Bug#639331: linux-image-2.6.36-rc6-686-bigmem: Closing laptop lid hangs the system on Dell studio 1555

[Jonathan Nieder <jrnieder@gmail.com>]

Thibault Manlay wrote:

[...]
> I will do this sometime tomorrow but I think this may take a while :-)

Thanks!

> I have a friend with the same hardware as me, although he is running
> stable I think it would be pertinent trying a recent kernel on his
> laptop even if I'm pretty sure of the result.
>
> Btw, would a debug of APIC/LAPIC informations at boot be useful here?
> (kernel parameters "apic=debug show_lapic=all")

In that direction, the most useful things might be:

 1. Report this upstream at <http://bugzilla.kernel.org/>, product
    ACPI and let us know the bug number so we can move to there. :)
 2. Run acpidump and attach its output to the upstream bug.
 3. Enable CONFIG_ACPI_DEBUG (make nconfig → Power Management and ACPI
    options → ACPI Support → Debug Statements) and run something like

	echo _LID >/sys/module/acpi/parameters/trace_method_name
	echo 0xffffffff >/sys/module/acpi/parameters/trace_debug_layer
	echo 0xffffffff >/sys/module/acpi/parameters/trace_debug_level
	echo 1 >/sys/module/acpi/parameters/trace_state
	grep . /proc/acpi/button/lid/LID*/state

    (see Documentation/acpi/method-tracing.txt for details).