Hi all! Sort of good news. I just upgraded after coming back to my desktop and was then having the exact same issue. I tried to track down the offending code, but the diff was enormous, so I couldn't really find anything. I did however, manage to find a temporary solution to the issue, which might point us in the right direction: Launch with: chromium --audio-buffer-size=8192 (I just tried a random number, a lower value might be fine).
When doing this here, the audio is fine again. So yes, it's basically the same age-old issue with PulseAudio and Chromium. Something must have changed that triggered this though, but without knowing the code, it's pretty much impossible for me to say what. Just to clarify, this is definitely not the same bug as Christopher Mark describes, as Ubuntu. Videos works fine for me. Only audio is affected. YouTube's HTML5 test shows that everything is okay here. chromium: 55.0.2883.75-1~deb8u1 pulseaudio: 5.0-13 also-base: 1.0.27+1
