i386/97468: [acpi] ACPI on ASUS A7V hangs on shutdown -p (power off)

[Martin Birgmeier]

>Number:         97468
>Category:       i386
>Synopsis:       [acpi] ACPI on ASUS A7V hangs on shutdown -p (power off)
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu May 18 19:10:15 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Martin Birgmeier
>Release:        FreeBSD 6.1-RELEASE i386
>Organization:
MBi at home
>Environment:
System: FreeBSD gandalf.xyzzy 6.1-RELEASE FreeBSD 6.1-RELEASE #1: Tue May 16 21:10:15 CEST 2006 root at gandalf.xyzzy:/d/6s4e/OBJ/FreeBSD/RELENG_6_1_0_RELEASE/src/sys/GANDALF i386

>Description:
	Using 'shutdown -p' or 'reboot -p' on an ASUS A7V results in a hang
	after the disks have been synced.

	Using a kernel compiled with ACPI_DEBUG and the following
	/boot/loader.conf settings:

	    debug.acpi.layer="ACPI_BUTTON ACPI_POWER"
	    debug.acpi.level="ACPI_LV_FUNCTIONS"

	will give the following additional messages during startup
	(not really interesting):

	    BUTTON-0132 [18] acpi_button_attach    : ----Entry
	    BUTTON-0168 [18] acpi_button_attach    : ----Exit-        0       0

	and after reboot -p (this seems interesting):

	    POWERRES-0510 [35] acpi_pwr_wake_enable  : ----Entry
	    POWERRES-0748 [36] acpi_pwr_find_consumer: ----Entry
	    POWERRES-0756 [36] acpi_pwr_find_consumer: ----Exit- 0
	    POWERRES-0246 [36] acpi_pwr_register_cons: ----Entry
	    POWERRES-0748 [37] acpi_pwr_find_consumer: ----Entry
	    POWERRES-0756 [37] acpi_pwr_find_consumer: ----Exit- 0
	    POWERRES-0266 [36] acpi_pwr_register_cons: ----Exit- AE_OK
	    POWERRES-0748 [36] acpi_pwr_find_consumer: ----Entry
	    POWERRES-0756 [36] acpi_pwr_find_consumer: ----Exit- 0xc566cda0

	Obviously, acpi_pwr_wake_enable never returns, but I am not enough of
	an ACPI expert to gauge this output.

>How-To-Repeat:
	See description.

>Fix:
	I found the following web page:

	    http://www.ussg.iu.edu/hypermail/linux/kernel/0201.3/0138.html

	But I have no idea what I could possibly do with this information.

>Release-Note:
>Audit-Trail:
>Unformatted: