I have an ASUS ZenBook Flip UX461UN-DS74T. I installed Ubuntu 19.04 on it and it was great. Had some issues but it worked. After updating to 19.10 I kept having freezes and crashed. Eventually I solved that with a different nvidia driver. After an update today the issue came back. I tried different video drivers but it kept crashing. Now I can’t even get it to boot. I tried using nomodeset but when it loaded it kept saying: unable to mount codec (some audio codec).

I’m also having issues booting from a USB on the laptop. I’m not sure if that’s related to Ubuntu or not. I did it when I installed Ubuntu but since then I couldn’t.