No Cellular data option after update ota-12

[fgores]

Since ota-12 I have no cellular data anymore. The phone (Meizu mx-4) shows an empty wifi indicator and in system settings/mobile the cellular data and Data roaming toggle switches ar disabled. For the connection type I can still select 2/3/4G but no difference. In APN settings I have both <provider> internet and MMS ticked.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Bordi István (istvan-bordi)]

I have the same problem after updating to OTA-12, except for me the cellular data is always ON, despite the switches on both the indicator panel and the settings page are disabled.
(I had to ifconfig down the interface to prevent the phone from using all my data provided by my telco subscription for the current month.)

[Steven Claeys (steven-claeys)]

Same problem over here: since ota-12 the 'cellular data' switch is turned off and there's no way to turn it on.

[Jonas G. Drange (jonas-drange)]

Thanks for reporting this bug. Is there anything in the System Settings log, or maybe the indicator-network log (System Settings talks to indicator-network here).

Pertinent logs:
.cache/upstart/indicator-network.log
.cache/upstart/application-legacy-ubuntu-system-settings-.log

[Bordi István (istvan-bordi)]

I checked the current logs:
http://pastebin.com/dN5FErJP

As far as I understand there's nothing related to the problem there, so I restarted the phone, and checked again:
http://pastebin.com/yDW7U6ai

Not much changed in the indicator log, but these lines from the settings log might be related:

2016-08-19 17:05:40,337 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/Components/NoSim.qml:26: TypeError: Cannot read property of null
2016-08-19 17:05:40,338 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/Components/NoSim.qml:27: TypeError: Cannot read property of null
2016-08-19 17:05:40,338 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/Components/NoSim.qml:28: TypeError: Cannot read property of null
2016-08-19 17:05:40,590 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/Components/SingleSim.qml:95: TypeError: Cannot read property 'DataRoamingEnabled' of null

[Steven Claeys (steven-claeys)]

Found this in /application-legacy-ubuntu-system-settings-.log:

Loading module: 'libubuntu_application_api_touch_mirclient.so.3.0.0'
BrightnessItem::BrightnessItem(const QVariantMap&, QObject*) ubuntu.widi.supported: 0
qml: Page_QMLTYPE_48(0xb9bab0, "systemSettingsPage")"Systeeminstellingen": In Ubuntu.Components 1.3, the use of Page.title, Page.flickable and Page.head is deprecated. Use Page.header and the PageHeader component instead.
2016-08-25 17:42:04,516 - WARNING - setting up the si interface...
2016-08-25 17:42:04,934 - WARNING - file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/1.3/PageStack.qml:230:9: QML PageWrapper: Could not assign value: QVariant(QVariantMap, QMap()) to property: "pluginOptions"
2016-08-25 17:42:04,936 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/PageComponent.qml:31:1: QML PageComponent: Binding loop detected for property "flickable"
2016-08-25 17:42:05,256 - WARNING - Got invalid serialized mime data. Ignoring it.
2016-08-25 17:42:05,259 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/Components/NoSim.qml:26: TypeError: Cannot read property of null
2016-08-25 17:42:05,259 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/Components/NoSim.qml:27: TypeError: Cannot read property of null
2016-08-25 17:42:05,260 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/Components/NoSim.qml:28: TypeError: Cannot read property of null
2016-08-25 17:42:05,475 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/Components/SingleSim.qml:95: TypeError: Cannot read property 'DataRoamingEnabled' of null
2016-08-25 17:42:14,079 - WARNING - Last frame took 49 ms to render.
2016-08-25 17:42:18,073 - WARNING - Last frame took 36 ms to render.
2016-08-25 17:42:21,019 - WARNING - QObject::startTimer: Timers cannot be started from another thread

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Bordi István (istvan-bordi)]

Just updated to OTA-13 and the problem is now gone: both the cellular data switch and the roaming switch is enabled and working again.