Someone at gitlab.freedesktop.org's forum adviced that I could get a minimal installation of GL drivers supporting AMD ROCm on 24.04 by use of the command,
sudo amdgpu-install --usecase=graphics,dkms
After a minute of installation, a screen came up, looking like an old DOS screen, telling me that because I have secure boot enabled I was going to have to set a password, and enter it again upon reboot. I entered a password, it gave me an error message I do not remember; I hit PrintScreen to save it, but now I have no access to it. Something about pkg returning error. I entered reboot and it rebooted.
After the bios screen, another screen opened up asking me cryptic questions; it had a main selection for boot, ubuntu and hash, like, what could it possibly mean? I selected ubuntu, and it presented me a number of arcane choices, incomprehensible; I selected the first, then it asked for the password, I entered it, and nothing else I selected from those menus worked. So I hit the reboot menu.
When it rebooted it showed me a white screen saying "Oh no! Something has gone wrong. A problem has occurred and the system can't recover. Please contact the administrator." The bad news is I'm the administrator, and I have no idea what to do now. I'm writing from my old laptop computer. My new rig is dead.
So, it "was" 24.04 with MATE, the hardware being AM5 mobo, Ryzen 5, 32 gigs DDR5.
Anything I can do to revive it? Would getting rid of secure boot help?