Public bug reported:

My laptop, a hp hdx 9300, often doesn't boot with Ubuntu Karmic 9.10 Alpha 3 
(64 bit). This is a regression, since it worked (albeit with some quirks) okay 
on 9.04 and 8.10 (it had a beeping problem that was solved for me when I 
removed the quiet option from the boot options. see 
https://bugs.launchpad.net/ubuntu/+source/usplash/+bug/279187)
Both the live cd and the installed OS hang on boot pretty often (say 3 of 4 
attempts). With the quiet options it might even be more often (I didn't gather 
reliable statistical data). The only remedy is to shut down the laptop then, 
ctrl + alt +del is ignored.

When I use acpi=off or acpi=noirq I can boot into alpha 3, but of course
I want to have full power management (I'm currently running Fedora 11
without any of these problems).


I'm attaching a screenshot of the messages (the hang happens so early that no 
log file is written) and a lscpi-dump from Fedorra 11.

** Affects: ubuntu
     Importance: Undecided
         Status: New

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Regression: HP hdx 9300 often hangs on boot with acpi enabled
https://bugs.launchpad.net/bugs/410984
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