Bug 1031151 - NetworkManager Mobile Broadband connection handling is flaky
NetworkManager Mobile Broadband connection handling is flaky
Product: Fedora
Classification: Fedora
Component: NetworkManager (Show other bugs)
x86_64 Linux
unspecified Severity unspecified
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Assigned To: Dan Williams
Fedora Extras Quality Assurance
Depends On:
  Show dependency treegraph
Reported: 2013-11-15 13:01 EST by Samium Gromoff
Modified: 2015-06-29 08:56 EDT (History)
4 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2015-06-29 08:56:35 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Output from "journalctl --since today" after the experiment. (420.52 KB, text/plain)
2013-12-06 05:32 EST, Göran Uddeborg
no flags Details
Output from "mmcli -m 0" (1.72 KB, text/plain)
2013-12-06 05:35 EST, Göran Uddeborg
no flags Details

  None (edit)
Description Samium Gromoff 2013-11-15 13:01:31 EST
Description of problem:

Initiation of a "Mobile Broadband" connection is flaky -- the user has to click
"Mobile Broadband" -> "Connect" more than once, for the connection to succeed,
even if the signal is strong enough.

Version-Release number of selected component (if applicable):
Name        : NetworkManager
Version     :
Release     : 15.git20131003.fc20
Name        : ModemManager
Version     : 1.1.0
Release     : 2.git20130913.fc20

How reproducible:
Connection initiation fails _very_ frivolously, but is stable, once established.  

Steps to Reproduce:

1. Buy an Ericsson H5321 gw 3G modem -- not sure about how others fare
2. Try to initiate a 3G connection -- imperfect conditions might amplify the issue, I guess

Actual results:

"Mobile Broadband" takes several "Connect" clicks to succeed.

Expected results:

"Mobile Broadband" should take a single "Connect" click to succeed.

Additional info:

from `lsusb`:
Bus 003 Device 035: ID 0bdb:1926 Ericsson Business Mobile Networks BV 
Device Descriptor:
  bcdUSB               2.00
  idVendor           0x0bdb Ericsson Business Mobile Networks BV
  idProduct          0x1926 
  iManufacturer           1 Lenovo
  iProduct                2 H5321 gw
Comment 1 Göran Uddeborg 2013-12-06 05:32:48 EST
Created attachment 833556 [details]
Output from "journalctl --since today" after the experiment.
Comment 2 Göran Uddeborg 2013-12-06 05:34:08 EST
I'm having similar experiences with the same hardware.  I'm trying to give you some more information to debug the issue.  I provide the output of "mmcli".  I also provide the output of "journalctl --since today" after having done the following steps:

1 Boot
2 Connect from panel.  It says the broadband is "inactive" before I click.  This fails.
3 Connect from the panel again.  This time it says the broadband is "off" before I connect.  This time it succeeds.
4 Disconnect from panel.
5 Connect again from panel.  This fails immediately.
6 Repeat 5, same result.
7 Open "network settings" dialog, and turn off the broadband in there.
8 Turn on in n-s.  Now it believes it is connected; the panel indicates that for example.  But I can't get anywhere over the net.
9 Turn off in n-s.
10 Turn on in n-s.  Fails
11 Connect from panel.  Fails
12 Turn off and on in n-s.
13 Connect from panel, fails.
14 Turn off the computer.
15 Turn on the computer.
16 Connect from panel.  Fails as in 2.
17 Connect from panel.  Succeeds as in 3.

End of experiment.  Previous days when I have tried to get this to work I've seen in the output of journalctl that NetworkManager has tried to use dhclient to get an IP address.  That too always fails.  In today's experiment, that didn't occur.
Comment 3 Göran Uddeborg 2013-12-06 05:35:28 EST
Created attachment 833557 [details]
Output from "mmcli -m 0"

Installed packages:
Comment 4 Fedora End Of Life 2015-05-29 05:46:29 EDT
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Comment 5 Fedora End Of Life 2015-06-29 08:56:35 EDT
Fedora 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 is
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