Extra spaces in the "AT+CGDCONT" command causes connection to fail

[Willem Brown]

Binary package hint: modemmanager

Hello,

I am trying to use a Sierra Wireless AC775 modem, but the connection fails with an "DEBUG: Got failure code 100: Unknown error" error.

The problem seems to be that the modem manager is inserting spaces between the parameters for the "AT+CGDCONT" command.

** (modem-manager:4295): DEBUG: (ttyS1): --> 'AT+CGDCONT?<CR>'
** (modem-manager:4295): DEBUG: (ttyS1): <-- '<CR><LF>+CGDCONT: 1,"IP","vdata","",0,0<CR><LF><CR><LF>OK<CR><LF>'
** (modem-manager:4295): DEBUG: (ttyS1): --> 'AT+CGDCONT=1, "IP", "vdata"<CR>'
** (modem-manager:4295): DEBUG: (ttyS1): <-- '<CR><LF>ERROR<CR><LF>'

If I use "kermit" to manually execute the "AT+CGDCONT" command without the space then it is successful.

AT+CGDCONT=1, "IP", "vdata"
ERROR

AT+CGDCONT=1,"IP","vdata"
OK

Best regards
Willem Brown

ProblemType: Bug
Architecture: amd64
Date: Tue Nov 10 23:27:33 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
Package: modemmanager 0.2.git.20091014t233208.16f3e00-0ubuntu1
ProcEnviron:
 PATH=(custom, user)
 LANG=en_ZA.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: modemmanager
Uname: Linux 2.6.31-14-generic x86_64
XsessionErrors:
 (gnome-settings-daemon:3621): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (gnome-settings-daemon:3621): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (nautilus:3729): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (polkit-gnome-authentication-agent-1:3759): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (gnome-panel:3726): Gdk-WARNING **: /build/buildd/gtk+2.0-2.18.3/gdk/x11/gdkdrawable-x11.c:952 drawable is not a pixmap or window

[Mathieu Trudel-Lapierre (cyphermox)]

Well, right now in mm-generic-gsm.c:3567:

        command = g_strdup_printf ("+CGDCONT=%d,\"IP\",\"%s\"", cid, apn);
        mm_at_serial_port_queue_command (port, command, 3, set_apn_done, info);

There are no spaces in the command. I'll assume this was since fixed upstream, and is currently fixed at least in Oneiric, but also probably in Natty and other releases. Marking this bug Fix Released.