Solved: How do I set resolution of HP 27vc 27-inch monitor to EXACTL... - HP Support Community

jduesenb · ‎02-08-2016

I have just setup an HP 27vc 27 monitor to a Mac (running OSX 10.10). It works pretty well, but for optimal visuals I need the best resolution supported, which (HP claims) is 1920 x 1080. This option isn't even available in the Mac OS Displays Preferences, or in any option I can find on the monitor itself.

I have an older HP Pavilion 27xi that works perfectly in this regard.

What has changed here? I thought HP monitors would automatically support 1920 x 1080, without even having to install any drivers for the Mac (which aren't provided anyway, AFAICS).

Any help or advice appreciated! thx - jduesenb

jduesenb · ‎02-12-2016

Partially thanks to your suggestion to try a difference cable, I solved this myself! Solution: use an Apple Minidiplay --> DIVX adaptor and connect to the HP 27vc via DIVX. The "scaled" resolution on the Display Preference show 1920 x 1080, and there is no overscan or underscan option to set: because the image is scaled exactly to the screen and needs no adjustment. In short, the whole setup configures exactly the same as with my Pavilion 27xi.

The improvement of the "scaled" 1920 x1080 image is very minor, but it's much better than the image I got from this monitor out of the box using an HDMI connection.

I'm extremely puzzled as to why Mac OSX seems to read different information from the DIVX signal than it does from HDMI.

thanks again for your help & advice!

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erico · ‎02-09-2016

Which video input to the display are you using?

What is the currently selected resolution?

You should be able to select 1920 x 1080 @60 Hz from within OSX

Which Apple product are you using?

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jduesenb · ‎02-09-2016

@erico wrote:
Which video input to the display are you using?

What is the currently selected resolution?
@you should be able to select 1920 x 1080 @60 Hz from within OSX

Which Apple product are you using?

Thanks for your reply.

@I'm using the HDMI input to connect the HP 27vc to a new Mac Mini. As you say, I **should** be able to select 1920 x 1080 @60 Hz from within OSX, but that option is not displayed on the Displays System Preferences. Instead, when "Scaled" resolution is selected, the default resolution option is displayed as "1080" (not "1920 x 1080"). The refresh rate is 60 Hz, and there is also an "Underscan" option, which I've never seen before. This seems to slightly scale the display. There is very little info about this parameter in either the Mac OSX Help, or in the HP 27vc's options.

Compared to the Pavilion 27xi, when connected to the same Mac Mini, the overall quality of the display is nopticeably degraded.

Any help appreciated, I'm totally baffled by this (and I'm about ready to return the HP 27vc!!)

erico · ‎02-10-2016

What is the specific Apple Mac that you have?

There should be a model number on it somewhere. What are the video output specs on the Mac?

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Lu4 · ‎02-10-2016

20D1361A-AFFD-43FA-95D8-29CA4EDFB720

erico · ‎02-10-2016

Sorry, but that didn't help.

You said something about it being a Mac mini? Check out the following Apple URL.

https://support.apple.com/en-us/HT201894

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jduesenb · ‎02-10-2016

@erico wrote:
Sorry, but that didn't help.

You said something about it being a Mac mini? Check out the following Apple URL.
https://support.apple.com/en-us/HT201894

The Mac mini in question is model # MGEN2LL/A. The only video specs I can find are:

GPU Type: Intel Iris
Video Connectors: 1 x HDMI, 2 x Thunderbolt 2

(It's connected to the monitor via HDMI. I could try connecting via a Thuderbolt ->DVI adaptor, though I can't see why that would make any difference.)

thx again for your replies.

jduesenb · ‎02-10-2016

and here is some more video info on my Mic Mini that I found on Apple's website:

Video Support
** Support for up to two displays at 2560 by 1600 pixels, both at millions of colors

** Thunderbolt digital video output
** Native Mini DisplayPort output
** DVI output using Mini DisplayPort to DVI Adapter (sold separately)
** VGA output using Mini DisplayPort to VGA Adapter (sold separately)
** Dual-link DVI output using Mini DisplayPort to Dual-Link DVI Adapter (sold separately)

HDMI video output
** Support for 1080p resolution at up to 60Hz
** Support for 3840-by-2160 resolution at 30Hz
** Support for 4096-by-2160 resolution at 24Hz
** DVI output using HDMI to DVI Adapter (sold separately)

erico · ‎02-10-2016

Had you considered trying a different HDMI cable?

If connecting the Mac mini to the other HP display you mentioned gives you 1080p output, then the issue would logically be the display itself.

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jduesenb · ‎02-10-2016

@erico wrote:
Had you considered trying a different HDMI cable?

If connecting the Mac mini to the other HP display you mentioned gives you 1080p output, then the issue would logically be the display itself.

I don't actually have another HDMI cable. To be clear: I've connected the Mac Mini to my Pavilion 27xi (with no problems), and I've connected the same Mac Mini to the HP 27vc (with problems); in both cases using the same HDMI cable. As you say, "then the issue would logically be the display [the HP 27vc] itself."

This seems to bring the discussion to a full circle: what's the problem with the HP 27vc? Is it that this particular unit is faulty, or is it some property of this HP model that makes it work less well (at least with Mac minis) than my older 27xi? But that is what my question was to begin with.

I would think HP would be concerned about this, but then again HP does not even claim to be Mac-compatible anymore, so maybe they don't even care about the Mac marker segment.

Thanks for your continuing replies. I'll try another HDMI cable just to make sure. I'll even try a Thunderbolt (mini-display) --> DIVX adaptor and cable. What the heck are "overscan" and "underscan" for anyway?

How do I set resolution of HP 27vc 27-inch monitor to EXACTLY 1920 x 1080? (on Macintosh) ??

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