How to do subj? I don't like this «tick». And I haven't found this sound in «System Settings» → «Application and System Notifications».

Hi, there is already a report about that on Bugzilla: https://bugs.kde.org/show_bug.cgi?id=301836
I hope its being worked on, I don't like that sound either.

Interesting. I cannot reproduce this sound on my KDE Trunk system. If you kill knotify4 temporarily, does increasing or decreasing the volume cause it to be launched?

bcooksley wrote:Interesting. I cannot reproduce this sound on my KDE Trunk system. If you kill knotify4 temporarily, does increasing or decreasing the volume cause it to be launched?

I can't kill it! It is appearing again and again! (I'm trying to kill it with Ctrl+Esc task manager.)

Okay, that is not expected behaviour. KNoitfy4 should only be relaunched when a notification needs to be made.
As multiple users have reported this problem, I think this may be a problem with only new configurations. Can you reproduce this under a new user or is this a pre-existing user?

@bcooksley in kde4.14.3 this still happens, I've moved /usr/bin/knotify4 to /usr/bin/knotify4_old and killed it so no respawn, but the volume adjustement sound is still in place.

roybellingan wrote:@bcooksley in kde4.14.3 this still happens, I've moved /usr/bin/knotify4 to /usr/bin/knotify4_old and killed it so no respawn, but the volume adjustement sound is still in place.

You can disable it in KMix's settings, i.e. right-click on the KMix icon in the system tray, choose "Restore", and then click on the "wrench" icon to open the settings.
The first option in "General" is what you are looking for.

No need to remove knotify4 at all, and it doesn't change anything regarding that volume feedback as you noticed.

Or disable/uninstall PulseAudio, the volume feedback doesn't work without it...