[Bug 1828102] Re: Regression in ModemManager

Till Kamppeter 1828102 at bugs.launchpad.net
Fri Jul 26 17:00:11 UTC 2019


@ddstreet, unfortunately, I cannot verify this as the bug only occured
for CDMA phones and the CDMA system is only available in the US where
the rest of the world only uses GSM and UMTS systems for cell phones. So
we need someone in the US to verify this fix.

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Title:
  Regression in ModemManager

Status in modemmanager package in Ubuntu:
  Fix Released
Status in modemmanager source package in Bionic:
  Fix Released
Status in modemmanager source package in Cosmic:
  Won't Fix
Status in modemmanager source package in Disco:
  Fix Committed
Status in modemmanager source package in Eoan:
  Fix Released

Bug description:
  [Impact]

  ModemManager disconnects from CDMA modem after 30 sec failing to check
  signal status due to incorrect error handling

  [Test case]

  connect to a cdma device without an extra AT channel (Eg. Samsung
  brightside phone) and modemmanager will terminate the connection

  [Regression potential]

  The patch is tiny, fixing an obvious overlook, and it only affects
  CDMA broadband modems, so the risk of a regression is very low.

  [Original description]

  ModemManager disconnects after ~30 sec

  caused by a typo in 1.8

  see https://bugs.launchpad.net/ubuntu/+source/modemmanager/+bug/1819615
  and
  https://gitlab.freedesktop.org/mobile-broadband/ModemManager/issues/119
  for details

  needs a SRU for cosmic and dingo

  patch attached

  yechiel

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