This is probably a very weird coincidence, but it only happens with Ubuntu on my desktop. (ASUS P5ND-SLI mobo, 1 Gb Ram, Pentium D). When booting, both cold and restarts, it stops on the ASUS mobo splash screen.
I can get into BIOS setup only if I am pressing the button rapidly when I hit the switch. No changes in there need to be made, and none make a difference when I tried just out of frustration.
After many retries I eventually get Grub to appear and from there out Ibex starts wonderfully. I usually end up opening the case and verifying all connections are good (RAM, SATA cable, Graphics card, etc.). I cannot find that anything makes a difference, it is purely a random restart gets momentum and makes it through.
It sounds like a hardware issue or something, but it happened absolutely 0 times when I was running Arch. Anyone have any suggestions or something to test to get more info?