** No longer affects: network-manager-applet (Ubuntu)
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https://bugs.launchpad.net/bugs/1060831
Title:
Sierra/ZTE LTE modem gives no signal quality in LTE mode (only in
3G/2G mode)
Status in ModemManager (with NetworkManager support):
Fix Committed
Status in “modemmanager” package in Ubuntu:
Fix Released
Bug description:
In LTE mode, the sierra modem (MC7710) gives no indication of signal
quality in nm-applet. It looks like icon "gsm-3g-none.svg". I suspect
this is caused by this in the modemmanager debug log when connected:
modem-manager[25672]: <debug> [1349256755.558392] [mm-at-serial-port.c:334]
debug_log(): (ttyUSB3): --> 'AT*CNTI=0<CR>'
modem-manager[25672]: <debug> [1349256755.579056] [mm-at-serial-port.c:334]
debug_log(): (ttyUSB3): <-- '<CR><LF>*CNTI: 0,LTE<CR><LF><CR><LF>OK<CR><LF>'
modem-manager[25672]: <debug> [1349256758.802283] [mm-at-serial-port.c:334]
debug_log(): (ttyUSB3): --> 'AT+CIND?<CR>'
modem-manager[25672]: <debug> [1349256758.821538] [mm-at-serial-port.c:334]
debug_log(): (ttyUSB3): <-- '<CR><LF>+CIND:
5,0,1,1,0,0,1,0<CR><LF><CR><LF>OK<CR><LF>'
Seems like the signal quality is the second number:
Oct 1 19:23:39 marius-T1005 ModemManager[22170]: <debug> [1349112219.280233]
[mm-at-serial-port.c:392] debug_log():
(ttyUSB3): <-- '<CR><LF>+CIND:
("battchg",(0-5)),("signal",(0-5)),("service",(0-1)),("call",(0-1)),("roam",(0-1)),("s
msfull",(0-1)),("GPRS
coverage",(0-1)),("callsetup",(0-3))<CR><LF><CR><LF>OK<CR><LF>'
Oct 1 19:23:39 marius-T1005 ModemManager[22170]: <debug> [1349112219.280871]
[mm-broadband-modem.c:1704] cind_format
_check_ready(): Modem supports signal quality indications via CIND at index
'2'(min: 0, max: 5)
which is reported as zero. The signal is good (I measure download rate
of 37 mbits/s), and in 3G/2G mode I get the correct signal quality
indication.
Could it be that MM should not use +CIND but instead +CSQ?
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: network-manager-gnome 0.9.6.2-0ubuntu5
Uname: Linux 3.6.0-030600rc6-generic i686
ApportVersion: 2.6.1-0ubuntu1
Architecture: i386
Date: Wed Oct 3 11:19:55 2012
EcryptfsInUse: Yes
IpRoute:
default via 89.9.192.92 dev wwan0 proto static
89.9.192.0/24 dev wwan0 proto kernel scope link src 89.9.192.92 metric 7
169.254.0.0/16 dev wwan0 scope link metric 1000
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=false
WWANEnabled=true
WimaxEnabled=true
ProcEnviron:
LANGUAGE=nb_NO:nb:no_NO:no:nn_NO:nn:en
TERM=xterm
PATH=(custom, no user)
LANG=nb_NO.UTF-8
SHELL=/bin/bash
RfKill:
0: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: no
SourcePackage: network-manager-applet
UpgradeStatus: Upgraded to quantal on 2012-08-31 (32 days ago)
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
wwan0 gsm connected
/org/freedesktop/NetworkManager/Devices/2
eth0 802-3-ethernet unavailable
/org/freedesktop/NetworkManager/Devices/1
wlan0 802-11-wireless unavailable
/org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE
WIFI WWAN-HARDWARE WWAN
running 0.9.7.0 connected enabled enabled
disabled enabled enabled
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