my ubuntu 18.04 was working fine..suddenly something went wrong and when i restarted my laptop.my ubuntu's sound was gone.Its now showing Dummy output. when i try aplay -l it shows
aplay: device_list:270: no soundcards found... i have tried many things even resetting alsa..but nothing is working..
also windows is working fine
Problem Solved. link to the solution: https://www.linuxuprising.com/2018/06/fix-no-sound-dummy-output-issue-in.html
