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FlimFlam808
1 Copper

U2410 & Thunderbolt Issues

Hi,

15" MacBook Pro, Early 2011

Lion 10.7.2

Dell U2410 REV 5

I've owned the U2410 for about 2 weeks now and I still can not figure out what is up with connection issues to the MacBook Pro.

Apple's official Mini DisplayPort-to-DVI adapter & Dell's included DVI cable:

- The monitor never enters Power Saver mode. Instead, the picture disappears but the backlight remains on

- The monitor successfully displays in RGB mode

Mini DisplayPort-to-DisplayPort cable:

- The monitor believes the signal is an HDTV and refuses to be set to RGB mode. It will only display in YPbPr

- The monitor, however, successfully enters Power Saver mode

I've tried shutting off the "Put hard disks to sleep" option; I've tried disabling "Automatic graphics switching"...Nothing seems to work.

I believe the problem has to do with the Thunderbolt/DisplayPort. I do not have these issues on my older white MacBook using a MiniDVI-to-DVI adapter.

Is Dell aware of these issues? Working on them? This is a common problem for most users with a Thunderbolt port and attempting to use the U2410. But there remains a lot of confusion as to what the problem is and whether or not steps are being taken to alleviate it?

Thank you,

-Yah

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35 Replies
Moderator
Moderator

Re: U2410 & Thunderbolt Issues

Dell only validates the standard Mini-DP to DP adapter on Windows PCs. We do not test the apple mini-DP to DVI adapter nor do we test Dell monitors with apple platforms. You should check the apple Discussions Forum for help from other apple users with our products.

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FlimFlam808
1 Copper

Re: U2410 & Thunderbolt Issues

Well that's ridiculous. You would test the literally thousands of different PC configurations but not the handful of models Apple puts out annually? Makes absolutely no sense. Especially considering the U2410 and other high-end IPS monitors are popular among the professional sectors, whom almost exclusively have used Apple platforms for decades.

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joseph-jb7
1 Nickel

Re: U2410 & Thunderbolt Issues

It is ridiculous. It worked with my last macbook pro, but it isn't recognizing the signal from my 2011 model.

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joseph-jb7
1 Nickel

Re: U2410 & Thunderbolt Issues

ok, put it another way- is the HDMI input for the U2410 designed to accept only HDTV input signal?

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Moderator
Moderator

Re: U2410 & Thunderbolt Issues

is the HDMI input for the U2410 designed to accept only HDTV input signal?

* No, When I take a Dell Laptop which has a video card with HDMI out and plug a standard HDMI to HDMI cable into it and the U2410 HDMI in, it all works.

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joseph-jb7
1 Nickel

Re: U2410 & Thunderbolt Issues

Thanks. Since the signal outputted by the video card is the same as DVI, should I conclude that the HDMI port on my monitor is not functioning? The monitor gives the message 'no HDMI cable attached'. And it is.

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Moderator
Moderator

Re: U2410 & Thunderbolt Issues

Maybe, but I doubt it. Is there a Windows PC around to test the monitor DVI port?

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joseph-jb7
1 Nickel

Re: U2410 & Thunderbolt Issues

no, unfortunately, I don't have any access to windows machines at all-

though I suppose I could install it on my mac.

Kinda defeats the purpose though...

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joseph-jb7
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Re: U2410 & Thunderbolt Issues

so I changed the cable, and now the signal is getting through-

However, another problem-

I can only get an approximation of good color in yPbPr- and it's not good colour at  all-

However, RGB produces wildly mad colour.

Seems the HDMi port expects to receive tv signals...

Next step is to get a Mini DP to DP adapter, and see if that works...

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