Qt D-Bus

daniil

Hi,

It may not relates directly to qt.
I have created simple d-bus application it works fine on desktop, but when I try to run it in embedded linux it says.
"Not connected to D-Bus server"

I am new to d-bus and I don't even know what to begin from to start to debug it. Maybe it possible to output some additional information.

Regards,
Daniil

mlong

Is a dbus daemon running on the embedded system?

daniil

Yes.

I noticed one thing, on my desktop I see dbus-daemon and dbus-launch.
But on embedded system only dbus-daemon.

I don't know is it ok or not. If I run dbus-launch another dbus-daemon appears.

jkcha

Hi
I have the same problem when running from embedded.
I put libdbus-1.so, libQtDBus.so.4, libQtXml.so.4, libexpat.so.1 along with a test executable below.

The following is the test code for checking DBus Connection.

#include <QtCore>
#include <QtDBus>

int main( int argc, char *argv[] )
{
QCoreApplication app(argc, argv);

QDBusConnection bus = QDBusConnection::sessionBus();

if (!QDBusConnection::sessionBus().isConnected()) {
    qDebug() << "DBUS Connection Fail";
    return 1;
}
QStringList serviceNames = bus.interface()->registeredServiceNames();
qDebug() << serviceNames;

return app.exec();

}

In addition I set /opt/arm/dbus/lib to the LD_LIBRARY_PATH.

Does anyone know how to solve this problem regarding
checking sessionBus?