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From: Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: "Brown, Len" <len.brown@intel.com>, linux-acpi@vger.kernel.org
Subject: Re: ACPI breakage (Re: 2.6.19-rc6: known regressions (v2))
Date: Mon, 20 Nov 2006 22:31:57 +0300	[thread overview]
Message-ID: <456202AD.9040204@linux.intel.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0611201020320.3692@woody.osdl.org>


Linus Torvalds wrote:
> [ Digression from testing Alexey's patch that makes the Evo work again 
>   with two separate threads ]
>
> On Mon, 20 Nov 2006, Linus Torvalds wrote:
>   
>> Ok, this one works for me too, and looks much simpler.
>>     
>
> Hmm. Some more testing shows that fan behaviour after a suspend-to-ram 
> event seems broken, but I suspect the breakage isn't new.
>
> It seems that ACPI remembers fan state from before the suspend, and then 
> (incorrectly) uses that to decide whether it should turn fans on or off. 
> So for example, it seems to remember that the fan was already on, so it 
> won't ever turn it on again - even though the suspend will obviously have 
> turned off all fans too.
>
>   
We have patches in #7122 for similar issue in suspend-to-disk, it may 
fix suspend-to-ram too?
It's related to order of ACPI devices resume and _WAK method execution.

Thanks,
    Alex.

  reply	other threads:[~2006-11-20 19:33 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-18 19:01 ACPI breakage (Re: 2.6.19-rc6: known regressions (v2)) Starikovskiy, Alexey Y
2006-11-18 19:05 ` Linus Torvalds
     [not found]   ` <455FB44C.8050103@linux.intel.com>
     [not found]     ` <Pine.LNX.4.64.0611182048560.3692@woody.osdl.org>
     [not found]       ` <456043F7.1030105@linux.intel.com>
     [not found]         ` <Pine.LNX.4.64.0611201003540.3692@woody.osdl.org>
2006-11-20 18:27           ` Linus Torvalds
2006-11-20 19:31             ` Alexey Starikovskiy [this message]
2006-11-21  3:10             ` Sanjoy Mahajan
2006-11-20 22:13           ` Alexey Starikovskiy
  -- strict thread matches above, loose matches on Subject: below --
2006-11-18 16:23 Starikovskiy, Alexey Y
2006-11-18 17:12 ` Linus Torvalds
2006-11-18 19:05   ` David Brownell
2006-11-18 22:09     ` Linus Torvalds
2006-11-18 22:16       ` Adrian Bunk
2006-11-19  4:33     ` David Brownell
2006-11-20 18:46       ` David Brownell
2006-11-16  4:21 Linux 2.6.19-rc6 Linus Torvalds
2006-11-17 20:40 ` 2.6.19-rc6: known regressions (v2) Adrian Bunk
2006-11-17 23:58   ` ACPI breakage (Re: 2.6.19-rc6: known regressions (v2)) Linus Torvalds
2006-11-18  1:25     ` Linus Torvalds

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