I made a boot drive wth Kali Linux with persistence, and I just updated it yesterday. It took almost 30 HOURS to run all of the updating. Afterward, I decided it would be a good idea to reboot, so I did so within Kali.
Now, it boots to the screen where it asks how I want to boot. I pick "Live USB with Persistence" and it starts out normally with the black screen and wall of scrolling text. Then after a while, around when it starts initializing bluetooth stuff, it starts giving me the same error over and over indefinitley.

"atkbd serio0: unknown key pressed" and it wants me to set a keycode or something (which I can't do because I can't get into the OS to use a terminal).
During this time, the screen also turns off and on again repeatedly.

It took me so long just to get this **** USB working and then after 30 hours of updating I get hit with more troubleshooting. If anyone knows how to fix this quickly, please let me know asap.