Date: Sun, 12 Dec 2004 00:22:54 -0600 From: Eric Anderson <anderson@centtech.com> To: Nate Lawson <nate@root.org> Cc: acpi@freebsd.org Subject: Re: suspend/resume improved? Message-ID: <41BBE3BE.8090201@centtech.com> In-Reply-To: <41BB5146.1080102@root.org> References: <41B4E577.9060502@root.org> <41B50754.10604@centtech.com> <41B50C12.6070103@root.org> <20041208095845.GA896@galgenberg.net> <41B76AF2.3040204@root.org> <20041210180446.GA768@galgenberg.net> <41B9EE4E.8030703@root.org> <20041210205417.GB768@galgenberg.net> <41BB5146.1080102@root.org>
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Nate Lawson wrote:
> Ulrich Spoerlein wrote:
>
>> On Fri, 10.12.2004 at 10:43:26 -0800, Nate Lawson wrote:
>>
>>>> Line 444 is the culprit:
>>>> ACPI_FLUSH_CPU_CACHE ();
>>>>
>>>> Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK,
>>>> ACPI_REGISTER_PM1A_CONTROL, PM1AControl);
>>>> if (ACPI_FAILURE (Status))
>>>> {
>>>> return_ACPI_STATUS (Status);
>>>> }
>>>>
>>>> Putting the loop before AcpiHwRegisterWrite will enter infinite loop,
>>>> putting it after it -> Reset
>>>
>>>
>>> Interesting. If you add a "DELAY(10000);" before the register write,
>>> does this help? A more likely issue is that we need to write pm1a/b
>>> at the same time. Let me think about this and get you more info later.
>>
>>
>>
>> It "looks" like the delay does nothing, however I noticed that all three
>> LEDs (num/scroll/caps lock) were lighting up for 1-2s.
>>
>> I then swapped pm1a and pm1b, but nothing changed.
>
>
> That's not quite what I meant. The acpi-ca code splits the write of
> SLP_TYP and SLP_EN into two separate writes. I suspect some BIOSes
> don't like this. Try the attached patch that combines them.
I just tried this patch (my laptop is having similar responses) - no
change. I'm off to adding some manual debug code to the acpi source
files you mentioned in an earlier email.
I can't seem to find Warner's beep code patch though - do you have a
pointer?
Eric
--
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Eric Anderson Sr. Systems Administrator Centaur Technology
When in doubt, mumble; when in trouble, delegate; when in charge, ponder
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