Please try some older kernels and try to find out the last kernel version where sound was working for you:
https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ** Summary changed: - [MXG071, SigmaTel STAC9228, Speaker, Internal] No sound at all + [Dell MXG071, SigmaTel STAC9228, Speaker, Internal] No sound at all ** Changed in: alsa-driver (Ubuntu) Status: New => Incomplete ** Package changed: alsa-driver (Ubuntu) => linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1829685 Title: [Dell MXG071, SigmaTel STAC9228, Speaker, Internal] No sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1829685/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
