Dell P2715Q and P2415Q 4K IPS Displays

[jenzjen]

This doesn't sound right at all. Source?

The P2715Q looks great! If your needs include pulling out color calibration equipment, then you might want to stick with something else. If you're just looking for a generally great looking display, it's hard to beat (of course only time will tell how it holds up). Like any product, especially a new technology, there are defective units.

Yes, good idea. They ship with the Dells as well. And they're available at Amazon, Monoprice, Newegg, etc. - not hard to find, and less than $10.

The D300 works great with 4K displays.

Okay, it's completely understandable now that this thread is nearly a 1,000 posts long, but the last few pages of posts are mostly just rehashing what was already discussed and largely determined hundreds of posts ago. And of course the misinformation is starting to creep in. Beware.

https://forums.macrumors.com/threads/1852951/

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I'm thinking of ordering P2415Q or P2715Q from amazon to replace my glitchy U2413, but I will take a big risk as it will be an international order

On amazon there are a lot of bad reviews about the P2715Q quality, what do you guys think about that?

They say there are many color issues with the P2715Q, but since they share the same panel type / manufacturer, I'm not sure whether the P2715Q reviewers are just better at reviews, or the P2415Q is more robust

We did get 1 very 'warm' P2715Q out of 4 and returned it

 

[kaans]

Thanks for that info

I decided to get the 24", seems more optimal for 1080p usage, I guess I can bump it up to 27" with 5K on new horizons

 

[bits]

Dell P2715Q vs Eizo EV2736W

Yesterday I got Dell P2715Q. I have MBP early 2011 2.2 i7, 16 GB, Intel HD Graphics 3000 and AMD Radeon HD 6750M 1024 MB

First connect - nothing. MBP detected this monitor, but I can't see anything - can't open menu (only signal input selection). I think that cable may fail, but with other cable still black screen.
I'm thinking about send back this unit.
Trying to click everything, turn on and off monitor and MBP... nothing - black screen (MBP detect P2715Q, refresh screen and send all windows to Dell, but Dell only enable backlight and I see only black screen).
After 5 min decided to connect DVD via HDMI - it works fine! I can finally open menu! Changed DDC/CI to disabled. I don't know why I can't access to this menu without signal - what's wrong with Dell?! It should have some auto-detect mode (maybe in feature release?).
Then I try my mom MBA 2014 - works fine. In Dell menu I changed MST to secondary, I don't know if it helps or not. So I connect MBP and it works! Finally! Jeej! All cables works fine.

So, MBP 2011:
Full resolution 3840x2160 works ok, but only @30 Hz
1920x1080 hidpi looks amazing - again only @30 Hz; everything is so beautiful, but little too big (after 10 minutes I feel sick, because of low 30 Hz)
I'm trying to find 2560x1440 hidpi, but I don't have that resolution, so changed to 2560x1440 (low resolution) @60 Hz and it works ok.
If you thinking about working @30Hz - don't think about that and don't buy this unit.

I have second monitor - Eizo EV2736W (native 2560x1440). I can connect it to Dell and it works via MST mode (daisy chain). I get 2 mirrored monitors (works only with lid closed). Only mirrored option works - I can't change this.
After some time I can tell that in Dell (with scaled 2560x1440 resolution) everything is blur, Eizo have beautiful text, Dell not.

You can see some photos (little bad colors pics from my phone, but you can see difference it in 2560x1440)

I miss light sensor, but Eizo 4K is too expensive, I can buy 2x Dell 4K. If you want work only on 2560x1440 - buy Eizo.

PS. No, I didn't buy it to run with MBP. I read this thread, somebody say that I can run 2560x1440 hidpi with nMP ...so waiting for the delivery.

