On Wed, 2010-06-02 at 12:54 -0400, Daenyth Blank wrote: > On Wed, Jun 2, 2010 at 08:12, Daenyth Blank <[email protected]> wrote: > > On Wed, Jun 2, 2010 at 03:16, Dan Williams <[email protected]> wrote: > >> On Thu, 2010-05-27 at 12:04 -0400, Daenyth Blank wrote: > >>> Hi all, > >>> > >>> I'm trying to find out some information regarding the Sprint U301 3G > >>> modem. Our use case for it is that it will be attached to an embedded > >>> machine running ubuntu with networkmanager, in addition to our > >>> software. I've been trying to get this modem to connect reliably and > >>> am having some issues with it. I've added a udev rule so that the > >>> usbserial driver is given the correct vendor/product information, and > >>> it connects automatically on boot, but not reliably. Some boots it > >>> does not connect at all and won't until I reboot. Sometimes it > >>> disconnects while the machine is running. If it disconnects either by > >>> itself or from deactivating the connection, it will not connect again > >>> and needs a reboot. The nm/mm logs say that serial requests are timing > >>> out when it's in the non-connected state. I haven't been able to > >>> recover from the disconnected state with anything about a reboot. > >>> > >>> Is there anything we can do with this device to increase reliability? > >>> Failing that, can you recommend a usb Sprint 3G modem that will be > >>> more reliable? If there are none, do you have any recommendations for > >>> any brand of 3G modem that will work well in this situation? The boxes > >>> will be deployed where manual access is not easy, so it needs to be > >>> able to connect and recover from disconnections automatically, or at > >>> least in a way that can be scripted easily. > >> > >> You're certainly not going to be able to get the WiMAX part of the > >> device working automatically since we dont' have drivers for the Beceem > >> chipset of the WiMAX side. However, the EVDO side should work with > >> cdc-acm, so if you have to use 'usb-serial' there's already something > >> wrong. > >> > >> I suspect you need to use usb_modeswitch to eject the fake CD that the > >> device provides too, correct? > >> > >> Honestly, UTStarcom-based devices (which the 300 and 301 are rebrands > >> of) often don't work that well as you've found out. I'd recommend a > >> Sierra device instead, as Sierra is also very active in Linux kernel > >> development and has great support for their devices. > >> > >> Dan > >> > >> > > > > Thanks Forest, Dan. I'm going to recommend to our client that we use > > the Sierra cards. Appreciate the advice! > > > > I'm looking into the 598 now, and I'm having a little trouble getting > NM to recognize it. I plug in the device and I can see by using dmesg > that the sierra driver gets loaded, but when I run > nm-connection-editor and try to edit the connection, it doesn't get > listed in the device dropdown. Is there anything I have to do to get > it recognized? I also haven't been able to find any good guides on > setting it up. I'm running Ubuntu Karmic right now.
It should show up in the menu after a few seconds. Try grabbing some debugging information as described here to figure out why things aren't working: http://live.gnome.org/NetworkManager/Debugging under the "Debugging NetworkManager 0.8.x 3G connections" section. Basically, we want to get modem-manager logs to find out why the modem doesn't appear to be found. Dan _______________________________________________ networkmanager-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/networkmanager-list
