Timothy Murphy wrote:
In the last couple of weeks I've had a curious problem
on my Fedora-24/KDE Thinkpad T510 laptop.
Sound (on YouTube for example) starts up fine on Firefox,
but then suddenly stops working after 5 to 30 minutes.
I have had a similar problem since a couple of months (since
F24ß was released?).
I don't use Chrome enough on a regular basis to be able to
confirm, but Firefox is stricken. I'll decide to play some
videos on YT using Firefox and there is no sound. I open
other tabs and try. Typically, nothing. Rarely, this appears
to fix the problem. Sometimes, I open VLC and play a video
stored on my computer. This appears to be the most reliable
solution for me. Perhaps a logout/in.
I've always managed to get it working without rebooting, but
it takes a lot of fiddling. I have no idea what causes it and
there are no clues that might suggest a culprit.
There is this report:
https://bugzilla.mozilla.org/show_bug.cgi?id=803042
I haven't tried the suggestion about modifying asoundrc.
There is a similar report on archlinux (I find them to be a
pretty reliable bunch of guys that have lots of information
that has helped me out a lot with problems).