MarkP0902
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Q: Resolution Wrong on VGA monitor when waking from sleep, since updating to OS X Mountain Lion 10.8.3

I have a 2009 model MacBook Pro 13" that I have hooked up to an external 21" HANNspree monitor via Apple's mini-display to VGA adaptor. I have never had a problem with this with Lion or Mountain Lion. But this week, I did the update to OS X Mountain Lion 10.8.3 and now every time I wake the Mac from sleep while connected to the moitor, the monitor's display is completley wrong - resolution is incorrect, icons and menu bar are gigantic and don't fit the screen, dock is a little too big too and fuzzy, and when I go into display settings, I see that the settings are generic an OS X is not recognizing the specific monitor at all. To resolve this, I have to either open up the laptop, let its screen come on, and then close it, or else unplug the monitor from the Mac and plug it back in - after doing one of these two things, then the resolution is normal and the Mac recognizes my particular monitor and has the correct settings. While this is not a crippling problem because there is a workaround, it's still excessivley aggravating and unnaceptable for a major update to an OS for an expensive brand of computer. I have heard that others are having this problem too. Does anyone know if there is any way to fix this?

MacBook Pro, OS X Mountain Lion (10.8.3), 2009 model, 8GB RAM

Posted on Mar 24, 2013 5:35 AM

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MarkP0902

Q: Resolution Wrong on VGA monitor when waking from sleep, since updating to OS X Mountain Lion 10.8.3

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  • by bastc,

    bastc bastc Apr 3, 2013 6:14 AM in response to MarkP0902
    Level 1 (0 points)
    Apr 3, 2013 6:14 AM in response to MarkP0902

    I have the same problem. Resetting  the PRAM did not help. It was never a problem before, when I was using 10.6.

     

    MacBookPro (2009) 2.53 GHz, Intel Core 2 Duo, 8GB 1067 MHz DDR3 RAM connected to a VGA Flatron W2242PM screen.

     

    Similar problem: https://discussions.apple.com/thread/4896422?start=0&tstart=0

  • by Eric Root,

    Eric Root Eric Root Apr 3, 2013 2:34 PM in response to MarkP0902
    Level 9 (74,186 points)
    iTunes
    Apr 3, 2013 2:34 PM in response to MarkP0902

    Apple support article:

     

    Video Troubleshooting Internal and External Monitors

     

    One thing suggested besides a PRAM reset is an SMC reset.

     

    Reset SMC

  • by bastc,

    bastc bastc Apr 4, 2013 4:41 AM in response to Eric Root
    Level 1 (0 points)
    Apr 4, 2013 4:41 AM in response to Eric Root

    Thank you for the suggestion, but the problem persist after SMC reset.

  • by MarkP0902,

    MarkP0902 MarkP0902 May 23, 2013 7:12 PM in response to MarkP0902
    Level 1 (0 points)
    May 23, 2013 7:12 PM in response to MarkP0902

    Has anyone made any headway on this? This problem has been going on for about 2 months now, I'm tired of it! Wondering if anyone has figured out a solution. I have asked the Apple store many times and they continue to deny that this is a common problem and claim they have never heard of this.

  • by MarkP0902,

    MarkP0902 MarkP0902 Jun 7, 2013 11:36 AM in response to MarkP0902
    Level 1 (0 points)
    Jun 7, 2013 11:36 AM in response to MarkP0902

    Update: I have now updated the MacBook Pro to Mac OS X 10.8.4, and had really high hopes that this would fix the problem.... unfortunately it did not make a difference....... I'm wondering if I should try changing the Mini-Display to VGA adaptor, although I have heard some people say that this does nothing either. I'm lost. Any ideas?

  • by MarkP0902,

    MarkP0902 MarkP0902 Jun 8, 2013 6:53 AM in response to MarkP0902
    Level 1 (0 points)
    Jun 8, 2013 6:53 AM in response to MarkP0902

    I tried resetting the NVRAM (PRAM), and nothing was fixed.

  • by MarkP0902,

    MarkP0902 MarkP0902 Jun 9, 2013 2:08 PM in response to MarkP0902
    Level 1 (0 points)
    Jun 9, 2013 2:08 PM in response to MarkP0902

    I did find a "compromise workaround" - find a resolution setting that is compatible with both your monitor, and the generic VGA monitor settings for the Mac..... the reason why the problem happens is because sometimes when the Mac wakes up from sleep, it does not remember your particular monitor, and goes to the settings for a generic VGA Monitor......

     

    While this does not truly fix the problem, it makes for a half-descent workaround. Sadly, the resolution that I had my monitor set at was not available for the generic VGA monitor resolution settings, so I had to go higher, leading to smaller screen images and more eye squinting - however, on the plus side, I now can fit more stuff on my screen!

     

    Now, regardless of whether or not the problem occurs when I wake the Mac up from sleep, my resolution settings are the same.... just not the resolution that I really want.

