Comment # 5 on bug 88493 from Andy Furniss

(In reply to Alex Deucher from comment #4)
> Created attachment 112574 [details] [review] [review]
> possible fix
> 
> I think this should fix it.

Partially - on head still pink line and no sound, but off/auto now gets sound
(and makes line disappear, but that happened without patch).

Can't test on my bad as it doesn't apply when reset there.

Will try a new bisect later.