I have this bug , very annoying .
the only way to get sound to work is unplug power cord from PC for ~20 seconds and restart Ubuntu 14.04.
After entering Windows sound in Ubuntu distorted again.
(motherboard GA-Z97X-SLI , dual boot Windows 8.1 and Ubuntu 14.04 gnome)
I have this bug , very annoying .
the only way to get sound to work is unplug power cord from PC for ~20 seconds and restart Ubuntu 14.04.
After entering Windows sound in Ubuntu distorted again.
(motherboard GA-Z97X-SLI , dual boot Windows 8.1 and Ubuntu 14.04 gnome)