I had similar issues with sound disappearing for seemingly no reason (sometimes due to suspend-resume, sometimes from docking) after upgrading from 12.04 to 12.10 on my ThinkPad T430s - also Intel audio, though mine is listed as "Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)".
After finding this answer at AskUbuntu: http://askubuntu.com/questions/203312/how-come-my-sound-wont-work-on-lenovo-thinkpad-x230 - I've gotten sound working again. Just open up alsamixer from a terminal and disable Auto-Mute (right arrow to highlight, down arrow or minus key to disable). Worth a shot if you haven't tried it yet, I had played with various settings in alsamixer prior to finding this, but had never thought to disable something as innocuous as Auto-Mute. Sound had even stopped working at the point that I'd found this and immediately began working again after disabling Auto-Mute. Hopefully something this simple helps your situation as well. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1066353 Title: [Dell Studio 1458] No sound after suspend (Ubuntu 12.10 64bit) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1066353/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
