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Old 10-21-2009, 12:10 PM   #1
nivantha
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Registered: Apr 2006
Distribution: Fedora
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Question Bluetooth Problem in Thinkpad T61 Running Feroda 11 on KDE 4.3.1


Hi,

I'm having problems in trying to use bluetooth on my laptop. I'm running fedora 11 on a Lenovo Thinkpad T61. The desktop environment is KDE 4.3.1.

When I launch the Kdebluetooth4 application through the menu, nothing happens at all. When I put a ps from bash, it gives me the following output.


2881 ? S 0:00 /usr/bin/kbluetooth4


Means it's starts running. When I run kbluetooth4-devicemanager, I get the following error message.



$kbluetooth4-devicemanager
QDBusObjectPath: invalid path ""
process 3001: arguments to dbus_message_new_method_call() were incorrect, assertion "path != NULL" failed in file dbus-message.c line 1070.
This is normally a bug in some application using the D-Bus library.
D-Bus not built with -rdynamic so unable to print a backtrace
KCrash: Application 'kbluetooth4-devicemanager' crashing...
sock_file=/home/Scorpian/.kde/socket-Avatar/kdeinit4__0


Same sort of error is given when I run the kbluetooth4-inputwizard

$kbluetooth4-inputwizard
QDBusObjectPath: invalid path ""
process 3031: arguments to dbus_message_new_method_call() were incorrect, assertion "path != NULL" failed in file dbus-message.c line 1070.
This is normally a bug in some application using the D-Bus library.
D-Bus not built with -rdynamic so unable to print a backtrace
KCrash: Application 'kbluetooth4-inputwizard' crashing...
sock_file=/home/Scorpian/.kde/socket-Avatar/kdeinit4__0


Bluetooth was working on the laptop before I installed fedora 11 on the laptop( It had Windows XP installed)

Could anybody help?

Thanks,

Nivantha
 
Old 10-25-2009, 03:49 AM   #2
CoderMan
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Registered: Jan 2009
Location: Gemini Capsule 25164
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Quote:
Originally Posted by nivantha View Post
Hi,

I'm having problems in trying to use bluetooth on my laptop. I'm running fedora 11 on a Lenovo Thinkpad T61. The desktop environment is KDE 4.3.1.

When I launch the Kdebluetooth4 application through the menu, nothing happens at all. When I put a ps from bash, it gives me the following output.


2881 ? S 0:00 /usr/bin/kbluetooth4


Means it's starts running. When I run kbluetooth4-devicemanager, I get the following error message.



$kbluetooth4-devicemanager
QDBusObjectPath: invalid path ""
process 3001: arguments to dbus_message_new_method_call() were incorrect, assertion "path != NULL" failed in file dbus-message.c line 1070.
This is normally a bug in some application using the D-Bus library.
D-Bus not built with -rdynamic so unable to print a backtrace
KCrash: Application 'kbluetooth4-devicemanager' crashing...
sock_file=/home/Scorpian/.kde/socket-Avatar/kdeinit4__0


Same sort of error is given when I run the kbluetooth4-inputwizard

$kbluetooth4-inputwizard
QDBusObjectPath: invalid path ""
process 3031: arguments to dbus_message_new_method_call() were incorrect, assertion "path != NULL" failed in file dbus-message.c line 1070.
This is normally a bug in some application using the D-Bus library.
D-Bus not built with -rdynamic so unable to print a backtrace
KCrash: Application 'kbluetooth4-inputwizard' crashing...
sock_file=/home/Scorpian/.kde/socket-Avatar/kdeinit4__0


Bluetooth was working on the laptop before I installed fedora 11 on the laptop( It had Windows XP installed)

Could anybody help?

Thanks,

Nivantha
I'm admittedly not an expert on Fedora or on Bluetooth. But the first place I would start would be to see if your Bluetooth communications device was working. Bluetooth activity fundamentally comes down to the hci tools, so some helpful commands:

hcitool dev
(Displays local devices)

hcitool scan
(scans for remote devices)

See the hcitool man page for more info.

If your bluetooth card/dongle shows up and can detect remote bluetooth devices, this would at least indicate that it is working correctly and you don't need any extra drivers. If that is the case, you could try installing the gnome desktop environment and see if it works using the gnome-bluetooth utilities. If it works there, then you probably have either an actually software bug or a Fedora configuration problem, in which case you would want to send off a bug report to the Fedora maintainers.

Hope that helps a little.
 
Old 10-26-2009, 12:11 PM   #3
nivantha
LQ Newbie
 
Registered: Apr 2006
Distribution: Fedora
Posts: 17

Original Poster
Rep: Reputation: 0
Thanks CoderMan

I tried hcitool dev but nothing got displayed. However got it working. In a strange way though.


I installed gnome-bluetooth (yum install gnome-bluetooth)

Then when I tried the Kdebluetooth4, it started to work. Something must have been missing from the initial installation.
 
  


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