*** This bug is a duplicate of bug 868034 ***
https://bugs.launchpad.net/bugs/868034
I just found a newer firmware version (11.313.02.00.01). After fimware
upgrade the problems (and workaround) still persist.
Some more details:
When ModemManager is allowed to probe /dev/ttyUSB1:
Feb 15 14:51:12 jbls-xps modem-manager[595]: <debug> [mm-plugin-base.c:850]
try_open(): (ttyUSB1): probe requested by plugin 'Huawei'
...
Feb 15 14:51:12 jbls-xps modem-manager[595]: <debug> [mm-modem-base.c:155]
mm_modem_base_add_port(): (ttyUSB1) type secondary claimed by
/sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1
Feb 15 14:51:12 jbls-xps modem-manager[595]: <info> [mm-manager.c:564]
do_grab_port(): (Huawei): GSM modem
/sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1 claimed port ttyUSB1
Then, when trying to connect ttyUSB0, both ttyUSB0 and ttyUSB1 get the commands
AT+CREG=2 and AT+CGREG=2. ttyUSB1 does not seem to like this and responds first
with "+CME ERROR: 3" and then "^BOOT:59866241,0,0,0,6":
Feb 15 14:51:15 jbls-xps modem-manager[595]: <debug> [mm-at-serial-port.c:298]
debug_log(): (ttyUSB1): --> 'AT+CREG=2<CR>'
Feb 15 14:51:15 jbls-xps modem-manager[595]: <debug> [mm-at-serial-port.c:298]
debug_log(): (ttyUSB1): <-- '<CR><LF>+CME ERROR: 3<CR><LF>'
Feb 15 14:51:15 jbls-xps modem-manager[595]: <debug> [mm-serial-parsers.c:412]
mm_serial_parser_v1_parse(): Got failure code 3: Operation not allowed
Feb 15 14:51:15 jbls-xps modem-manager[595]: <debug> [mm-at-serial-port.c:298]
debug_log(): (ttyUSB1): --> 'AT+CGREG=2<CR>'
Feb 15 14:51:15 jbls-xps modem-manager[595]: <debug> [mm-at-serial-port.c:298]
debug_log(): (ttyUSB1): <-- '<CR><LF>^BOOT:59866241,0,0,0,6<CR><LF>'
After that the modem does not respond at all. Even my otherwise working
pppd scripts fail to communicate with the modem.
When command 'cat /dev/ttyUSB1' is running ModemManager probing fails on
ttyUSB1:
Feb 15 14:54:29 jbls-xps modem-manager[595]: <debug> [mm-plugin-base.c:850]
try_open(): (ttyUSB1): probe requested by plugin 'Huawei'
...
Feb 15 14:54:46 jbls-xps modem-manager[595]: <debug> [mm-manager.c:624]
supports_callback(): (tty/ttyUSB1): ignoring port unsupported by physical
modem's plugin
After that ModemManager does not touch /dev/ttyUSB1 and NetworkManager
is able to connect using /dev/ttyUSB0.
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https://bugs.launchpad.net/bugs/932824
Title:
ModemManager hangs Huawei E220 Modem when probing ttyUSB1
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