https://askubuntu.com/questions/55868/installing-broadcom-wireless-drivers
It's unusual for ubuntu not to support wifi out of the box unless it's some sort of obscure hardware. First step is to figure out what your wifi device is and then search for the proper driver for it.
Increased reports since 6.15.3 of corruption within the log tree
Seems like a btrfs bug. Bunch of links in that thread with similar reports and screenshots. They also include the suggested fix.