Well trying to fix this one… I tried may solution… After that lot of many small annoying bugs started to show… SO i reinstalled the opensuse 11 and kde4.1 with xinephonon backend… not strangely it works…
I am having the same issue. The system notifications have worked intermittently with both KDE 4.1 and Gnome. I don’t know what changes but they will just stop working. I get sound in Firefox and mplayer. I found this link about the problem in the KDE forum: System Notification sounds not playing - Graphics & Multimedia - KDE-Forum.org
I am having some trouble finding the kcontrol to check. I tried typing it in the search in the Kmenu but it didn’t seem to find it and was only looking to search on the web. If I find a solution I will post it here.
While I don’t have KDE-4.1 (I am running only KDE-3.5.9 on openSUSE-11.0 on a test PC), I am trying to keep the openSUSE audio troubleshooting guide reasonably current and helpful. It has been a challenge to keep that guide current, given the new round of problems introduced as a result of the big changes to sound in openSUSE-11.0 and KDE4.
Hence I added a short Step-7 and Step-8 to the audio troubleshooting guide (referencing other pages) to provide a small measure of help for Pulse Audio and for Phonon. More help is most definitely needed and welcome from anyone who can help contribute and improve the audio troubleshooting guide: SDB:AudioTroubleshooting - openSUSE
Further to this, I am thinking of creating an opensuse page on Phonon for kde users, to address Phonon related sound problems. The idea is it would start off with a paragraph describing what phonon is supposed to do (I’ll copy that from the sound concepts page: Phonon Sound-concepts - openSUSE ) and then give troubleshooting hints (I’ll copy that from the KDE phonon troubleshooting page): Help & Documentation: Phonon, Open Source Multimedia
I had issues with my notification sounds in KDE 4.1 as well, but I fixed it by switching from the Gstreamer backend to the Xine backend (put Xine as higher priority). It works better than the Gstreamer IMHO.