Did you install the linux-modules-extra for 4.15.0-99-generic, I could not find the audio driver kernel modules from any of your logs.
That means you didn't install the audio driver.
Please check /lib/modules/4.15.0-99-generic/kernel/sound/pci/hda/, does this folder contains any ko?
Did you install the linux-modules-extra for 4.15.0-99-generic, I could not find the audio driver kernel modules from any of your logs.
That means you didn't install the audio driver.
Please check /lib/modules/ 4.15.0- 99-generic/ kernel/ sound/pci/ hda/, does this folder contains any ko?