CR48 Mobile broadband from CR48 in F17 (Gobi)

[patrick]

I am trying to get the mobile broadband connection from a CR48 netbook working with Fedora. I have previously had it working with Ubuntu, so I know it should be possible .


I have compiled the gobi_loader program from http://www.codon.org.uk/~mjg59/gobi_loader/ and installed the rpm. I have the firmware for the gobi in /lib/firmware/gobi

lsusb lists the device:

Bus 001 Device 002: ID 1410:a014 Novatel Wireless

Unloading and loading the qcserial module shows this in messages:

[ 2029.816758] USB Serial deregistering driver Qualcomm USB modem
[ 2029.820985] qcserial ttyUSB0: Qualcomm USB modem converter now disconnected from ttyUSB0
[ 2029.821198] usbcore: deregistering interface driver qcserial
[ 2029.821402] qcserial 1-2:1.1: device disconnected
[ 2035.558045] usbcore: registered new interface driver qcserial
[ 2035.558115] USB Serial support registered for Qualcomm USB modem
[ 2035.558182] qcserial 1-2:1.1: Qualcomm USB modem converter detected
[ 2035.560784] usb 1-2: Qualcomm USB modem converter now attached to ttyUSB0

/dev/ttyUSB0 indeed exists, but NetworkManager seems completely unaware of it.

Am I missing some steps? Has anyone had success with this?


Running the gobi_loader program manually (instead of relying on the supplied udev rules) and pointing it to ttyUSB0 seems to hang the gobi_loader program and nothing is loaded.

[dobbi]

When you run Ubuntu on top of ChromeOS, you can boot up ChromeOS to init the Gobi fw and then reboot to Ubuntu to use it. That works up until the next suspend or reboot whatever.

While it's working, though, Ubuntu uses /dev/ttyUSB1 where it finds ANOTHER Qualcomm modem. Example:

---snip---
Jun 29 22:24:31 CR-48 kernel: [ 4.590716] gobi: 1.0.110+google+w0
Jun 29 22:24:31 CR-48 kernel: [ 4.599645] gobi 1-2:1.0: usb0: register 'gobi' at usb-0000:00:1d.7-2, QCUSBNet Ethernet Device, xx:xx:xx:xx:xx:xx
---snip---
Jun 29 22:24:31 CR-48 kernel: [ 4.886458] qcserial 1-2:1.1: Qualcomm USB modem converter detected
Jun 29 22:24:31 CR-48 kernel: [ 4.886779] usb 1-2: Qualcomm USB modem converter now attached to ttyUSB0
Jun 29 22:24:31 CR-48 kernel: [ 4.888701] qcserial 1-2:1.2: Qualcomm USB modem converter detected
Jun 29 22:24:31 CR-48 kernel: [ 4.889171] usb 1-2: Qualcomm USB modem converter now attached to ttyUSB1
Jun 29 22:24:31 CR-48 kernel: [ 4.889267] usbcore: registered new interface driver qcserial
Jun 29 22:24:31 CR-48 kernel: [ 4.890169] usbcore: registered new interface driver gobi
---snip---

and then when you sleep/wake up... just the ttyUSB0 by itself.

---snip---
Jun 29 22:30:42 CR-48 kernel: [ 67.915780] gobi 1-2:1.0: usb0: unregister 'gobi' usb-0000:00:1d.7-2, QCUSBNet Ethernet Device
Jun 29 22:30:42 CR-48 kernel: [ 67.936553] gobi: write_sync: unable to resume interface: -11 (cid=0x0000)
Jun 29 22:30:42 CR-48 kernel: [ 67.936564] gobi: cid_free: failed to write releasecid request: -11
Jun 29 22:30:42 CR-48 kernel: [ 67.936572] gobi: wds_callback: no read found
Jun 29 22:30:42 CR-48 kernel: [ 67.937159] qcserial ttyUSB0: Qualcomm USB modem converter now disconnected from ttyUSB0
Jun 29 22:30:42 CR-48 kernel: [ 67.937225] qcserial 1-2:1.1: device disconnected
Jun 29 22:30:42 CR-48 kernel: [ 67.937587] qcserial ttyUSB1: Qualcomm USB modem converter now disconnected from ttyUSB1
Jun 29 22:30:42 CR-48 kernel: [ 67.937649] qcserial 1-2:1.2: device disconnected
---snip---
Jun 29 22:30:42 CR-48 kernel: [ 68.156810] usb 1-2: New USB device found, idVendor=1410, idProduct=a014
Jun 29 22:30:42 CR-48 kernel: [ 68.156822] usb 1-2: New USB device strings: Mfr=3, Product=2, SerialNumber=0
Jun 29 22:30:42 CR-48 kernel: [ 68.156830] usb 1-2: Product: Gobi 2000
Jun 29 22:30:42 CR-48 kernel: [ 68.156837] usb 1-2: Manufacturer: Qualcomm Incorporated
Jun 29 22:30:42 CR-48 kernel: [ 68.160404] qcserial 1-2:1.1: Qualcomm USB modem converter detected
Jun 29 22:30:42 CR-48 kernel: [ 68.160691] usb 1-2: Qualcomm USB modem converter now attached to ttyUSB0
---snip---

[patrick]

Maybe I went a bit overboard, but I flashed the normal bios over the stock one. I don't have chromeos on the machine any more.