Horrible colors on external monitor using macbook air(2012) with mini dp to hdmi

I have exactly the same problem:

Laptop: MacBook Pro 13", Mid 2012

External Monitor: Samsung SyncMaster SA550 (HDMI input)

Mini DisplayPort to HDMI Adapter: Moshi Mini DP to HDMI Adapter with Audio Support (H1824ZM in the Apple Store)

Colors are generally washed out, very low contrast, very high brightness, some fonts are distorted.

This might be the reason... https://discussions.apple.com/thread/4069714

I was pulling my hair out until I found that. I never knew that Control-Option-Command-Period had that function!

I have the same problem, did you manage to fix it?

I hope its a software related problem. I also exported same color profile i use on other mac on same display and colors are totally off in new mba. :S

Same here. Checked with my Samsung Syncmaster 27" and an older Philipps 37" TV.

Color, fonts, nearly everything looks like crap on external devices.

However I'm using this adapter http://www.amazon.de/gp/product/B003ORJOX0/ref=oh_details_o01_s00_i00 and this one might cause the trouble, I don't know. I'll try to check another adapter and another cable and will report back then.

Same here.

MBA 13" i7. Moshi HDMI adapter.

Samsung syncmaster t240 (24"). Colors are horrible. Tried calibrating with the expert mode. It feels almost as before, expect some colors and specific places comes off realy bad. Like the casted shadows from a window to another if terribly rendered.

You are not alone !

Same here: mid-2012 MBA 120G/8G RAM

WhenI connect my Air to external BenQ 24" HD screen [GL2440 HD] with Apple HDMI cable - picture quality is poor (being kind here) but when connected using DVI cable, picture is crisp - NO comparison in picture quality - HDMI image quality ex Air is garbage. Text is soft/fuzzy and colours washed out, colour profiles make minimal to nil difference to picture quality. Swapped to DVI cable and image is HD crisp and colours spot on.

Firmware issue re HDMI calibration perhaps?

I have also noticed problem when logging into from locked screensaver option that wallpaper dissapears on external display over hdmi always. Its just grey, even if i change the wallpaper over change desktop wallpaper it remains grey until i reconnect hdmi...

+1

Laptop: MacBook Pro 11", Mid 2012 128Gb/8Gb

External Monitor: Samsung SyncMaster T260 (HDMI input)

Generic Mini DisplayPort to HDMI Adapter that came with ATI graphics card I have in my PC

Yup, I also have the same problem. So glad I found this post! Was searching a fews days back to see if others had similar issues and found nothing. Slightly schadenfreude, but I'm glad this is happening across a range of monitors. Definitely implies and internal calibration issue......

MacBook Air 13", Mid 2012, Core i7

External monitor: BenQ VW 2420h

The problem is particularly bad with whites and greys - in gmail for example with the standard theme it is impossible to discern the greys of the read and undread messages, nor the action buttons across the top.

Tried the apple calibration tool that helped a slightly, but in no way solved the problem. Also tried various other online calibration tools. No good.

My monitor worked fine and looked stunning on my old mid 2009 15inch MacBook pro. Simply plugged it in and bang, perfect image with the standard calibration settings.

Going in to the Apple store nect week to dusciss a separate issue, so will raise this issue and show them this thread and see what advice, if any, they can offer. If it can't be resolved somehow.

I'll report back what they say.