[DragonFlyBSD - Bug #2232] acpi - system cannot reboot or power down - 2.13.0.336.gacd31-DEVELOPMENT

[Alan K via Redmine <bugtracker-admin@xxxxxxxxxxxxxxxxxxxxx>]

Issue #2232 has been updated by Alan K.


I inserted lots of kprintf's to try to find out if the shutdown procedure was stopping somewhere.
(Please note: I do not know anything about the kernel and only know a little C).
This is what I found:

###########

In sys/kern/kern_shutdown.c, boot() calls "EVENTHANDLER_INVOKE(shutdown_post_sync, hoot);"

"EVENTHANDLER_REGISTER(shutdown_post_sync, module_shutdown, NULL, SHUTDOWN_PRI_DEFAULT);" is defined in sys/kern/kern_shutdown.c

This ends up in "module_shutdown(void* arg1, int arg2)"  in sys/kern/kern_module.c:

    for (mod = TAILQ_FIRST(&modules); mod; mod = TAILQ_NEXT(mod, link))
        MOD_EVENT(mod, MOD_SHUTDOWN);

This shuts down 195 modules and then gets to mod 'rootbus' and gets stuck.

MOD_EVENT never returns when mod is 'rootbus'.

I think this because I have kprintf's before and after the MOD_EVENT in the for loop.

###########

I looked into the shutdown procedure for 'rootbus'.

It seems to call "root_bus_module_handler(module_t mod, int what, void* arg)" in sys/kern/subr_bus.c

This calls "device_shutdown(root_bus)" which then calls "bus_generic_shutdown(dev)"

bus_generic_shutdown(device_t dev)
{
        device_t child;

        TAILQ_FOREACH(child, &dev->children, link)
                device_shutdown(child);

        return(0);
}

I put kprintfs before and after the "device_shutdown(child);" in the TAILQ_FOREACH. 
I can see that it goes through lots of interfaces but then gets stuck. This is the last output I see:

AK: bus_generic_shutdown(): Calling device_shutdown(): ehci0
AK: bus_generic_shutdown(): Calling device_shutdown(): 'usb3'
AK: bus_generic_shutdown(): Calling device_shutdown(): 'uhub3'
AK: bus_generic_shutdown(): Returned device_shutdown(): 'uhub3'
AK: bus_generic_shutdown(): Returned device_shutdown(): 'usb3'

###########

I don't know what it means but I hope it helps!
----------------------------------------
Bug #2232: acpi - system cannot reboot or power down - 2.13.0.336.gacd31-DEVELOPMENT
http://bugs.dragonflybsd.org/issues/2232

Author: Alan K
Status: New
Priority: Normal
Assignee: 
Category: 
Target version: 


Versions:

Workstation: Lenovo Thinkcentre M58p
DragonFlyBSD: v2.13.0.336.gacd31-DEVELOPMENT X86_64_GENERIC  x86_64

#########

Problem Overview:

My system cannot reboot or power down using ACPI. It stops after the following:
Syncing disks…
done
Uptime: 11m24s

I've tried with the commands:
shutdown -p now 
shutdown -r now
reboot

power down and reboot work okay with FreeBSD 9.0 RC1 

#########

ACPI info from sysctl:

hw.acpi.power_button_state: S5

dfbsdp# sysctl -a | grep -i acpi
kern.cputimer.select: HPET ACPI-safe24 i8254_timer2 dummy
debug.acpi.level: NONE
debug.acpi.layer: NONE
debug.acpi.suspend_bounce: 0
debug.acpi.do_powerstate: 1
debug.acpi.acpi_ca_version: 20110211
debug.acpi.ec.timeout: 750
debug.acpi.ec.polled: 0
debug.acpi.ec.burst: 0
debug.acpi.semaphore_debug: 0
hw.acpi.supported_sleep_state: S3 S4 S5
hw.acpi.power_button_state: S5
hw.acpi.sleep_button_state: S3
hw.acpi.lid_switch_state: NONE
hw.acpi.standby_state: S1
hw.acpi.suspend_state: S3
hw.acpi.sleep_delay: 1
hw.acpi.s4bios: 0
hw.acpi.verbose: 1
hw.acpi.disable_on_reboot: 0
hw.acpi.handle_reboot: 1
hw.acpi.reset_video: 1
hw.acpi.cpu.cx_lowest: C1
hw.acpi.cpu0.cx_supported: C1/1 C2/1
hw.acpi.cpu0.cx_lowest: C1
hw.acpi.cpu0.cx_usage: 100.00% 0.00% last 5000us
machdep.acpi_timer_freq: 3579545
machdep.acpi_root: 1009904


#########

dfbsdp# acpiconf -s S5
acpiconf: invalid sleep type (5)

#########

# acpidump -dt > out.asl

Output from "iasl out.asl":

your.asl   1264:         Method (WQA0, 1, NotSerialized)
Warning  1088 -                     ^ Not all control paths return a value (WQA0)

your.asl   2122:                         And (CAPB, 0xFFFFFFFC)
Warning  1106 -                                  ^ Result is not used, operator has no effect

your.asl   2123:                         Or (CAPB, 0x00)
Warning  1106 -                                 ^ Result is not used, operator has no effect

your.asl   2290:                 DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite,
Error    4123 -                                              ^ Min/Max/Length/Gran are all zero, but no resource tag

your.asl   2926:             Name (NATA, Package (0x03)
Remark   5048 -                                      ^ Initializer list shorter than declared package length

your.asl   3386:                             Or (0x03, PARM)
Warning  1106 -                                     ^ Result is not used, operator has no effect

your.asl   9648:     Method (_WAK, 1, NotSerialized)
Warning  1081 -                 ^ Reserved method must return a value (Integer/Package required for _WAK)

ASL Input:  your.asl - 11164 lines, 411038 bytes, 4585 keywords
Compilation complete. 1 Errors, 5 Warnings, 1 Remarks, 1259 Optimizations

#########

Followed the debug instructions for acpi in http://www.dragonflybsd.org/docs/handbook/handbook-acpi-debug/ but cannot set the debug layers/levels

# cd /sys/dev/acpica5 && make clean && make ACPI_DEBUG=1
# mv acpi.ko /boot/kernel

Adding the below to /boot/loader.conf causes a crash during boot. The error is "Fail trap 12: page fail while in kernel mode" and then enters DD:

debug.acpi.layer="ACPI_ALL_COMPONENTS ACPI_ALL_DRIVERS"
debug.acpi.level="ACPI_LV_ERROR"

Adding those options using sysctl causes the system to hang (although I can turn on and off num lock on the keyboard in this state)

#########

Attached dmesg and messages after verbose boot


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