https://bugs.freedesktop.org/show_bug.cgi?id=88493
--- Comment #5 from Andy Furniss adf.lists@gmail.com --- (In reply to Alex Deucher from comment #4)
Created attachment 112574 [details] [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.