I've seen some reports of these; but without logs this is the kind of
thing that is impossible to debug.
Could someone seeing this enable debug logs in NetworkManager (editing
/etc/init/network-manager.conf and adding --log-level=debug --log-
domains=core,mb to the Exec line) as well as enabling ofono debug logs
(same idea, add -d to the Exec line), and try to follow the states
reported from /usr/share/ofono/scripts/list-modems as the time passes,
since this seems to be roughly limited to about a 10 minutes window?
Logs would end up in /var/log/syslog; the full syslog is useful to debug
this behavior.
** Changed in: network-manager (Ubuntu)
Status: Confirmed => Incomplete
** Changed in: network-manager (Ubuntu)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/1418077
Title:
NM fails to create a cellular data connection for a unacceptably long
time
Status in network-manager package in Ubuntu:
Incomplete
Bug description:
Steps to reproduce:
1. Confirm cellular data (disable wifi)
2. Change TechnologyPreference on online SIM
3. Confirm no cellular data
4. Wait ~10 minutes
5. Confirm cellular data
What happens:
Changing something on the modem causes cellular data to disappear for 10
minutes
What should happen:
It should behave as before, i.e. cellular data should come back immediately
current build number: 97
device name: krillin
channel: ubuntu-touch/devel-proposed
alias: ubuntu-touch/vivid-proposed
last update: 2015-02-02 12:48:25
version version: 97
version ubuntu: 20150202
version device: 20150128-5379bdb
version custom: 20150202
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