I have the sound popup thingy displayed about every minute, even without changing any volume settings, or clicking/pressing anything. It's happening in xubuntu 13.10 and looks like this
How can I fix it?
Check your keyboard media keys, they are the usual suspects. Also verify what key combination you have to change the volumes, if you have set a more common key. If it's regular check the cron jobs using
If anything, I got it fixed by killing
Now I don't get that annoying popup.
Btw here's another user having this problem (where I got the idea from): http://xfce.10915.n7.nabble.com/How-to-disable-notification-popups-td43164.html