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  • weeasle Level 1 Level 1 (0 points)

    Hi Asengskie,

     

    You will find Power Nap (if it is enabled) in the Energy Saver applet in System Preferences.  You can see more info and a screenshot here:

    http://support.apple.com/kb/HT5394

     

    Please note that only certain models of macbook support powernap and for some a recently released firmware update is required.

    You can find links here:

    http://www.macobserver.com/tmo/article/apple-updates-firmware-for-macbook-pro-ai r-retina

     

    However, I advise caution that it may be better not to update until we here in this forum establish if the SMC update is improving battery life for certsin models or making it worse.

     

    Also before updating Firmware it is advisable to first try resetting your SMC - http://support.apple.com/kb/HT3964

    and then running the Battery Calibration Procedure I outlined in my previous post - also at - http://support.apple.com/kb/HT1490

     

    Also on point 3 of the procedure I outlined - Apple is recommending leaving unplugged in the fully drained state for minimum 5 hours (not the 2 hrs I mentioned)

     

    After running the calibration, please run a full cycle (from 100% to sleep/shutdown) and report back here with your runtime - this will help us inform Apple of the true nature and impact of the bug/s..

     

    You would probably be best off trying the above before SMC Firmware update as it is a non-reversable process and if you find the new SMC firmware made things worse then there is no way to downgrade... Also if you do go ahead be sure to read all Apple docs carefully..

     

    Please report back how you went and if possible include Make/model, SMC Firmware version, upgrade method and full-cycle runtime - See RHBC's post for an example of what info is helpful.

     

    Thanks,

     

    Wezley

     

    Ps. Hoping if enough of us report this info here and send the summaries to:  bugreporter.apple.com. then a fix might come faster from Apple

  • richsadams Level 1 Level 1 (70 points)

    Sulaiman.K wrote:

     

    @ richsadams How long could you use your MacBook Air in real time when it's on full charged?

     

    Mine after updating to Combo version (on my other MBP it has improved) nothing improved but at the first after the installation it has worked normally, I think i should take MBP to Apple Store before it's too late.

     

    Could you please confirm that the clean install does fixes this issue? – I'm little bit confused and i heard some users are saying that after clean installation nothing has improved with their battery life

     

    Thanks.

     

    Per my earlier posts, yes a clean install did get my MacBook Air back to and actually a little above spec.  The spec is 5 hours and I've charged it twice since the install and now it's good for about 5.5 hours sometimes a little more depending on what I'm doing.  It's still not as good as with Lion where I could easily get 6 hours or more, but much better than the 3, maybe 4 hours it was getting before 10.8.2.

     

    Rather than a Time Machine restoration I also performed a "manual" restore, re-downloading all of my apps and restoring individual files from Time Machine.  That ensured that everything was "new".

     

    The clean install of 10.8.2 did help a number of folks here, but not some others, so no guarantees.  If all else fails it's certainly worth a try.

     

    How to Clean Install OS X Mountain Lion

     

    Be sure to back up first!

  • asengskie Level 1 Level 1 (0 points)

    thank you very much Wezley for all the explanation i already in 10.8.2 and experiencing worst of my battery life and i already do the SMC reset and i also do the PRAM but it seems nothing happens... later i will try the procedure for calibration and see if what will happen..

     

    yes i will read this all first after updating my SMC..

     

     

    thank you very much =)

  • richsadams Level 1 Level 1 (70 points)

    weeasle wrote:

     

    Also I noticed after the upgrade power nap didnt show in my energy saver area in sys preferences. Richsadams mentioned the SMC firware gets updated during the upgrade but I suspect this only happens for certain models and the late 2010 MBA is only upgraded through the recently released 1.7 firmware update.

     

    I will confirm my SMC firmware version and observe the battery life with my current firmware rev. and report back here within the next few days.

     

    Thanks,

     

    weeasle

     

    However, I advise caution that it may be better not to update until we here in this forum establish if the SMC update is improving battery life for certsin models or making it worse.


