Subject: Re: 2.6.0-test3+bk: ACPI does not switch off the computer
From: Micha Feigin <michf@post.tau.ac.il>
To: Kernel list <linux-kernel@vger.kernel.org>
In-Reply-To: <20030822062945.GA1128@steel.home>
References: <20030822062945.GA1128@steel.home>
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Date: Sat, 23 Aug 2003 00:41:34 +0300
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On Fri, 2003-08-22 at 09:29, Alex Riesen wrote:
> Actually it started happening from -test3.
> The last I see on screen is "Power down." and the system is halted.
> CAD reboots it.
> 

I have the same problem with some kernels (I get this with 2.4.21, don't
think with 2.6.0-test3-bk8 but not sure since its very unstable on my
machine and I don't have the time to play with it now).

The solution was to change the sleep level for ACPI when turnign of from
S5 to S4 (don't know why this works). In the file 
kernel-source-2.6.0-test3-bk8/drivers/acpi/sleep/poweroff.c
function
acpi_power_off
try replacing ACPI_STATE_S5 with ACPI_STATE_S4

> -alex
> 
> #
> # Power management options (ACPI, APM)
> #
> CONFIG_PM=y
> # CONFIG_SOFTWARE_SUSPEND is not set
> 
> #
> # ACPI (Advanced Configuration and Power Interface) Support
> #
> CONFIG_ACPI_HT=y
> CONFIG_ACPI=y
> CONFIG_ACPI_BOOT=y
> CONFIG_ACPI_SLEEP=y
> CONFIG_ACPI_SLEEP_PROC_FS=y
> CONFIG_ACPI_AC=m
> CONFIG_ACPI_BATTERY=m
> CONFIG_ACPI_BUTTON=m
> CONFIG_ACPI_FAN=m
> CONFIG_ACPI_PROCESSOR=m
> CONFIG_ACPI_THERMAL=m
> # CONFIG_ACPI_ASUS is not set
> # CONFIG_ACPI_TOSHIBA is not set
> # CONFIG_ACPI_DEBUG is not set
> CONFIG_ACPI_BUS=y
> CONFIG_ACPI_INTERPRETER=y
> CONFIG_ACPI_EC=y
> CONFIG_ACPI_POWER=y
> CONFIG_ACPI_PCI=y
> CONFIG_ACPI_SYSTEM=y
> 
> #
> # APM (Advanced Power Management) BIOS Support
> #
> # CONFIG_APM is not set
> 
> -
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-- 
Micha Feigin
michf@math.tau.ac.il

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