Help Rogue sound on unlock

[autolyse]

I'm getting a rogue beep immediately after unlocking the screen and it's driving me nuts.

It's not the screen unlock sound - I have this disabled - and I've been through every single app setting I can find but still the blasted beep.

I even booted into safe mode and no joy. Has anyone else got this problem or know how to get rid of it?

Thanks.

 

[alfick3]

Hasn't happened to me.

Edit: change hadn't to hasn't, darn auto correct.

 

[autolyse]

Solved, but it took a factory reset to do it.

If anyone's interested, I think my volume settings became screwed somehow.

Before, whenever I changed the "Music, video, games & other media" volume level it would always reset to maximum after each screen unlock. I think the rogue sound must have been some sort of error beep relating to this. Also I couldn't find that particular beep among the notification sounds available.

Anyway, I seem to be sorted now. Thanks for looking.