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GGuth
Novice
4,818 Views

Graphics Resolution on NUC?

Just installed a NUC7PJYH, pretty neat system. Took several iterations of updates, drivers, Intel Driver analysis and further updates (no sound on original install), etc.

The final result is good, but video resolution is limited to 1920x1080. My PC to the same TV displays 2460x1440. The Intel specs say it supports: 4K graphics @60K. (Intel Graphics UHD 605). The HDMI specs say: "The maximum supported resolution is 4096 x 2160@ 60 Hz, 24 bpp".

Several other review sites also say it supports: 4096x2160.

Any hints on why Windows shows a lower max. resolution, and how to improve it?

.

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15 Replies
n_scott_pearson
Super User Retired Employee
1,061 Views

This is usually the result of using a crappy quality HDMI cable. Intel HD Graphics can be picky regarding what cables you use and cables that work elsewhere sometimes don't work here (even when they should). I can only suggest that you try a good-quality, HDMI 2.0a-compliant cable and see if this makes a difference.

Hope this helps,

...S

GGuth
Novice
1,061 Views

Thanks - I don't think so (but will try it.)

It is a good cable, and was used on the previous HTPC this replaced.

And I don't see how the graphics card properties in the NUC shown as available resolution settings would/could be changed by the cable used.

DPers1
New Contributor III
1,060 Views

Set the TV to 30Hz and if that works it's your cable.

GGuth
Novice
1,060 Views

Do you mean to set the graphics output on the NUC to 30 Hz? Else I don't see how changing the TV, would change the H/W list of capable resolutions in the NUC. And, not sure what it means (how?) to change the TV refresh rate?!

DPers1
New Contributor III
1,060 Views

Yes in Graphics settings set TV refresh to 30 Hz. I actually use that because I need a 15M HDMI cable and no way do you get 60Hz over 15M. It's pefectly OK for watching 4K content only if you do gaming do you need 60Hz but then anything over 2M might be a stretch. I have IRIS 640 Graphics on my NUC but I think it's all about pumping data down the HDMI cable.

GGuth
Novice
1,060 Views

Thanks.

Changing the refresh rate does not seem to change the resolution options.

Interestingly enough, it was (is) set to 59 Hz, and has options for 24Hz, but not 30?!

Does anyone "out there" have this same NUC, and what resolutions does it show in the control-panel, or in the Intel Graphics Settings app?

Seems to me, that the specs and the actual hardware (or tools?) do not agree.

PeterNUC
New Contributor I
1,060 Views

guthrie,

Currently I do not any 4K TV/display at hand, so I cannot tell what resolutions does it show in the control-panel. However, it looks like quite often the information, which is sent from a TV/display can be wrong or interpreted incorrectly by NUC. Especially, when the TV/display HDMI port is configured as 2.0. Besides, your results could also depend on the TV brand. My NUC7PJYH "hates" Samsung TVs. What's your TV and how the HDMI port is configured?

Best, Peter

DPers1
New Contributor III
1,060 Views

Set refresh rate to 24 and set resolution to 2160(4K) and see if that works you have to enable on TV and in display settings. If you can use 4K at 24 Hz then it's a cable issue.

PeterNUC
New Contributor I
1,060 Views

Thaidroid,

I tried my NUC7PJYH with 4 cables (from No Name to "Certified Premium High Speed HDMI Cable, 4K @ 60Hz, HDR, 18Gbps"). They behave exactly the same:

On Samsung 4K monitor - perfect 4K-60Hz-444 picture.

On Samsung 4K TV (with HDMI port set to 2.0) - "No Signal"

Unfortunately, there are (lots of) compatibility issues at HDMI 2.0.

Best, Peter

ThaidroidThaidroidThaidroid
DPers1
New Contributor III
1,060 Views

PeterNuc,

Yes I know, I tried many HDMI cables to try to get 60Hz working I had it working with and old cable ..sort of, 5M cable, anyhow streaming 720 or 1920 stuff from HDD was worse than if I used 30HZ probably because I was outside of spec(but still sort of working). I am very happy with 30Hz for what I'm doing.

Guthrie.

959Hz ??? that's what I call a hefty refresh rate. If 60Hz, HDR = 18Gbps then 959Hz would require 270Gbps.......

24Hz is the refresh rate of all TV broadcast so you can try that. I have set HDMI 2.0(HDR I believe is the same thing on other TV's) to Off on my TCL TV, that means that does 4K at a slower refresh rate and it works on a 15M cable. I can still stream YouTube 4K content and it's spectacular but needs about 40Mbit on your internet..........

GGuth
Novice
1,060 Views

@PeerNUC

Thanks. I didn't realize that the possible resolutions were sent from the TV to the Display drivers - I thought they were just what the graphics chipset could output.

Mine Shows "Sony Digital TV".

Interestingly enough, I had started the NUC with all cables connected before, but now if I disconnect and change cables (cable type or quality does not seem to matter), I get a pop-up Notification on the NUC:

Clicking on it gives no visible result or action.

OK; looking more closely from these notes; I checked my Sony TV, and it says it only supports up to 1920x1080 on HDMI inputs, which is what I am getting.

Thus, all seems to be - correct. The NUC then is allowing output resolutions not limited by what it can do, but by what the connected TV says it is capable of.

I don't know what happens when I am connecting my PC to it with higher screen resolution (which had led me to think the TV could support that higher resolution); it must somehow be adjusting the screen mirroring output on the HDMI to the lower resolution of the TV input capability, and mapping the higher res onto the TV display? The is the first thing that started all of this; when I connected my PC to the TV, it seemed to be properly displaying that much higher resolution (2460x1440) of the PC screen. Then the NUC output, looks to be at a much lower resolution - larger icons, fonts bigger, everything bigger and thus smaller screen real-estate.

So, I am not sure of exactly what/how this is working - since the PC connection looks/acts like the hi-res, but the NUC does not. But it seems like I cannot expect a higher res to this TV from the NUC, even though the PC connection to it looks/acts like a higher res.

And, no idea what the above notification means.

Thanks to all for the information and education.

(Hey - maybe this means I need to get a newer fancy TV! :-) )

PeterNUC
New Contributor I
1,060 Views

Wow! That's an interesting resolution. What's the model of your TV? Or is it a display? By the way, I had the best compatibility experience (in terms of 4K@60Hz) with TVs by Sony. I'm not sure that the TV sends ALL the resolutions it accepts, but at least it reports its "native" resolution.

GGuth
Novice
1,060 Views

PeterNUC:

Thanks- not sure what to do with this idea; 'best compatibility experience (in terms of 4K@60Hz) with TVs by Sony"

My TV does not have settings for the HDMI input to change/adjust it.

TV is a Sony KDL55EX640.

GGuth
Novice
1,060 Views

@ Thaidroid

Not sure what this means to do:

"Set refresh rate to 24 and set resolution to 2160(4K) and see if that works you have to enable on TV and in display settings."

Set it where? On the NUC, in the Intel UHD Graphics Control panel, it only shows the resolutions I mentions (1920x1080) as highest, and changing refresh rates does not affect that.

It does have an "advanced button, which lets one set any resolution, but gives the warning, "Caution, this may damage the display, or burn-out the Chipset", so I don't think I want to try that(!).

And I don't have any controls like this on the TV end.

DPers1
New Contributor III
1,060 Views

Guthrie,

Your TV spec

  • Resolution

    1920 x 1080

  • Display Format

    1080p (Full HD)

If your TV is actually 1920 don't worry about the 4K settings. It should work at 60Hz 1080P. Don't set it to anything else that should be OK.

You can set in the Intel UHD Graphics Control panel and also in Windows display settings.

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