Public bug reported:
uname -a: Linux home 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:50:42 UTC
2011 i686 i686 i386 GNU/Linux
network-manager: 0.9.1.90-0ubuntu3
modemmanager: 0.5-1ubuntu1
--------------------------
If I connect to a 3G network, keep the connection open (stay connected),
and either restart a computer or stop-start network-manager, the modem
(Huawei E173) will not be "detected" anymore (cannot open port). Worked
fine in Natty.
Ways to fix: unplug the modem AND stop-start network-manager (which
stops-starts modemmanager), plug modem back in.
Seems like the modem "keeps connection open" while still being powered on and
cannot be initialized properly. Very irritating since it cannot be fixed
without modem unplugging.
Full debug info below.
Details in short (see attached files for full debug info):
Modem after connecting to 3G network, then either restarting the computer or
restarting network-manager (syslog):
Oct 15 08:54:08 home kernel: [ 9.435382] USB Serial support registered for
GSM modem (1-port)
Oct 15 08:54:08 home kernel: [ 9.436317] option 1-6:1.0: GSM modem (1-port)
converter detected
Oct 15 08:54:08 home kernel: [ 9.436478] usb 1-6: GSM modem (1-port)
converter now attached to ttyUSB0
Oct 15 08:54:08 home kernel: [ 9.436522] option 1-6:1.3: GSM modem (1-port)
converter detected
Oct 15 08:54:08 home kernel: [ 9.436611] usb 1-6: GSM modem (1-port)
converter now attached to ttyUSB1
Oct 15 08:54:08 home kernel: [ 9.436622] option 1-6:1.4: GSM modem (1-port)
converter detected
Oct 15 08:54:08 home kernel: [ 9.436703] usb 1-6: GSM modem (1-port)
converter now attached to ttyUSB2
Oct 15 08:54:08 home kernel: [ 9.436766] option: v0.7.2:USB Driver for GSM
modems
Oct 15 08:54:08 home modem-manager[877]: <info> ModemManager (version 0.5)
starting...
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Novatel
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Option High-Speed
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin AnyData
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin X22X
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Nokia
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Wavecom
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin SimTech
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin ZTE
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Generic
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Linktop
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Samsung
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Ericsson MBM
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Sierra
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin MotoC
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Option
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Gobi
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Huawei
Oct 15 08:54:08 home modem-manager[877]: <info> Loaded plugin Longcheer
Oct 15 08:54:08 home modem-manager[877]: <info> (ttyUSB0) opening serial
port...
Oct 15 08:54:08 home NetworkManager[882]: <info> modem-manager is now available
Oct 15 08:54:08 home NetworkManager[882]: <info> modem-manager is now available
Oct 15 08:55:05 home modem-manager[877]: <info> (ttyUSB0) closing serial
port...
Oct 15 08:55:05 home modem-manager[877]: <info> (ttyUSB0) serial port closed
Oct 15 08:55:05 home modem-manager[877]: <info> (ttyUSB0) opening serial
port...
Oct 15 08:55:11 home modem-manager[877]: <info> (ttyUSB0) closing serial
port...
Oct 15 08:55:11 home modem-manager[877]: <info> (ttyUSB0) serial port closed
---------------------------------------------------
PROPER (expected to be permanent) modem functioning (syslog):
Oct 15 08:07:51 home kernel: [ 9.329122] USB Serial support registered for
GSM modem (1-port)
Oct 15 08:07:51 home kernel: [ 9.329523] option 1-4:1.0: GSM modem (1-port)
converter detected
Oct 15 08:07:51 home kernel: [ 9.329722] usb 1-4: GSM modem (1-port)
converter now attached to ttyUSB0
Oct 15 08:07:51 home kernel: [ 9.329743] option 1-4:1.3: GSM modem (1-port)
converter detected
Oct 15 08:07:51 home kernel: [ 9.329877] usb 1-4: GSM modem (1-port)
converter now attached to ttyUSB1
Oct 15 08:07:51 home kernel: [ 9.329887] option 1-4:1.4: GSM modem (1-port)
converter detected
Oct 15 08:07:51 home kernel: [ 9.330024] usb 1-4: GSM modem (1-port)
converter now attached to ttyUSB2
Oct 15 08:07:51 home kernel: [ 9.330448] option: v0.7.2:USB Driver for GSM
modems
Oct 15 08:07:51 home modem-manager[863]: <info> Loaded plugin Linktop
Oct 15 08:07:51 home modem-manager[863]: <info> Loaded plugin Samsung
Oct 15 08:07:51 home modem-manager[863]: <info> Loaded plugin Ericsson MBM
Oct 15 08:07:51 home modem-manager[863]: <info> Loaded plugin Sierra
Oct 15 08:07:51 home modem-manager[863]: <info> Loaded plugin MotoC
Oct 15 08:07:51 home modem-manager[863]: <info> Loaded plugin Option
Oct 15 08:07:51 home modem-manager[863]: <info> Loaded plugin Gobi
Oct 15 08:07:51 home modem-manager[863]: <info> Loaded plugin Huawei
Oct 15 08:07:51 home modem-manager[863]: <info> Loaded plugin Longcheer
Oct 15 08:07:51 home modem-manager[863]: <info> (ttyUSB0) opening serial
port...
