Mobile Data doesn't reconnect

[Crs]

Reproduce (always):
1. Reboot phone
2. Confirm cellular data working
3. Toggle Wi-Fi (on->connect->off)

What happens:
Cellular data is not restored

What should happen:
Cellular data should be restored

Solution: Reboot phone

Informations about my phone:
system-image-cli -i
current build number: 229
device name: mako
channel: ubuntu-touch/devel-proposed/ubuntu
last update: 2015-06-18 10:00:54
version version: 229
version ubuntu: 20150618
version device: 20150529.1
version custom: 20150618

Mobile carrier: Aldi Talk (E-Plus)

apt-cache policy ofono
http://pastebin.ubuntu.com/11734960/

nmcli d
http://pastebin.ubuntu.com/11734858/

/usr/share/ofono/scripts/list-contexts
http://pastebin.ubuntu.com/11734830/

/usr/share/ofono/scripts/list-modems
http://pastebin.ubuntu.com/11734827/

cat /var/log/syslog | grep Network (right after network-manager restart)
http://pastebin.ubuntu.com/11734836/

Note:
The password has to be "gprs" according to my carrier.
Changed it by doing:
/usr/share/ofono/scripts/set-context-property 1 Password gprs
Checked list-contexts again and
Restarted networkmanager
-> same problem

[Tony Espy (awe)]

@Crs

First, as you're running the development release, I assume you've implemented the workaround to the USB renaming issue which effects Nexus devices already ( see bug #1467640 for the details ).

The version of network-manager in 15.10 is missing several updates which have been made to improve networking on the phone. I'll will be working on landing these improvements over the next week or so. If you've made your device writable, you're welcome to install the latest version of network-manager from our overlay PPA, this should fix the re-connect issues you're seeing.

That said, be fore-warned that if you've made your device writable, and are modifying the system via apt-get, or other direct installs, you risk breaking system updates if/when we start releasing them for the development release.

[Tony Espy (awe)]

All of the major changes to network-manager which landed in the stable images should now have also landed in wily. As such, I'm changing the status of this bug to Incomplete. Please re-test with a current image, although be fore-warned that the development images are a bit shaky at the moment due to the ongoing GCC5 transition.

[mikahdh (f4tmike)]

Data gets lost and doesn't reconnect since OTA-6 (Mako).
Not sure if toggling data on/off always fixes it or just today when I got aware of it.

Any information, any logs I can provide?

[Launchpad Janitor (janitor)]

[Expired for ofono (Ubuntu) because there has been no activity for 60 days.]