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[Bug 811101] New: NetworkManager fails to reconnect after 3G connection dropped, requires ModemManager restart
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Fri, 22 Mar 2013 19:37:00 +0000
  • Message-id: <bug-811101-21960@http.bugzilla.novell.com/>

https://bugzilla.novell.com/show_bug.cgi?id=811101

https://bugzilla.novell.com/show_bug.cgi?id=811101#c0


Summary: NetworkManager fails to reconnect after 3G connection
dropped, requires ModemManager restart
Classification: openSUSE
Product: openSUSE 12.3
Version: Final
Platform: x86-64
OS/Version: Other
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Network
AssignedTo: bnc-team-screening@xxxxxxxxxxxxxxxxxxxxxx
ReportedBy: gp@xxxxxxxx
QAContact: qa-bugs@xxxxxxx
Found By: Product Management
Blocker: ---


Created an attachment (id=531269)
--> (http://bugzilla.novell.com/attachment.cgi?id=531269)
An annotated excerpt of /var/log/messages from one typical run

This is with a notebook and a 3G USB stick:

Bus 002 Device 007: ID 19d2:0063 ZTE WCDMA Technologies MSM K3565-Z HSDPA

When riding on a train, and the connection breaks due to loss of signal,
once I have a signal again (as indicated by the color of the LED on the
USB stick), NetworkManager/nm-applet is not able to reinitiate a connection.

Once I kill modem-manager, which then automatically restarts, this works
again. This is close to 100% reproducible.

(A former umtsmon developer indicated to me that this might be due to
modem-manager not sufficiently reinitializing the USB connection/stick
for the reconnect. Obviously, restarting modem-manager addresses this,
but is crude, requires root, and leads to a delay.)

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