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Re: Hot MacBookPro Retina

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On 23/08/12 9:47 AM, Richard Maine wrote:
> qubit <qubit@quandoveloce.com> wrote:
>
>> On 23/08/12 12:39 AM, Jolly Roger wrote:
>>> In article <k12s19$qbh$1@speranza.aioe.org>,
>>>    qubit <qubit@quandoveloce.com> wrote:
>>>
>>>> I closed the lid on my MBP-R and left it in a thin computer type carry
>>>> bag for a few hours this afternoon. When I removed it it was hot, not
>>>> just warm but hot.
>>>>
>>>> The fan came on when I opened it, and it took perhaps 3-5 minutes before
>>>> drawing the desktop.
>>>>
>>>> This does not seem like normal behavior. I would have thought sleep
>>>> mode, induced from closing the lid, would have been a power hibernation.
>>>>
>>>> It normally sits closed on my desk, running 2 27" displays, never
>>>> anything than barely noticeably warm.
>>>
>>> How sure are you that it's actually going to sleep when you lose the
>>> lid. Have you watched it to see?
>>>
>> One has always assumed that closing the lid induced sleep mode. The
>> Apple logo is not lit, but that of course is not an indicator, the MBP
>> is running and drawing a desktop on two displays, and the lid logo is
>> unlit, lid closed
>
> If it is driving external displays, then it probably does *NOT* go to
> sleep when you close the lid. That particular detail has changed from
> model to model; I seem to recall some older Mac laptops that could not
> operate that way with the lid closed. But for the most part, I'd expect
> an MBP pro to stay awake when you closed the lid if external displays
> were connected. There is no particular reason why closing the lid should
> necessarily cause sleep mode in that case. I bet some of the other
> posters skipped over the "external displays" part; I did at first
> glance, but it is probably pretty relevant.
>
> When you close the lid, do the external displays immediately go off (or
> at least in their "no data being recieved" mode, which usually causes
> most modern displays to power down soon thereafter)? If they stay on and
> displaying normally for even a brief while, then your laptop has not
> gone to sleep. Eventually, you might get the display sleep mode, but
> that takes longer. If the lid closure triggers system sleep, that should
> be pretty quick.
>
> If this is your issue, then it is not a problem with your system - just
> with your expectations. I'm not sure it is what is happening, but I'm
> sure suspicious.
>



Under normal operation, my MBP is run lid closed, and the connected 
displays active. So sleep mode ( or now power nap ) is not mandated by 
the lid being closed per se.

In the situation of the displays not being connected, and the act of 
closing the lid, the expectation was there that sleep/power nap would be 
invoked; the lid light is out, the screen is presumptively blank ( 
Shroedinger's cat etc.). But that is now obliviously overridden by the 
Energy Saving settings


More combinations than there used to be. I get it may be my 
misinterpretation of what should be happening, and it may be a product 
of ( as other post) the energy saver sleep settings being set = never. 
But, a combination exists where the heat ramped up substantially, and 
that  is perhaps the bottom line, there arguably should have been a trap 
somewhere to stop the heat generation, despite whatever I as the user 
may do to the configurable settings and in the normal practice of 
closing a lid ( with or without inducing sleep).

The user ( myself included) does not always follow the path of best safe 
practice, clearly ; but it does seem on reflection, there is a potential 
hole in the safety profile.

I think the take home, is that sleep is not guaranteed by closing the 
lid. A false assumption to think it is/would be.  Whether that ( close 
overrides all) is a reasonable expectation or not, is another issue. 
Probably was valid back in times of simpler combinations (PB1400 et 
all), or maybe not.

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Thread

Hot MacBookPro Retina qubit <qubit@quandoveloce.com> - 2012-08-23 00:27 +0930
  Re: Hot MacBookPro Retina Jolly Roger <jollyroger@pobox.com> - 2012-08-22 08:09 -0700
    Re: Hot MacBookPro Retina nospam <nospam@nospam.invalid> - 2012-08-22 08:19 -0700
    Re: Hot MacBookPro Retina qubit <qubit@quandoveloce.com> - 2012-08-23 08:57 +0930
      Re: Hot MacBookPro Retina nospam@see.signature (Richard Maine) - 2012-08-22 17:17 -0700
        Re: Hot MacBookPro Retina qubit <qubit@quandoveloce.com> - 2012-08-23 10:44 +0930
  Re: Hot MacBookPro Retina YourName@YourISP.com (Your Name) - 2012-08-23 09:10 +1200
    Re: Hot MacBookPro Retina nospam <nospam@nospam.invalid> - 2012-08-22 16:05 -0700
      Re: Hot MacBookPro Retina John McWilliams <jpmcw@comcast.net> - 2012-08-22 16:32 -0700
        Re: Hot MacBookPro Retina nospam <nospam@nospam.invalid> - 2012-08-22 17:08 -0700
    Re: Hot MacBookPro Retina Lewis <g.kreme@gmail.com.dontsendmecopies> - 2012-08-23 08:14 +0000
      Re: Hot MacBookPro Retina YourName@YourISP.com (Your Name) - 2012-08-24 08:57 +1200
        Re: Hot MacBookPro Retina Lewis <g.kreme@gmail.com.dontsendmecopies> - 2012-08-23 22:03 +0000
          Re: Hot MacBookPro Retina YourName@YourISP.com (Your Name) - 2012-08-24 13:26 +1200
  Re: Hot MacBookPro Retina Ed Anson <EdAnson@comcast.net> - 2012-08-22 18:45 -0400
    Re: Hot MacBookPro Retina John McWilliams <jpmcw@comcast.net> - 2012-08-22 16:09 -0700
    Re: Hot MacBookPro Retina qubit <qubit@quandoveloce.com> - 2012-08-23 09:35 +0930
      Re: Hot MacBookPro Retina JF Mezei <jfmezei.spamnot@vaxination.ca> - 2012-08-22 23:37 -0400
  Re: Hot MacBookPro Retina YourName@YourISP.com (Your Name) - 2012-08-26 16:32 +1200
    Re: Hot MacBookPro Retina qubit <qubit@quandoveloce.com> - 2012-08-31 09:13 +0930

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