    Please be monitoring this thread Apple devs in high up places.. Please... (fingers crossed). I guess we should be filling out bug reports -  I will report back here in a few days my results. I am going to be as methodical as possible.

     

    Depending on how you upgrade, SMC 1.6 or 1.7 may or may not have been part of the package.  If you don't have Power Nap, your SMC wasn't updated. 

     

    I have the 11" Late 2010 MacBook Air.  The SMC (which includes Power Nap) is 1.67f6.

     

    The latest SMC update that coincided with the public release of 10.8.2 did in fact improve or at minimum stabilize battery life for many folks here.

     

    Apple has been monitoring this thread and reached out to a number of us (including yours truly) early on, had us install diagnostic programs, etc. so they are painfully aware of the situation.  Improvements have certainly been gained with 10.8.2 but it's still not perfect for all so I would expect future updates to continue to improve things.

     

    (Understand that it's difficult to go back through all of the posts, but there are numerous confirmations.) 

  • jerryx2000 Level 1 Level 1 (0 points)

    I downgraded to 10.7.5 & am happy again.

  • weeasle Level 1 Level 1 (0 points)

    Wow thats Synchronicity!

     

    I was just rereading your earlier posts and was about to reply asking your MBA screen size and SMC firmware rev..

     

    Your post is the thread of hope for me because I read the Mac Observer report and felt hopeful the battery life issues many reported with Lion and earlier ML had been resolved.

     

    I am hoping that a few of us here such as yourself who report methodically and collate the info may glean an insight into the issue which still seems ongoing and affecting many different models of Macbook right up to latest 2012 models.  In your post discussing with another user hardware was mentioned as a possible culprit but I have a hard time believing hardware to be the issue when many were happy and getting close to rated battery life using Snow Leopard (at least that is the impression I have formed reading the 160+ pages of this rapidly and frequently updated thread)

     

    I hope one some of us here are armed with these insight gained from methodical testing and sharing of the results we can make concerted well informed reports at bugreporter.apple.com. to assist Apple in delivering us a stable and well performing Mountain Lion..

     

    Thanks for the info - it is starting to confirm a suspicion I have and I will be holding off SMC firmware updating until I have runs some tests on my own late 2010 MBA 13" and report back here before filing bug report and then at that stage if we have identified something repeatable we can bug report en masse.

     

    Best,

     

    Wezley

  • weeasle Level 1 Level 1 (0 points)

    Sorry got exited and missed a couple important points when reading your post.

     

    It is interesting and confusing that a 1.6x version contains the powernap feature support..  I was under the impression 1.7x was needed as this is the badge on the recently released update. Anyhow, good to know.

     

    Thanks for sharing that Apple is monitoring this and that you have been connected well high-up with Apple Devs. 

     

    I will methodically test on my current SMC Firmware and report results of a full cycle to see if collectively we can identify root cause/s

     

    Thanks again,

     

    Wezley

  • richsadams Level 1 Level 1 (70 points)

    weeasle wrote:

     

    Wow thats Synchronicity!

     

    I was just rereading your earlier posts and was about to reply asking your MBA screen size and SMC firmware rev..

     

    Your post is the thread of hope for me because I read the Mac Observer report and felt hopeful the battery life issues many reported with Lion and earlier ML had been resolved.

     

    I am hoping that a few of us here such as yourself who report methodically and collate the info may glean an insight into the issue which still seems ongoing and affecting many different models of Macbook right up to latest 2012 models.  In your post discussing with another user hardware was mentioned as a possible culprit but I have a hard time believing hardware to be the issue when many were happy and getting close to rated battery life using Snow Leopard (at least that is the impression I have formed reading the 160+ pages of this rapidly and frequently updated thread)

     

    I hope one some of us here are armed with these insight gained from methodical testing and sharing of the results we can make concerted well informed reports at bugreporter.apple.com. to assist Apple in delivering us a stable and well performing Mountain Lion..

