[Bug 549687] [NEW] Boot problems without acpi=off option added to kernel

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I'm using Ubuntu 9.10 and ever since I'm having boot problems. A
shutdown or reboot works perfect, but when I boot after shutting down
Ubuntu the PC sometimes hangs in the BIOS. Sometimes I get the message
"Reboot and select proper boot device or insert boot media in selected
boot device and press a key", but it also happens that I don't even see
a message and the system just hangs before loading GRUB 2. This didn't
happen when I used Ubuntu 9.04 or when I boot after using XP. I added
the option acpi=off to the kernel and that seems to solve the problem,
but I would really like to use Ubuntu in a normal way and with ACPI
enabled. I tested the HDD and memory and there were no problems
whatsoever. Could someone please help me out with this problem?

I attached all information that was asked, if I need to provide some
more information, please ask.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: acpi boot problems
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Boot problems without acpi=off option added to kernel
https://bugs.launchpad.net/bugs/549687
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