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Bug 1147700

Summary: Bluetooth connections disconnect shortly after their establishment (Thinkpad T440s)
Product: Red Hat Enterprise Linux 7 Reporter: David Jaša <djasa>
Component: NetworkManagerAssignee: Lubomir Rintel <lrintel>
Status: CLOSED ERRATA QA Contact: Desktop QE <desktop-qa-list>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 7.0CC: danw, dcbw, jklimes, lrintel, rkhan, thaller, vbenes
Target Milestone: rc   
Target Release: 7.1   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: NetworkManager-0.9.9.1-46.git20140326.4dba720.el7 Doc Type: Bug Fix
Doc Text:
NetworkManager did not properly observe changes in status of Bluetooth connections, causing them to be terminated shortly after establishment due to erroneously assumed time-out. The updated packages correct this issue.
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-03-05 13:53:19 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
NM debug log
none
nmcli connections and details
none
journal log throughout bluetooth connections none

Description David Jaša 2014-09-29 22:00:03 UTC
Description of problem:
Bluetooth connections disconnect shortly after their establishment (Thinkpad T440s)

Version-Release number of selected component (if applicable):
RHEL 7.0 & 7.1:
NetworkManager-0.9.9.1-37.git20140326.4dba720.el7.x86_64
bluez-4.101-13.el7.x86_64
kernel-3.10.0-167.el7.x86_64

How reproducible:
always

Steps to Reproduce:
1. pair the computer with a network-sharing-capable bluetooth device
2. set up a network connection in NM
3. bring the connection up

Actual results:
The connection fails few seconds after the connection gets established. The first error in /var/log/messages is:
Sep 29 23:45:17 cihla NetworkManager[32166]: <info> (64:77:91:D5:84:2B): device state change: config -> failed (reason 'bluetooth-failed') [50 120 44]


Expected results:
connection keeps working

Additional info:

Comment 1 Rashid Khan 2014-09-30 13:48:36 UTC
Hi David
Can we please get one of these laptops on loan to debug the issue?
Without it, it is difficult to reproduce and fix. 
Will need it for 1-4 weeks max. 

please let me know
Rashid

Comment 3 David Jaša 2014-10-02 12:41:39 UTC
Created attachment 943363 [details]
NM debug log

Comment 5 David Jaša 2014-10-08 14:02:18 UTC
Created attachment 945021 [details]
nmcli connections and details

Comment 6 David Jaša 2014-10-08 14:10:43 UTC
Created attachment 945035 [details]
journal log throughout bluetooth connections

The fix works (connection is established and holds) but there are some things that do not play well:

* the connection went down after few minutes without apparent reason. After reconnecting however, the connection holds

* there are actually two connections related to the bluetooth connection:
1) actual bluetooth "GT-I8190" connection. It's MAC address is given as the connection's Device
2) USB Ethernet "Wired Connection 1" on top of "bnep0" device which actually holds IP configuration

The result is that gnome-shell shows my "GT-I8190 Network" connection as "Activating..." forever and it shows the mysterious "Wired Connection 1" as active - but the network icon is showing activating wireless connection.

The gnome-shell (and gnome-control-center) behaviour may be also buggy (in a sense it is when bridges are in use) but I frankly don't understand why two connections do some interplay on top of a single device.

Comment 7 Lubomir Rintel 2014-10-08 14:15:41 UTC
Yep, seen that in your original log. I thought the "Wired Connection 1" would not activate if we took hold of the bnep0 device correctly.

Will look into it.

Comment 8 David Jaša 2014-10-10 14:25:32 UTC
>  Lubomir Rintel 2014-10-10 12:03:34 CEST
> Status: MODIFIED → ON_QA
> Fixed In Version: NetworkManager-0.9.9.1-46.git20140326.4dba720.el7

Works like charm in this build.

Comment 11 errata-xmlrpc 2015-03-05 13:53:19 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-0311.html