I recently put together a new machine with Ubuntu 9.10 I couldn't boot it even live (or any live distro for that). It wound up being either a ACPI or APM setting in the BIOS that got it to boot, I say either because I spent probably 10 hours in there turning things on and off until it worked. It was about 4am so my memory of it ain't that great. TO get up to date, I was adding a HDD and having some issues with it being detected right. So back in the BIOS I was and accidentally loaded the defaults! NOW I can't figure out what I did last time I've been at it for hours with no luck. If I jump into grub b4 it boots and add the acpi=off the system boots up but with the side effects of no pwr mgmt, I need it to be able to sleep and shut itself off. I've always had good luck with Ubuntu in other machines so I'm not that great in there, and honestly don't know the difference between apm/acpi.

The MOBO is an ASUS P4C800 Deluxe, AMI Bios

I'm gunna keep at it in the mean time, if by any chance I figure it out I'll post what it was (after I write it down).

Thanks in advance

Please let us know exactly what settings are available in your bios for ACPI and APM.

I have an Asus P5Q SE/R MOBO with Ami Bios and Marvell chipset, but our bios'es may not be exactly the same.

I have to hit escape on boot with ubuntu 9.10. Then in the grub tap t E key run my arrows to splash part type acpi=off after it. last type ctrl X then mine will boot. Trying to find out how to put that in grub 2 menu Right now but don't know how because it can't be edited? Don't know if my prob is the same or not?

Currently on a Toshiba Satellite L505D-GS6000