[Kde-hardware-devel] Re: Not receiving Solid::DeviceNotifier deviceRemoved() SIGNAL

[Christian Esken]

Am Donnerstag, 16. Juni 2011, 21:06:55 schrieb Christian Esken:
> Hello,
> 
> I am using Solid in KMix for Hotplug events. I receive the deviceAdded() 
> signal, but not the deviceRemoved() signal.


I should probably add that my code below is not new. I was receiving 
deviceRemoved() signals since a lot of KDE releases. Could this be an effect 
of moving away from HAL? I am running a recent distribution, which runs 
without HAL.

If somebody can give me a hint where to start I can try to investigate.
I am quite in a hurry, because I would like to see it fixed in KDE4.7.

Greetings, 
      Christian


> 
> This has really nasty impacts on KMix when repeatedly unplugging and 
> hotplugging. For example soundcard devices show up multiple times in KMix, 
and 
> it messes up internal reference counts and ultimately KMix crashes sooner or 
> later.
> 
> The code looks like this:
> 
> 
> void KMixDeviceManager::initHotplug()
> {
>     connect (Solid::DeviceNotifier::instance(), SIGNAL(deviceAdded(const 
> QString&)), SLOT(pluggedSlot(const QString&)) );
>     connect (Solid::DeviceNotifier::instance(), SIGNAL(deviceRemoved(const 
> QString&)), SLOT(unpluggedSlot(const QString&)) );
> }
> 
> Full code in 
> 
http://websvn.kde.org/trunk/KDE/kdemultimedia/kmix/core/kmixdevicemanager.cpp?revision=1180839&view=markup
> 
> Any help is greatly appreciated.
> 
> Greetings,
>       Christian
>