linux-kernel - Re: A desktop environment[1] kernel wishlist

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Date:	Wed, 29 Oct 2014 12:19:56 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Bastien Nocera <hadess@...ess.net>, Pavel Machek <pavel@....cz>
CC:	John Stultz <john.stultz@...aro.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: A desktop environment[1] kernel wishlist

On 10/27/2014 07:31 AM, Bastien Nocera wrote:
> On Mon, 2014-10-27 at 10:28 +0100, Pavel Machek wrote:
>> Hi!
>>
>>>> I suspect wakeup type reporting is maybe not the best way to go about
>>>> this, since there may be a number of causes for wakeups and they can
>>>> arrive closely together in different orders, which can result in
>>>> races.
>>>>
>>>> For instance, if the machine suspends, and sets an alarm to be woken
>>>> up at midnight to do a backup, if the user resumes their laptop at
>>>> 11:59:59, should the backup still proceed at midnight?
>>>
>>> No. And I would expect that we would get a wake up type of "power
>>> button" or "lid open" in this case.
>>
>> I believe you should really use "is lid opened or AC or dock
>> connected" to determine if it was automatic resume or not. It should
>> work better and you can actually do it today.
> 
> There's no LID or docks on a tablet.

For a tablet, isn't the relevant piece of information whether the power
button was recently pressed, not whether the power button caused the wakeup?

It would be really annoying if there were a window around every RTC
wakeup during which pressing the power button didn't actually turn on
the screen.

--Andy
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