[SOLVED] No sound coming from speakers

[pharpend]

Hello, all.

I have a Lenovo T530. Up until today, my integrated speakers worked. Now, they have suddenly stopped. Sound works with headphones.

I am running Mint 13 with MATE. Kernel v. 3.6.1.

Thanks in advance.

UPDATE

I downgraded my kernel to 3.4.8, and the problem seems to have gone away.