I installed Ubuntu 12.10 on my Alienware M15x-R1 and love it, but whenever I properly shut down or reboot from within Ubuntu, when I access Windows my headphone jack doesn't work, it reads headphones are plugged in but it doesn't send sound, essentially it's muted. This wasn't happening before Ubuntu. The jack works fine in Ubuntu. All drivers are updated.
When I manually force shut down with my power button, the headphone works, so Ubuntu is somehow muting my jack when shutting down. Is there anyway to prevent this or not allow Ubuntu access to Windows privileges? Something? I love Ubuntu and plan on continuing to use it, but manually shutting down each time is going to be a pain and is really only a temporary solution, any help is greatly appreciated!