Resolution Lowered When Waking Up in 10.8.3?

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Level 1

15 points

Resolution Lowered When Waking Up in 10.8.3?

Hi!

I'm wondering if anyone has seen an issue with their Mac when it wakes up from idle/sleep in 10.8.3. For the past couple days, when I wake my Mac mini up from idle or sleep, it drops the resolution down and the only thing that resolves the issue is a reboot. However, as soon as it goes back to idle or sleep, it happens again. The only change I've made since installing 10.8.3 is pairing a Magic Trackpad to my Mac.

Any assistance would be most welcome. Thanks!

Mac mini, OS X Mountain Lion (10.8.3)

Posted on Mar 17, 2013 1:57 PM

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Answer 1

Best reply

Eric Root

Level 10

684,027 points

Mar 17, 2013 2:09 PM in response to Fiztaru

Apple support article.

Video Troubleshooting Internal and External Monitors

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Answer 2

Mar 17, 2013 6:11 PM in response to Eric Root

Resetting the PRAM should do the trick. Give that a try,

Message was edited by: DJNephilim

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Answer 3

Fiztaru Author

Level 1

15 points

Mar 17, 2013 8:27 PM in response to DJNephilim

Just tried resetting the PRAM. After rebooting, I immediately put it to Sleep, then woke it up, and the resolution didn't change. I let it go into idle, then woke it back up, but the resolution dropped back down again.

It was originally set to 'Best for Display', but when I reset the PRAM I set it to 1280x1024. After idle it dropped down to 800x600.

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Answer 4

Fiztaru Author

Level 1

15 points

Mar 17, 2013 9:06 PM in response to DJNephilim

Seems to be behaving now after I set it back to 1280x1024 manually. I've done a couple of idle/Sleep + wakeup cycles and screen resolution's been unchanged. Thanks!

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Answer 5

keewawa

Level 1

6 points

Mar 31, 2013 7:32 AM in response to Fiztaru

Still having this problem even after resetting the PRAM~ So frustrating with 10.8,3!

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Answer 6

bastc

Level 1

0 points

Apr 3, 2013 4:43 AM in response to keewawa

I also have this problem after resetting PRAM. I 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.

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Answer 7

keewawa

Level 1

6 points

Apr 11, 2013 4:18 AM in response to bastc

This is really annoying! Every time it happens, have to sleep/wake the display several times to get it working properly.

Even with 10.8.2 this problem didn't exist! Guess have to wait to see if they are gonna solve it by 10.8.4!

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Answer 8

bastc

Level 1

0 points

Apr 11, 2013 4:33 AM in response to keewawa

It is very annoying, but in my case I can unplug the mini displayport cable form my laptop, wait 2 seconds and plug it back, and then it works.

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Answer 9

keewawa

Level 1

6 points

Apr 11, 2013 4:37 AM in response to bastc

True! That's also what I did to my Mini, but occasionally that failed, then repeated couple of times would do.

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Answer 10

Viper320

Level 1

5 points

Apr 11, 2013 3:35 PM in response to Fiztaru

My Macbook Pro no longer wakes from sleep after updating to 10.8.3 from 10.8.2. I will try resetting my NVRAM to see if that fixes the problem.

Is there any way to downgrade from 10.8.3 back to 10.8.2?

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Answer 11

keewawa

Level 1

6 points

Apr 11, 2013 3:57 PM in response to Viper320

You cannot simply downgrade from higher version to lower ones.

Guess you will have to reinstall the system with a version lower than 10.8.2 (upgrade afterwords) or just right 10.8.2 to do the trick.

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Answer 12

drans208

Level 1

4 points

Apr 21, 2013 9:27 PM in response to keewawa

Same problem for me!

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Answer 13

May 2, 2013 2:05 AM in response to Fiztaru

Same here but different resolution.

I have a hdmi->dvi on my macmini.

Connected to a 24' 1920*1200.

When it wakes from long sleep period it gets 640*480 or something. Even if I set the display to "best for display" it gets 1920*1080 (doesnt even show full resolution in settings)

I have to log in (after wake), set to sleep again, and wake again right after "no signal, monitor going to sleep" to get full resolution back.

This problem came with 10.8.3

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Answer 14

Jun 9, 2013 2:24 PM in response to Fiztaru

Resetting NVRAM (PRAM) did not help for me either.

Essentially, sometimes the Mac does not recognize the particular monitor when it wakes from sleep, but rather only recongizes that some sort of VGA Monitor is there, and goes to generic VGA Monitor Settings.

I found a workaround (but not a true fix) to this problem. It doesn't truly fix the probelm, but it makes it livable.

See my post on Apple Discussion boards: https://discussions.apple.com/thread/4913680?answerId=22194581022#22194581022

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Answer 15

keewawa

Level 1

6 points

Jun 9, 2013 2:42 PM in response to MarkP0902

Nope, Resetting NVRAM doesn't help! And this is still not fixed with 10.8.4.

I don't quite know how to 'find a resolution setting that is compatible with both your monitor, and the generic VGA monitor settings for the Mac', could you please be more specific? Thanks a lot!

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