[Bug 577702] Re: ACPI errors at boot (HP 8540w Elite Workstation)

[FiX]

Aside this regression (kacpid taking ~100% cpu), there is another change
in 2.6.34 that null-ifies a previous workaround: the xhci (USB 3.0
module) that does not support suspend/resume was renamed xhci_hcd in
2.6.34. Adapting accordingly the content of the files /etc/pm/config and
/etc/pm/config.d/00sleep_module fixes the suspend/resume (but not the
kacpid taking 100% cpu)

# https://bugs.launchpad.net/ubuntu/+source/linux/+bug/522263
# https://bugs.launchpad.net/ubuntu/+source/linux/+bug/522998
SUSPEND_MODULES="xhci xhci_hcd"

The above mentioned work-around to disable IRQ's on GPE01 does not work
(even run as plain root instead of sudoer).

# echo disable > /sys/firmware/acpi/interrupts/gpe01

# cat /sys/firmware/acpi/interrupts/gpe01
   29441	enabled


** Tags removed: needs-upstream-testing

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ACPI errors at boot (HP 8540w Elite Workstation)
https://bugs.launchpad.net/bugs/577702
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