[ 18.460034] AC'97 1 does not respond - RESET
[ 18.460239] AC'97 1 access is not valid [0xffffffff], removing mixer.
[ 18.460245] Unable to initialize codec #1
Please try disabling PA autospawn (as documented at https://wiki.ubuntu.com/PulseAudio/Log), doing sudo alsa force-reload, then reenabling PA autospawn.
From your BootDmesg.txt:
[ 18.460034] AC'97 1 does not respond - RESET
[ 18.460239] AC'97 1 access is not valid [0xffffffff], removing mixer.
[ 18.460245] Unable to initialize codec #1
Please try disabling PA autospawn (as documented at https:/ /wiki.ubuntu. com/PulseAudio/ Log), doing sudo alsa force-reload, then reenabling PA autospawn.