Description of problem: My Nokia has a slightly dodgy cable and can sometimes rapidly disappear and re-appear. Sometimes a valid /dev/ttyACM0 device is present, but ModemManager/NetworkManager appear ignorant of it. "killall modem-manager" then brings it back again. Version-Release number of selected component (if applicable): ModemManager-0.3-2.git20100211.fc12.x86_64 NetworkManager-0.7.998-2.git20100106.fc12.x86_64 Here's an example of the Nokia appearing on the system, but nothing from ModemManager: Mar 10 09:07:19 localhost kernel: usb 1-1: USB disconnect, address 34 Mar 10 09:07:21 localhost kernel: usb 1-3: new high speed USB device using ehci_hcd and address 35 Mar 10 09:07:22 localhost kernel: usb 1-3: device descriptor read/all, error -71 Mar 10 09:07:22 localhost kernel: usb 3-1: new full speed USB device using ohci_hcd and address 5 Mar 10 09:07:23 localhost kernel: usb 3-1: not running at top speed; connect to a high speed hub Mar 10 09:07:23 localhost kernel: usb 3-1: New USB device found, idVendor=0421, idProduct=010e Mar 10 09:07:23 localhost kernel: usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Mar 10 09:07:23 localhost kernel: usb 3-1: Product: Nokia E75 Mar 10 09:07:23 localhost kernel: usb 3-1: Manufacturer: Nokia Mar 10 09:07:23 localhost kernel: usb 3-1: SerialNumber: 359557011527518 Mar 10 09:07:23 localhost kernel: usb 3-1: configuration #1 chosen from 1 choice Mar 10 09:07:23 localhost kernel: cdc_acm 3-1:1.1: ttyACM0: USB ACM device Mar 10 09:07:23 localhost kernel: usb 3-1: bad CDC descriptors Mar 10 09:07:23 localhost kernel: usb 3-1: bad CDC descriptors Mar 10 09:07:23 localhost kernel: cdc_phonet: probe of 3-1:1.10 failed with error -22 (Note that the "probe failed", "bad CDC descriptors" is normal - happens every time). Note the ttyACM0 - the device is there. But ModemManager is silent. Then I do "killall modem-manager", and it restarts, and then we get: Mar 10 09:07:38 localhost modem-manager: (ttyACM0) closing serial device... Mar 10 09:07:38 localhost modem-manager: (ttyACM0) opening serial device... Mar 10 09:07:38 localhost modem-manager: (Nokia): GSM modem /sys/devices/pci0000:00/0000:00:13.1/usb3/3-1 claimed port ttyACM0 Mar 10 09:07:38 localhost modem-manager: (ttyACM0) closing serial device... Mar 10 09:07:38 localhost NetworkManager: <info> (ttyACM0): new GSM device (driver: 'cdc_acm') Mar 10 09:07:38 localhost NetworkManager: <info> (ttyACM0): exported as /org/freedesktop/NetworkManager/Devices/16 Mar 10 09:07:38 localhost NetworkManager: <info> (ttyACM0): now managed Mar 10 09:07:38 localhost NetworkManager: <info> (ttyACM0): device state change: 1 -> 2 (reason 2) Mar 10 09:07:38 localhost NetworkManager: <info> (ttyACM0): deactivating device (reason: 2). Mar 10 09:07:38 localhost NetworkManager: <info> (ttyACM0): device state change: 2 -> 3 (reason 0)
Can you do some debugging following the instructions here: http://live.gnome.org/NetworkManager/Debugging under the section "Debugging NetworkManager 0.8.x 3G connections" ? Then attach the modem-manager --debug log to this bug report when you are able to trigger the problem. Thanks!
I have this same bug. I'll follow the steps in comment #1. Dan, is there any reason /etc/init.d/NetworkManager stop doesn't kill modem-manager? It took me forever to find the root cause of this issue.i
This is also similar to bug 592994
(In reply to comment #2) > I have this same bug. I'll follow the steps in comment #1. > > Dan, is there any reason /etc/init.d/NetworkManager stop doesn't kill > modem-manager? It took me forever to find the root cause of this issue.i NM isn't the only thing that can use ModemManager actually. Stuff like GeoClue could use ModemManager for location-based services even if you're not connected via 3G at the time. So stopping it when NM isn't around might interfere with other users of ModemManager.
Waiting for James' info from comment 2...
(In reply to comment #5) > Waiting for James' info from comment 2... Hi Dan, I haven't had another reoccurrence of the issue yet. I'll update this when I get one.
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