Oct 15 08:07:51 home NetworkManager[926]: <info> modem-manager is now available
Oct 15 08:07:54 home modem-manager[863]: <info> (ttyUSB0) closing serial
port...
Oct 15 08:07:54 home modem-manager[863]: <info> (ttyUSB0) serial port closed
Oct 15 08:07:54 home modem-manager[863]: <info> (ttyUSB0) opening serial
port...
Oct 15 08:07:54 home modem-manager[863]: <info> (Huawei): GSM modem
/sys/devices/pci0000:00/0000:00:1d.7/usb1/1-4 claimed port ttyUSB0
Oct 15 08:07:55 home modem-manager[863]: <info> (ttyUSB0) closing serial
port...
Oct 15 08:07:55 home modem-manager[863]: <info> (ttyUSB0) serial port closed
Oct 15 08:07:57 home modem-manager[863]: <info> (ttyUSB1) opening serial
port...
Oct 15 08:07:57 home modem-manager[863]: <info> (ttyUSB2) opening serial
port...
Oct 15 08:07:58 home modem-manager[863]: <info> (ttyUSB2) closing serial
port...
Oct 15 08:07:58 home modem-manager[863]: <info> (ttyUSB2) serial port closed
Oct 15 08:07:58 home modem-manager[863]: <info> (Huawei): GSM modem
/sys/devices/pci0000:00/0000:00:1d.7/usb1/1-4 claimed port ttyUSB2
Oct 15 08:08:09 home modem-manager[863]: <info> (ttyUSB1) closing serial
port...
Oct 15 08:08:09 home modem-manager[863]: <info> (ttyUSB1) serial port closed
Oct 15 08:08:09 home modem-manager[863]: <info> (ttyUSB1) opening serial
port...
Oct 15 08:08:12 home modem-manager[863]: <info> (ttyUSB1) closing serial
port...
Oct 15 08:08:12 home modem-manager[863]: <info> (ttyUSB1) serial port closed
Oct 15 08:08:12 home modem-manager[863]: <info> (Huawei): GSM modem
/sys/devices/pci0000:00/0000:00:1d.7/usb1/1-4 claimed port ttyUSB1
Oct 15 08:09:30 home modem-manager[863]: <info> (ttyUSB0) opening serial
port...
Oct 15 08:09:30 home modem-manager[863]: <info> Modem
/org/freedesktop/ModemManager/Modems/0: state changed (disabled -> enabling)
Oct 15 08:09:30 home modem-manager[863]: <info> (ttyUSB2) opening serial
port...
Oct 15 08:09:30 home modem-manager[863]: Invalid error code: 303
Oct 15 08:09:30 home modem-manager[863]: <info> Modem
/org/freedesktop/ModemManager/Modems/0: state changed (enabling -> enabled)
Oct 15 08:09:30 home modem-manager[863]: <info> Modem
/org/freedesktop/ModemManager/Modems/0: state changed (enabled -> registered)
Oct 15 08:09:31 home modem-manager[863]: <info> Modem
/org/freedesktop/ModemManager/Modems/0: state changed (registered -> connecting)
Oct 15 08:09:31 home modem-manager[863]: <info> Modem
/org/freedesktop/ModemManager/Modems/0: state changed (connecting -> registered)
Oct 15 08:09:31 home modem-manager[863]: <info> Modem
/org/freedesktop/ModemManager/Modems/0: state changed (registered -> searching)
Oct 15 08:09:31 home modem-manager[863]: <info> Modem
/org/freedesktop/ModemManager/Modems/0: state changed (searching -> registered)
------------------------
Some more info (received while modemmanager in debug mode) in short (full log
attached):
Modemmanager sends five AT^CURC=0 commands to ttyUSB0, receives no reply.
Then sends five AT^GETPORTMODE commands to ttyUSB0, receives no reply.
Then sends three AT+GCAP commands to ttyUSB0, receives no reply.
Closes port ttyUSB0. Reopens port ttyUSB0.
Sends two 00 78 f0 7e signals to ttyUSB0, receives no reply.
Closes port ttyUSB0.
At the same time, ttyUSB1 and ttyUSB2 continuosly get "re-checking support..."
and "deferring support check" without success (and keep getting that after
ttyUSB0 gets closed).
Dumb guess:
Maybe a different AT command should be sent to "reset" the modem if it "thinks
there is a session open"?
** Affects: modemmanager (Ubuntu)
Importance: Undecided
Status: New
** Tags: detected e173 huawei not
--
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https://bugs.launchpad.net/bugs/875455
Title:
Cannot find Huawei modem (open port) after restart if connection
wasn't manually dropped - regression since Natty
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