     

    Thanks for the info - it is starting to confirm a suspicion I have and I will be holding off SMC firmware updating until I have runs some tests on my own late 2010 MBA 13" and report back here before filing bug report and then at that stage if we have identified something repeatable we can bug report en masse.

     

    Best,

     

    Wezley

     

    Hi Wezley,

     

    Many of us here have been working on this both directly with Apple and between ourselves since 10.8 dropped July 25th.  So with all due respect, everything you've discussed/posted has been covered before.  I know it's tough being late to the party. 

     

    That said, compiling information and filing bug reports never hurts.

     

    Best of luck and let us know how it goes!

  • weeasle Level 1 Level 1 (0 points)

    Also one last thought I had was that for people trying the clean install route after exhausting the other suggestions in this thread, it is worth pointing out that to be truly methodical in testing, a full battery power cycle should be run and recorded before restoring time machine backups and/or reinstalling any software.

     

    My two leading suspects would be either SMC glitch or rogue background processes induced by third party software interacting with ML in some way.

     

    If people notice rated/good battery life after fresh install and then notice a drastic decrease after software re-install this might help us get closer to root cause as there are certain software many of us run commonly that could be the cause..

     

    Just some thoughts..

     

    Wezley

  • richsadams Level 1 Level 1 (70 points)

    weeasle wrote:

     

    Sorry got exited and missed a couple important points when reading your post.

     

    It is interesting and confusing that a 1.6x version contains the powernap feature support..  I was under the impression 1.7x was needed as this is the badge on the recently released update. Anyhow, good to know.

     

    Thanks for sharing that Apple is monitoring this and that you have been connected well high-up with Apple Devs. 

     

    I will methodically test on my current SMC Firmware and report results of a full cycle to see if collectively we can identify root cause/s

     

    Thanks again,

     

    Wezley

     

    SMC 1.5 through 1.7 include the Power Nap feature.  The versions aren't numerically progressive either...a 2012 MacBook can have a version of SMC 1.5 while a 2010 MacBook may have a version of SMC 1.7.  The version installed depends on the actual model of MacBook is all.

  • weeasle Level 1 Level 1 (0 points)

    +1  for this advise - I will keep in mind if I go the clean install route not letting time machine wholus-bolus re-import and selecting individual files to restore and freshly inalling apps.  It makes a lot of sense that some previous system files lingering could be our culprit..

     

    Signing-off for now - will report back my experiences later..

     

    Thanks again,

     

    Wezley

  • taweeskk Level 1 Level 1 (0 points)

    Dear All,

    After updated by 10.8.2, my MBP early 2011 running over 6 hrs from one charge. Might be close to 7 hrs battery life (down to less than 10% remaining). Quite happy, indeed. It's enough for one day out-off-office work. Comparing to the previous Lion which can be enough for almost 10 hrs. or almost 2 days outside. Don't worry about the remaining  hour reading.  It's up and down every minute. Especially during the last 25% level, it can say between 1 - 2 hrs  up and down all the time. Keep on working normally and don't worry about it. If it going to completely drain, we still have time to save our work. Actually Apple automatically save our work very rapidly. So for the time being, I think we should settll down and let Apple engineer to work on the issue. Keep fingers cross. Good luck for all the Apple Fans.

  • asengskie Level 1 Level 1 (0 points)

    hi, just to want to ask how i can check the version of my SMC my laptop is

     

    MacBook Pro

    13-inch, Mid 2012

    Processor  2.9 GHz Intel Core i7

    Memory  8 GB 1600 MHz DDR3

    Graphics  Intel HD Graphics 4000 512 MB

    Software  OS X 10.8.2 (12C54)

     

    i couldn't find the POWER NAP in ENERGY SAVER only 2 box is there

     

    - put hardisk to sleep when possible

    -slightly dim the display while on battery power

  • taweeskk Level 1 Level 1 (0 points)

    Dear asengskie, I don't think your machine support "power nap" because it run on harddrive, not a flash base.

  • asengskie Level 1 Level 1 (0 points)

    ah because it says in the power nap description that it supports also the macbook pro mid 2012?? =(