THANK YOU for the ISO images here...
I have an old Imac mid-2006 intel, white plastic case. It has been sitting on a shelf literally for 10+ years.
Evaluating this MATE distribution for other reasons (raspberry PI), I stumbled onto a whim that I could maybe try running this distro on this old Imac. At first I tried the i386 release 18.04 from the downloads page. Slow and clanky as expected, but somewhat useable. meh.
Then I stumbled upon this thead, and tried the 20.04 ISO posted by KTrad. OMG what an improvement. I am able to run this machine with the latest 64bit kernel.. it is responsive and smooth with some light doomscrolling in chromium, can use it to ssh out to my other machines, I even took a zoom call on it. A NICE retro piece. I would not have believed that this could be done with a 15 year old box.
Even better: I can boot this kernel standalone to kodi-19 and stream live or recorded tv from my mythtv pvr! Unreal, it doesn't even lag once i turned off interlacing.
Again thanks to user KTrad for posting that ISO.. really a success story for this Imac, I'm still pinching myself, a great time killer project LOL, my wife thinks I'm nuts.
Next, I have a BIG 24-inch late 06 Imac of the same stripe which has Nvidia hardware issues (driver version 304 unsupported) which I have not been able to get working to my satisfaction yet. That's another thread.
cheers -bruce.