  • by MarkP0902,

    MarkP0902 MarkP0902 Jun 9, 2013 2:48 PM in response to MarkP0902
    Level 1 (0 points)
    Jun 9, 2013 2:48 PM in response to MarkP0902

    Oh, and, someone on another discussion board asked me how to do this, the answer that I posted to that person is this:

     

    The next time the problem happens, go into System Preferences, then go into Displays, then change "Resolution" form "Best For Display" to "Scaled." Then chose the appropriate resoultion setting. Make sure it's one that works when the computer is correctly recognizing your Moinitor too. Then, put the Mac to sleep manually, and wake it up, and if the Mac recoginizes your Monitor, then change the resolution settings there to match the Generic VGA settings that you set when your Mac was not recognizing the particular VGA Monitor.

     

    In my case, 1920x1080 at 60hz worked for both my monitor and the generic VGA monitor settings.

  • by HollandJohn,

    HollandJohn HollandJohn Jun 18, 2013 8:26 PM in response to MarkP0902
    Level 1 (0 points)
    Jun 18, 2013 8:26 PM in response to MarkP0902

    Yeah, I have this happening daily on my 2012 Macbook Pro with hi res screen (not retina).  Happens in two client locations, with a 22 and a 24 inch monitor, using mini-display to VGA adapter.  I've learned to just hit ESC, let it go back to sleep, then wake with the shift key.  I do this 2 to 4 times until the resolution looks right, then I log in.

     

    Its a pain, because once I login all my windows are half the height they were since the Mac was in the wrong resolution whether I logged back in or not. No biggie except I usually have have 10-15 apps/windows open, its laborious to reset everything.

     

    Yes, I did the different resets as explained in articles going back 2+ years.  No improvement.  Dont' feel like lugging an external monitor into the apple store...

  • by Claire Fitch,

    Claire Fitch Claire Fitch Aug 2, 2013 4:38 PM in response to HollandJohn
    Level 1 (30 points)
    Aug 2, 2013 4:38 PM in response to HollandJohn

    interesting.

     

     

    I came over to apple support looking for an answer to this issue and see it's not really resolved.

     

     

     

    Have recently switched to 10.8.4 from 10.7 on a macbook pro retina 2012.  

     

    I have been using a Thunderbolt to VGA adapter to connect the mac to classroom projectors with no problem, but since the update to 10.8 the connection has been very flakey. 

     

    Either the mac is not registering with the projector, or I have to alter the settings after the mac has been asleep, unplugging the adapter a couple of times, and then maybe it might decide to work.

     

     

    I was going to try a HDMI to VGA to see if it made a difference, but now see it's more likely an OS bug. 

     

     

    Has apple given any hint they will fix this? ... it's really something I need to work,  rather than having to change settings everytime I have to hook up to a projector and use Keynote.

  • by aringa9,

    aringa9 aringa9 Nov 8, 2013 6:53 AM in response to Claire Fitch
    Level 1 (0 points)
    Nov 8, 2013 6:53 AM in response to Claire Fitch

    I'm exatly in the same situation like TWhunter74.

    My guess is that apple ceased to support the Quato monitors as the company stopped operating.

     

    But what a strange thing that it's impossible to set the screen resolution manually.

  • by BBest15,

    BBest15 BBest15 Nov 11, 2013 11:25 AM in response to MarkP0902
    Level 1 (0 points)
    Nov 11, 2013 11:25 AM in response to MarkP0902

    OSX 10.9 and this bug is still alive and well.

     

    I am using an HP w2408h monitor with a "Best for Display" setting of 1920x1200, it works fine.

     

    When my Mac Mini goes to sleep and wakes back up the setting is 1600x1000 and 1920x1200 is no longer an option.

     

    If I restart the machine it comes back up in 1920x1200 mode and works fine again.

  • by bill_mccloskey,

    bill_mccloskey bill_mccloskey Nov 20, 2013 2:38 PM in response to MarkP0902
    Level 1 (0 points)
    Nov 20, 2013 2:38 PM in response to MarkP0902

    The free tool, Display Menu, may help out with quick switches between various resolutions on laptop and external displays - I kick this tool off in my login.  I find myself using it alot for quick resolution changes on my 15" retina display, and have found other uses.  Sounds like the original poster and perhaps a few follow-ons could use this tool as at least a work-around for the VGA reset issues.

  • by NickFury,

    NickFury NickFury Dec 23, 2013 6:23 AM in response to MarkP0902
    Level 1 (0 points)
    Dec 23, 2013 6:23 AM in response to MarkP0902

    I've been having the same problem - very frustrating. I just installed Display Menu as bill_mcclosky suggested. It did not display the desired resolution as an option as I had hoped. However, I selected "Detect Displays" from the pull-down and it fixed everything. The resolution on my secondary monitor is now correct and it is correctly identified, rather than "VGA Display". Good utility. Thanks, Bill.

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