For months now my mobile broadband (GSM) stick has worked with Crunchbang. Yesterday it stopped. When I plug it in, it appears in the network manager and I can connect to it, but as soon as it is connected it disconnects.I switched to Liquorix kernel about 1.5 weeks ago and the stick worked with it as well, until now. Switching back to the original kernel does not fix it.Computer:Lenovo U410GSM stick:Sierra Wireless USB 308Has anyone run into this before and knows how to fix it? EDIT: Added dmesg outputusb 1-1: new high-speed USB device number 5 using xhci_hcdusb 1-1: config 1 has an invalid interface number: 9 but max is 0usb 1-1: config 1 has no interface number 0usb 1-1: New USB device found, idVendor=1199, idProduct=0fffusb 1-1: New USB device strings: Mfr=3, Product=2, SerialNumber=4usb 1-1: Product: USB MMC Storageusb 1-1: Manufacturer: Sierra Wireless, Incorporatedusb 1-1: SerialNumber: SWOC22905731usb-storage 1-1:1.9: USB Mass Storage device detectedusb-storage: probe of 1-1:1.9 failed with error -5usbcore: registered new interface driver usb-storageusb 1-1: USB disconnect, device number 5usb 1-1: new high-speed USB device number 6 using xhci_hcdusb 1-1: config 1 has an invalid interface number: 7 but max is 4usb 1-1: config 1 has no interface number 2usb 1-1: New USB device found, idVendor=1199, idProduct=68a3usb 1-1: New USB device strings: Mfr=3, Product=2, SerialNumber=4usb 1-1: Product: USB 308usb 1-1: Manufacturer: Sierra Wireless, Incorporatedusb 1-1: SerialNumber: 355385035042361sierra 1-1:1.0: Sierra USB modem converter detectedusb 1-1: Sierra USB modem converter now attached to ttyUSB0sierra 1-1:1.1: Sierra USB modem converter detectedusb 1-1: Sierra USB modem converter now attached to ttyUSB1sierra 1-1:1.3: Sierra USB modem converter detectedusb 1-1: Sierra USB modem converter now attached to ttyUSB2sierra 1-1:1.4: Sierra USB modem converter detectedusb 1-1: Sierra USB modem converter now attached to ttyUSB3usb 1-1: Incompatible driver and firmware versionsusb 1-1: USB disconnect, device number 6sierra ttyUSB2: resubmit read urb failed.(-19)sierra ttyUSB2: resubmit read urb failed.(-19)sierra ttyUSB2: resubmit read urb failed.(-19)sierra ttyUSB2: resubmit read urb failed.(-19)sierra ttyUSB2: resubmit read urb failed.(-19)sierra ttyUSB2: resubmit read urb failed.(-19)sierra ttyUSB2: resubmit read urb failed.(-19)sierra ttyUSB2: resubmit read urb failed.(-19)sierra ttyUSB0: Sierra USB modem converter now disconnected from ttyUSB0sierra 1-1:1.0: device disconnectedsierra ttyUSB1: Sierra USB modem converter now disconnected from ttyUSB1sierra 1-1:1.1: device disconnectedsierra ttyUSB2: Sierra USB modem converter now disconnected from ttyUSB2sierra 1-1:1.3: device disconnectedsierra ttyUSB3: Sierra USB modem converter now disconnected from ttyUSB3sierra 1-1:1.4: device disconnectedEDIT: Trying to set usb_modeswitch:sudo usb_modeswitch -v 119 -p 68a3 -SOutput from that:Looking for default devices ...    No devices in default mode found. Nothing to do. Bye.EDIT: Fixed typo in the usb_modeswitch commandsudo usb_modeswitch -v 1199 -p 68a3 -SThe command ran properly that time but to no effect.
Mobile Broadband disconnects as soon as connected - Crunchbang
debian;modem;crunchbang;mobile
After testing the device on multiple computers and multiple OS's it would seem that there are hardware problems with the broadband stick.