http://bugzilla.kernel.org/show_bug.cgi?id=7499
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------- Comment #25 from [EMAIL PROTECTED] 2007-08-16 13:55 -------
Puhh.
Some ideas (I couldn't really find anything):
- compile ACPI_DEBUG in and increase /proc/acpi/debug_level to 0x11F before
suspend. At least last lines which AML stuff got executed shortly before
the
hang might be interesting.
- The machine implements a PTS and a WAK function. Does it work if you
comment
out kernel code that invokes these, just comment out these in drivers/acpi/
hardware/hwsleep.c:
/* Run the _PTS and _GTS methods */
status = acpi_evaluate_object(NULL, METHOD_NAME__PTS, &arg_list, NULL);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
return_ACPI_STATUS(status);
}
and:
status = acpi_evaluate_object(NULL, METHOD_NAME__WAK, &arg_list, NULL);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
ACPI_EXCEPTION((AE_INFO, status, "During Method _WAK"));
}
- Maybe these iasl warnings are related:
DSDT.dsl 2702: Wait (\_SB.PCI0.DKSQ, 0x0BB8)
Warning 1103 - Possible operator timeout is ignored ^
I also have never seen ASL code playing around with signal() and event()
things.
Do you know how to override an DSDT table? If not, just ask.
If you do:
acpidump >acpidump
apcixtract -a acpidump
iasl -d DSDT.dat
iasl -sa DSDT.dsl
you get above warnings.
Do a grep DKSQ DSDT.dsl and comment out these lines in DSDT.dsl with:
//
recompile the DSDT.dsl with iasl -tc DSDT.dsl (AFAIK the output file you
need is xy.hex (dsdt.hex or DSDT.hex)
then you have two variables in .config:
ACPI_CUSTOM_DSDT
and
ACPI_CUSTOM_DSDT_FILE
The first one must be enabled.
The second one is a string config and must point to the above .hex file.
The recompile the kernel and reboot and you have overridden your DSDT table
and got rid of these strange DSKQ elements.
-> Also adding Alexey, he has deep knowledge in this stuff...
Alexey, it seems like we get a deadlock on a spinlock when waking up from
suspend to ram. If above suggestions don't bring anything, I am out of ideas...
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