Kernel hangs on boot after loading ACPI (HP Compaq nx9005)

Bug #11941 reported by Christian Luiijten on 2005-01-15
Affects Status Importance Assigned to Milestone
linux-source-2.6.15 (Ubuntu)
Fabio Massimo Di Nitto

Bug Description

On my notebook, HP Compaq nx9005, I cannot use the Ubuntu stock kernels, for
they hang immediately when ACPI is loaded. acpi=off "solves" this.

I built a custom kernel using a DSDT from
which works fine. However, also without this DSDT, the kernel would boot
correctly /with/ ACPI.

What kernel version?

Matt Zimmerman (mdz) wrote :

Did you build your custom kernel based on Ubuntu sources or sources
(which release?)

Chuck Short (zulcss) wrote :

From the web page referenced in the bug:

STOP! There may be problems with the procedures below. Use at your own risk.
See this thread on the ACPI-devel list for more info.

Chuck Short (zulcss) wrote :

Closing bug no response from user. Please re-open if you still have a problem.

I've the same problem!! I've tried with Ubuntu 8.04, 810 and the alpha 6 of latest version...
I can't run Ubuntu 'cause it hang immediately when the system is starting (both live cd and direct installation)... :(

It's an hardware incompatibility... :(

Nobody can help us? :(

Changed in linux-source-2.6.15 (Ubuntu):
status: Invalid → Confirmed

Hi, I would like to confirm this bug.
My hardware configuration is:

Motherboard: Asus P4V8X-X
CPU: Celeron 2.4GHz
RAM: 768MB PC3200
Bios version: 02.54
Bios manufacturer: American Megatrends
Bios configuration:
- USB 1.1 ports => 8 ports
- UBS 2.0 ports => enabled
- USB legacy support => auto
- USB 2.0 => HiSpeed (480Mbps)
MPS Revision: 1.4
OnBoard LAN: enabled
OnBoard Boot Rom: disabled
OnBoard AC'97 audio: disabled
OnBoard SATA Rom: disabled
ACPI APIC: Enabled
API: Disabled

Ubuntu 9.04, Stock kernel 2.6.24-14

Booting in recovery mode, the system hangs after having recognized power on, stanby, ecc. acpi buttons.
If I disable ACPI in BIOS; or add the kernel parameter acpi=off, then the system boot normally.

Changed in linux-source-2.6.15 (Ubuntu):
status: Confirmed → Invalid
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