ubuntu-phonedations-bugs team mailing list archive

[Alfonso Sanchez-Beato <alfonso.sanchez-beato@xxxxxxxxxxxxx>]

@Pat, thanks for the logs. I see something similar as in jibel's:
registration is suddenly dropped and then re-established after a few
seconds. Sequence is (1: registered, 0: non-registered, 2: searching):

08-25 21:31:13.108  2160  2169 D AT      : AT< +CREG: 1,"1B48","07EF7DA3",6,0,0
08-25 21:34:34.482  2160  2169 D AT      : AT< +CREG: 0,"FFFF","0FFFFFFF",0,0,0
08-25 21:34:34.489  2160  2169 D AT      : AT< +CREG: 2,"FFFF","0FFFFFFF",0,0,0
08-25 21:34:53.145  2160  2169 D AT      : AT< +CREG: 1,"1779","00007DA3",3,0,0
08-25 21:35:06.616  2160  2169 D AT      : AT< +CREG: 1,"1B48","07EF7DA3",6,0,0

I checked that there are no suspicious AT commands triggered from our
side, so this looks like a modem firmware bug. There is a small chance
that we need to set some configuration to avoid this though.

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https://bugs.launchpad.net/bugs/1607823

Title:
  Cellular connection drops out

Status in Canonical System Image:
  Incomplete
Status in ofono package in Ubuntu:
  Confirmed

Bug description:
  MX4 running 379 from 7/15

  I recently noticed the phone was Searching for a signal for some time, even though I know it was connected just prior.
  Wifi is disabled.

  The attached syslog shows the modem disconnecting and reconnecting
  several times throughout the morning.

  Interesting ofono commit on the 12th related to managing power states
  http://people.canonical.com/~lzemczak/landing-team/ubuntu-touch/rc-proposed/meizu.en/arale/375.commitlog

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