I had the exact same problem of infinite reboot loop, and then I read this bug report. I think this is actually not a Ubuntu x64 or any Linux x64 distribution bug, but a bug in the computer. I am using Samsung R710, and this problem went away after I installed a new BIOS (version 11SV), released by Samsung on the 12th of January 2010.
So in my case this was a BIOS problem, and not Ubuntu or Linux problem. My first suggestion is to check if there is a newer BIOS available, install it, and check all of the settings! -- 64-bit Intrepid automatic permanent reboot loop related to having exactly 4GB of memory https://bugs.launchpad.net/bugs/272530 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
