Again, none of the SecureDisplay/TA warnings are an issue. If you google them, you'll find they are common. I have them on my system too.
What might help is to look at log from a failed boot. After you have a failed boot and then boot successfully, get the log from the previous boot with: sudo journalctl -b -1 > prevboot.txt Attach file here. ** Changed in: xserver-xorg-video-amdgpu (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-amdgpu in Ubuntu. https://bugs.launchpad.net/bugs/2102188 Title: amdgpu: Secure display: Generic Failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/2102188/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp