Public bug reported:
This is the relevant excerpt from my syslog:
Oct 2 22:10:31 ubuntu-phablet kernel: [ 862.705020] adjust_soc: ibat_ua =
-220300, vbat_uv = 4375587, soc = 96, batt_temp=306
Oct 2 22:10:43 ubuntu-phablet NetworkManager[1087]: <info> (/ril_0): device
state change: activated -> disconnected (reason 'user-requested') [100 30 39]
Oct 2 22:10:43 ubuntu-phablet NetworkManager[1087]: <info> (/ril_0):
deactivating device (reason 'user-requested') [39]
Oct 2 22:10:43 ubuntu-phablet NetworkManager[1087]: <warn> DNS: plugin dnsmasq
update failed
Oct 2 22:10:43 ubuntu-phablet dnsmasq[2077]: setting upstream servers from DBus
Oct 2 22:10:43 ubuntu-phablet NetworkManager[1087]: <info> Removing DNS
information from /sbin/resolvconf
Oct 2 22:10:43 ubuntu-phablet NetworkManager[1087]: <info> WWAN now disabled
by management service
Oct 2 22:10:43 ubuntu-phablet dbus[653]: [system] Activating service
name='org.freedesktop.nm_dispatcher' (using servicehelper)
Oct 2 22:10:43 ubuntu-phablet whoopsie[1495]: offline
Oct 2 22:10:43 ubuntu-phablet NetworkManager[1087]: <info> (/ril_0) marked
enabled: 0
Oct 2 22:10:43 ubuntu-phablet dbus[653]: [system] Successfully activated
service 'org.freedesktop.nm_dispatcher'
Oct 2 22:10:51 ubuntu-phablet kernel: [ 882.695192] adjust_soc: ibat_ua =
-216800, vbat_uv = 4375587, soc = 96, batt_temp=307
Oct 2 22:11:03 ubuntu-phablet NetworkManager[1087]: <warn> (/ril_0) failed to
disconnect modem: Did not receive a reply. Possible causes include: the remote
application did not send a reply, the message bus security policy blocked the
reply, the reply timeout expired, or the network connection was broken.
Oct 2 22:11:11 ubuntu-phablet kernel: [ 902.685151] adjust_soc: ibat_ua =
-214500, vbat_uv = 4375293, soc = 96, batt_temp=308
Oct 2 22:11:31 ubuntu-phablet kernel: [ 922.675080] adjust_soc: ibat_ua =
-213400, vbat_uv = 4376176, soc = 96, batt_temp=308
Oct 2 22:11:45 ubuntu-phablet ofonod[915]: ril_deactivate_data_call_cb: replay
failure: GENERIC_FAILURE
Oct 2 22:11:51 ubuntu-phablet kernel: [ 942.665160] adjust_soc: ibat_ua =
-208900, vbat_uv = 4376176, soc = 96, batt_temp=308
Oct 2 22:12:11 ubuntu-phablet kernel: [ 962.655150] adjust_soc: ibat_ua =
-205400, vbat_uv = 4376766, soc = 96, batt_temp=308
Oct 2 22:12:31 ubuntu-phablet kernel: [ 982.645170] adjust_soc: ibat_ua =
-195800, vbat_uv = 4374701, soc = 96, batt_temp=308
This test was achieved by wrapping a Nexus 4 in tinfoil to block radio signals.
When tinfoil is added; the connection properly drops and is disconnected by
NetworkManager (note there is one message being sent that ofono never seems to
respond to). Ofono successfully transitions to Attached = 0; Status =
searching, etc. to indicate the GPRS connection was severed.
When tinfoil is removed, oFono eventually moves back to Status =
registered, but Attached never gets set back to 1. Because of this,
NetworkManager cannot activate a data session. The context still appears
to be active throughout, though.
[ /ril_0 ]
Features = sms net gprs sim
Emergency = 0
Powered = 1
Lockdown = 0
Interfaces = org.ofono.CallVolume org.ofono.MessageManager
org.ofono.NetworkRegistration org.ofono.VoiceCallManager
org.ofono.ConnectionManager org.ofono.NetworkTime org.ofono.SimManager
Online = 1
Model = Fake Modem Model
Revision = M9615A-CEFWMAZM-2.0.1700.84
Type = hardware
Serial = <omitted>
Manufacturer = Fake Manufacturer
[ org.ofono.CallVolume ]
Muted = 1
SpeakerVolume = 0
MicrophoneVolume = 0
[ org.ofono.MessageManager ]
[ org.ofono.NetworkRegistration ]
Status = registered
Strength = 22
Name = Bell
LocationAreaCode = <omitted>
Mode = auto
MobileCountryCode = 302
Technology = umts
CellId = <omitted>
MobileNetworkCode = 610
[ org.ofono.VoiceCallManager ]
EmergencyNumbers = 08 000 999 110 112 911 118 119
[ org.ofono.ConnectionManager ]
Attached = 0
RoamingAllowed = 0
Powered = 1
[ org.ofono.NetworkTime ]
[ org.ofono.SimManager ]
Retries =
MobileCountryCode = 302
FixedDialing = 0
SubscriberNumbers = <omitted>
PreferredLanguages = en fr
BarredDialing = 0
ServiceNumbers = [Client Care - Int'l] = '+15144207748' [Client Care -
Canada] = '*611' [#TAXI] = '#8294' [Directory Assistance] = '411' [Client Care
- US] = '18006677626'
CardIdentifier = <omitted>
LockedPins =
MobileNetworkCode = 610
SubscriberIdentity = <omitted>
Present = 1
PinRequired = none
[ /ril_0 ]
[ /ril_0/context1 ]
Username =
Protocol = ip
Name = Internet
Settings = { DomainNameServers=206.47.201.246,207.231.231.254,
Method=static Netmask=255.255.255.252 Address=10.110.xx.xx Interface=rmnet_usb0
Gateway=10.110.xx.xx }
IPv6.Settings = { }
Active = 1
AccessPointName = inet.bell.ca
Password =
Type = internet
** Affects: ofono (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1234434
Title:
after transitioning to Attached = 0; ofono never transitions back to
Attached = 1
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