Comment # 1 on bug 91041 from robotbuilderfiletransfer@gmail.com

(In reply to robotbuilderfiletransfer from comment #0)
> The problem can be sloved by executing this command: "xrandr --output HDMI-0
> --auto --set audio off".
> I found a simillar, but very old (6 years old), bug here:
> https://bugs.freedesktop.org/show_bug.cgi?id=23384.

I am using the xf86-video-ati driver.  My kernel version is 4.0.5-1.