** Branch linked: lp:~modemmanager/modemmanager/ubuntu-0.7
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Title:
Sierra/ZTE LTE modem gives no signal quality in LTE mode (only in
3G/2G
** Branch linked: lp:~modemmanager/modemmanager/ubuntu
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Title:
Sierra/ZTE LTE modem gives no signal quality in LTE mode (only in
3G/2G mode)
** No longer affects: network-manager-applet (Ubuntu)
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Title:
Sierra/ZTE LTE modem gives no signal quality in LTE mode (only in
3G/2G mode)
Works now, thanks!
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Title:
Sierra/ZTE LTE modem gives no signal quality in LTE mode (only in
3G/2G mode)
To manage notifications about this
Fixed upstream. See
https://bugzilla.gnome.org/show_bug.cgi?id=636040#c15
** Also affects: network-manager-applet
Importance: Undecided
Status: New
** Bug watch added: GNOME Bug Tracker #636040
https://bugzilla.gnome.org/show_bug.cgi?id=636040
** Changed in: network-manager-applet
** Changed in: modemmanager (Ubuntu)
Status: Triaged = In Progress
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Title:
Sierra/ZTE LTE modem gives no signal quality in LTE mode (only
Got it; it's in my bzr branch locally, going to upload shortly.
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Title:
Sierra/ZTE LTE modem gives no signal quality in LTE mode (only in
This bug was fixed in the package modemmanager - 0.6.0.0-0ubuntu4
---
modemmanager (0.6.0.0-0ubuntu4) quantal; urgency=low
* debian/patches/git_fall_back_to_csq_cind_8bd6903.patch: fallback to +CSQ if
+CIND reports a signal level of 0. (LP: #1060831)
*
** Branch linked: lp:ubuntu/modemmanager
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Title:
Sierra/ZTE LTE modem gives no signal quality in LTE mode (only in
3G/2G mode)
To manage
** Summary changed:
- Sierra LTE modem gives no signal quality in LTE mode (only in 3G/2G mode)
+ Sierra/ZTE LTE modem gives no signal quality in LTE mode (only in 3G/2G mode)
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** Changed in: modemmanager (Ubuntu)
Status: New = Triaged
** Changed in: modemmanager (Ubuntu)
Importance: Undecided = High
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Title:
Same problem for a ZTE modem in LTE mode:
modem-manager[29629]: debug [1349262318.552754] [mm-at-serial-port.c:334]
debug_log(): (ttyUSB3): -- 'AT+ZPAS?CR'
modem-manager[29629]: debug [1349262318.568652] [mm-at-serial-port.c:334]
debug_log(): (ttyUSB3): -- 'CRLF+ZPAS:
4G,PS_ONLYCRLFCRLFOKCRLF'
Weird... is this happening for every LTE modem out there?
We could have a new property in MMBroadbandModem specifying that +CSQ is
always preferred over +CIND for signal quality updates (talking about
git master here), so that plugins can set it when that happens.
Or, if the issue is really more
Well, those two modems have in common that they are both using Qualcomm
chipsets (supporting QMI protocol), so it might just be a bug there.
I think there is such property in place, at least in the MM_06 branch.
The question is just when we want to change the default. I am not sure
if the
On 10/03/2012 02:19 PM, Marius Kotsbak wrote:
Well, those two modems have in common that they are both using Qualcomm
chipsets (supporting QMI protocol), so it might just be a bug there.
I think there is such property in place, at least in the MM_06 branch.
The question is just when we want
Yes:
marius@marius-T1005:~$ qmicli -d /dev/cdc-wdm0 --nas-get-signal-strength
[/dev/cdc-wdm0] Successfully got signal strength
Current:
Network 'umts': '-104 dBm'
RSSI:
Network 'umts': '-104 dBm'
ECIO:
Network 'umts': '-13,5 dBm'
I assume it is nothing like CIND giving 0-5 signal
Another question is if the value in +CSQ has the same unit/range in 3G
vs LTE mode.
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Title:
Sierra/ZTE LTE modem gives no signal quality in LTE
+CSQ is usually defined as a value between 1 and 31; plus 99 for
unknown. ModemManager scales this value to the expected [0,100] range.
The signal strength reported with QMI is based on RSSI, which we then
convert to the same [0,100] range.
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That means we can solve this by only changing the method to CIND when
CSQ returns 99, and else use CSQ?
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Title:
Sierra/ZTE LTE modem gives no
Not really, no. What I'm not sure is why CIND is preferred over CSQ by
default.
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Title:
Sierra/ZTE LTE modem gives no signal quality in LTE mode
See bug #682282 and the corresponding upstream bug report. That is why
the default was changed.
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Title:
Sierra/ZTE LTE modem gives no signal
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