AM -0500, Peter Hyman wrote: > Linux Kernel: 3.9.10 > Device Driver: usb/serial/sierra.c > Device Driver version: not known > > Apparently Sierra has sold the AirCard 250U product to Netgear, so I am > sure driver development on drivers/usb/serial/sierra.c will be in limbo > for a period. While I am copying linux@xxxxxxxxxxxxxxxxxx, they will not > do anything since they don't own the product anymore. > > Nonetheless, I uncovered a problem when using the AC250U Aircard device > Vendor 0x1199, Product 0x0301. If the device is used in Windows and set > to 4G mode, using the device in Linux will fail to create the ppp0 > network interface. I could find no workaround. Even though the device > can be reached and modem commands sent, ppp0 won't be created. I > regression tested this all the way back to kernel 3.2.29, and I also > tried the unpublished sierra driver 1.7.40 which works up to kernel > 3.4.x iirc. The issue is the same. > > The workaround is to set the device to 3G mode and then use in Linux. I > wrote this FAQ in case it is of interest. How do you set the device to 3G mode? Can this be done in Linux using the latest version of modemmanager and networkmanager? thanks, greg k-h -- 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
