Comment 8 for bug 184883

I cannot tell whether the issue is the same, but the Ubuntu 8.04-beta as well as -rc (both are desktop amd64 versions) keep crashing immediately upon boot on an AMD64 system with 4GB of RAM here. Adding a mem= boot option to restrict memory to 3GB helps (but cannot get passed to the disk check nor the memtest, which crashes, too).

Ubuntu 7.10 as well as Knoppix 5.3 and some Debian 4 based VDR system run fine on this very machine. Although all of them are 32bit versions, the Ubuntu 8.04 CDs were the only 64bit software which I've tried so far.

I'm following up here since no other report with the "panic" or "kernelpanic" keywords seems to apply to what I'm experiencing.