Lost sound in 15.10 few days after installing it on Lenovo T60

[yacinkov]

Output volume in Sound Preferences window is in the highest setting, and the sound icon on my bar indicates so, yet I no longer have sound. I installed Ubuntu Mate 15.10 a month ago on my Lenovo T60 and last week I lost all sound. When I boot into Windows 7 I do have sound.

[wolfman]

Hi @yacinkov,

have you done a full system update?:

Ubuntu Mate Update Guide

These are my own setting preferences, use at your own risk!. AN IMPORTANT NOTE FOR LINUX BEGINNERS. WHEN YOU ARE IN RECOVERY MODE, THE KEYBOARD DEFAULTS TO US ENGLISH, IF YOU HAVE ANY OTHER LANGUAGE KEYBOARD OTHER THAN US ENGLISH, WHEN YOU TYPE "Y" (FOR "YES"), IT MIGHT SHOW UP AS A DIFFERENT LETTER, ON MY KEYBOARD I MUST PRESS THE "Z" KEY WHICH EQUATES TO "Y" AS I HAVE A GERMAN KEYBOARD, JUST PRESS "BACKSPACE" AND HIT A DIFFERENT KEY UNTIL YOU SEE THE "Y" SHOW UP!. Click on "Subscri…