Not having internet in my apartment, I am using the .iso on a DVD. None of the questions and solutions regarding v21.04 installation would pertain to my problem. Here it is:
I have 3 computers. v21.04 would not install on either.
First computer:
MoBo: MSI x58A-GD45 socket 1366, XEON x580, 24 Gigs memory. Clean install (no partitions on disk). Blue Ubuntu Studio label on bottom of screen present. After some wait on top of screen I get the following (install doesn't even get to Live):
- Starting Set console scheme...
- A green small icon: Finished Terminate Plymouth Boot Screen
- Failed to start Disk Manager
- Failed to start Snap Daemon
- Failed to start Wait till snapd is fully seeded
Screen blank (that is, black), but mouse present and movable. Disk light off, no activity. Checked DVD integrity; fine, no problems showed. Downloaded the .iso again and made another DVD. Checked integrity, OK. I thought that, maybe 21.04 needs the computer to have UEFI. This doesn't so I moved on to computer Nr.2. This one has BIOS+UEFI.
MoBo: MSI x570 Gaming Edge WiFi, AMD Ryzen 5, gen 3, PCIe4, 32 Gigs.
Same situation, it doesn't even get to Live after the blue label on bottom of screen. So I waited again. This time the program started to look for all kinds of URLs and after giving up reaching them it prints this:
"Unable to find a medium containing a live file system". The drive is a dvd/blu ray. Finally, the .iso stops, showing BASH with initrams in parentheses and a cursor blinking. It takes some commands, I was able to look into the .iso's directories, but not much more.
Then, I moved to the third computer. This one has an ASRock Fata1ity Killer board with an Intel 4790 processor, 32 Gigs and a BIOS+UEFI arrangement. The situation is a copy cat of the first computer's. Nothing comes up. Not one of the computers gets even close to Live.