Epi Valley SXC 1080 USB CDMA modem not being detected on Ubuntu 8.10 desktop edition

[Antony John]

Binary package hint: network-manager

I am using a mobile broadband modem (Epi Valley SXC 1080: http://eng.sungiltel.com/products/sxc-1080.html) provided to me by my ISP: Tata Indicom (PlugToSurf). There is a connection profile for this ISP already available in
the nm-applet (0.7) setup wizard.

But the Network manager daemon fails to retrieve data from the USB CDMA Modem
provided to me with the following output.

In the kernel log I am getting the following entries:
Dec 4 16:37:10 xendor kernel: [ 139.164057] usb 3-2: new full speed USB device using uhci_hcd and address 2
Dec 4 16:37:10 xendor kernel: [ 139.284053] usb 3-2: device descriptor read/64, error -71
Dec 4 16:37:10 xendor kernel: [ 139.508054] usb 3-2: device descriptor read/64, error -71
Dec 4 16:37:10 xendor kernel: [ 139.724061] usb 3-2: new full speed USB device using uhci_hcd and address 3
Dec 4 16:37:10 xendor kernel: [ 139.844056] usb 3-2: device descriptor read/64, error -71
Dec 4 16:37:11 xendor kernel: [ 140.068055] usb 3-2: device descriptor read/64, error -71
Dec 4 16:37:11 xendor kernel: [ 140.284055] usb 3-2: new full speed USB device using uhci_hcd and address 4
Dec 4 16:37:11 xendor kernel: [ 140.700056] usb 3-2: device not accepting address 4, error -71
Dec 4 16:37:11 xendor kernel: [ 140.756085] hub 3-0:1.0: unable to enumerate USB device on port 2
Dec 4 16:37:12 xendor kernel: [ 141.256058] usb 3-2: new full speed USB device using uhci_hcd and address 6
Dec 4 16:37:12 xendor kernel: [ 141.489077] usb 3-2: configuration #1 chosen from 1 choice
Dec 4 16:37:13 xendor kernel: [ 142.076899] cdc_acm 3-2:1.0: ttyACM0: USB ACM device
Dec 4 16:37:13 xendor kernel: [ 142.080343] usbcore: registered new interface driver cdc_acm
Dec 4 16:37:13 xendor kernel: [ 142.082790] cdc_acm: v0.26:USB Abstract Control Model driver for USB modems and ISDN adapters

And the Daemon Log lists the following entry
Dec 4 16:37:13 xendor NetworkManager: <debug> [1228388833.425166] probe_modem(): Couldn't get caps

I think it is because the modem device I am using is not providing a well formed reply. In such cases which do happen the nm-applet should allow the user a manual override to do connection setup of device manually through PPP. I believe in the 0.7 the ability to do this manually has been removed.

Programs like WVDial meanwhile works perfectly with the device but unfortunately doesnot integrate with network manager. If the trend is to make NetworkManager the defacto network setup and management tool, it is mandatory
that the program handle dialup modems perfectly.

[beyboo (beyboo)]

Same here with Tata Indicom Plug2surf sxc-1080 modem

kernel: [51776.856156] usb 4-1: new full speed USB device using uhci_hcd and address 35
kernel: [51776.976156] usb 4-1: device descriptor read/64, error -71
kernel: [51777.200183] usb 4-1: device descriptor read/64, error -71
kernel: [51777.416155] usb 4-1: new full speed USB device using uhci_hcd and address 36
kernel: [51777.537460] usb 4-1: device descriptor read/64, error -71
kernel: [51777.760635] usb 4-1: device descriptor read/64, error -71
kernel: [51777.977072] usb 4-1: new full speed USB device using uhci_hcd and address 37
kernel: [51778.389055] usb 4-1: device not accepting address 37, error -71
kernel: [51778.445185] hub 4-0:1.0: unable to enumerate USB device on port 1
kernel: [51779.089121] usb 4-1: new full speed USB device using uhci_hcd and address 39
kernel: [51779.313291] usb 4-1: configuration #1 chosen from 1 choice
kernel: [51779.316808] cdc_acm 4-1:1.0: ttyACM0: USB ACM device
NetworkManager: <debug> [1230968350.069170] probe_modem(): Couldn't get caps

[Pedro Villavicencio (pedro)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue that you reported is one that should be reproducible with the live environment of the Desktop CD of the development release the Karmic Koala. It would help us greatly if you could test with it so we can work on getting it fixed in the next release of Ubuntu. You can find out more about the development release at http://www.ubuntu.com/testing/ . Thanks again and we appreciate your help.

[Pedro Villavicencio (pedro)]

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to New. Thanks again!.