Q: Mackbook pro 2012 in closed-clamshell bugs periodically, reducing color bitrate on the external eizo screen! But, if I let im open, that bug never happens!

Hi everybody.

When I'm working on my MacBook Pro mid 2012, with Mavericks OS 10.9.5, in a closed-clamshell setup, I got color rendition bugs all the time. Those bugs reduce the color bit rate, making it impossible to work! But, if I'm using it almost closed with the luminosity dimmed to of, everything runs fine, all the time!

Somebody have suggestions?

(I'm connected via thunderbolt port, with a Thunderbolt---->DVi converter.

Thank you.

Bruno

MacBook Pro, OS X Mavericks (10.9.5), null

Posted on Mar 10, 2015 8:31 AM

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Q: Mackbook pro 2012 in closed-clamshell bugs periodically, reducing color bitrate on the external eizo screen! But, if I let im open ... more

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by joe_7399,

joe_7399 Mar 12, 2015 6:16 AM in response to Bruno Inácio
Community Specialists

Mar 12, 2015 6:16 AM in response to Bruno Inácio

Hi Bruno Inácio,

Welcome to the Apple Support Communities!

I understand that while connected to an external monitor, with a closed MacBook lid, the display on your external monitor has random color anomalies. In this situation, I would recommend checking your connections, resetting the system, and resetting the resolution. These steps can be found in the attached article.

Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support

Best regards,
Joe
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Q: Mackbook pro 2012 in closed-clamshell bugs periodically, reducing color bitrate on the external eizo screen! But, if I let im open, that bug never happens!

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