 

[kaans]

Yesterday I got Dell P2715Q. I have MBP early 2011 2.2 i7, 16 GB, Intel HD Graphics 3000 and AMD Radeon HD 6750M 1024 MB

First connect - nothing. MBP detected this monitor, but I can't see anything - can't open menu (only signal input selection). I think that cable may fail, but with other cable still black screen.
I'm thinking about send back this unit.
Trying to click everything, turn on and off monitor and MBP... nothing - black screen (MBP detect P2715Q, refresh screen and send all windows to Dell, but Dell only enable backlight and I see only black screen).
After 5 min decided to connect DVD via HDMI - it works fine! I can finally open menu! Changed DDC/CI to disabled. I don't know why I can't access to this menu without signal - what's wrong with Dell?! It should have some auto-detect mode (maybe in feature release?).
Then I try my mom MBA 2014 - works fine. In Dell menu I changed MST to secondary, I don't know if it helps or not. So I connect MBP and it works! Finally! Jeej! All cables works fine.

So, MBP 2011:
Full resolution 3840x2160 works ok, but only @30 Hz
1920x1080 hidpi looks amazing - again only @30 Hz; everything is so beautiful, but little too big (after 10 minutes I feel sick, because of low 30 Hz)
I'm trying to find 2560x1440 hidpi, but I don't have that resolution, so changed to 2560x1440 (low resolution) @60 Hz and it works ok.
If you thinking about working @30Hz - don't think about that and don't buy this unit.

I have second monitor - Eizo EV2736W (native 2560x1440). I can connect it to Dell and it works via MST mode (daisy chain). I get 2 mirrored monitors (works only with lid closed). Only mirrored option works - I can't change this.
After some time I can tell that in Dell (with scaled 2560x1440 resolution) everything is blur, Eizo have beautiful text, Dell not.

You can see some photos (little bad colors pics from my phone, but you can see difference it in 2560x1440)

I miss light sensor, but Eizo 4K is too expensive, I can buy 2x Dell 4K. If you want work only on 2560x1440 - buy Eizo.

PS. No, I didn't buy it to run with MBP. I read this thread, somebody say that I can run 2560x1440 hidpi with nMP ...so waiting for the delivery.

I recently applied this fix: http://embdev.net/topic/284710
And improved the font rendering on my dell
Even the slightest color change made me dizzy, although this fix didn't change colors significantly, I'm very dizzy today
So my point is, the dizziness might not be from the 30hz/60hz difference, yet 30hz is obviously bad, you might consider upgrading your mac, yet wait for DP 1.3, use your Eizo until 5K's roll out

You can change or modify or disable AppleFontSmoothing to adjust the blurry fonts, It's the "LCD Font Smoothing" setting from the General settings

But it's probably a better idea to either run 4K at 60hz, or wait for 5K, since you're accustomed to 1080p+ resolutions

Even I'm having a hard time deciding on the 4K switch, as I'm accustomed to 1900x1200

 

[matthiasiam]

Issue waking

Having a weird issue ever since I got it. I have a mac pro with two other 1080P screens beside it. When I wake them all from display sleep, both 1080p screens wake instantly, but the 4k takes a bit longer, and what happens is the windows that were on the 4k display get resized and shoved to the 1080p screens until it fully wakes up. Once it does, the windows go back, but all weirdly sized. Kind of infuriating when you ALWAYS have to resize the windows. Am I doing anything wrong?

 

[kaans]

Having a weird issue ever since I got it. I have a mac pro with two other 1080P screens beside it. When I wake them all from display sleep, both 1080p screens wake instantly, but the 4k takes a bit longer, and what happens is the windows that were on the 4k display get resized and shoved to the 1080p screens until it fully wakes up. Once it does, the windows go back, but all weirdly sized. Kind of infuriating when you ALWAYS have to resize the windows. Am I doing anything wrong?

That means the 4K gets disconnected

That shouldn't happen, you can test it with any monitor, disconnect them and re-connect them, osx moves the windows to another desktop/monitor, if that monitor is smaller they get resized, when you plug the dell back in they get re-instated but in a shrinked state

Long story short, this shouldn't happen, but I don't know whether this natural with the new Dell's - very disturbing tho, definitely doesn't happen with my U2413

Rarely the U2413 freezes, I reset the power, this happens in that case

 

[matthiasiam]

That means the 4K gets disconnected

That shouldn't happen, you can test it with any monitor, disconnect them and re-connect them, osx moves the windows to another desktop/monitor, if that monitor is smaller they get resized, when you plug the dell back in they get re-instated but in a shrinked state

Long story short, this shouldn't happen, but I don't know whether this natural with the new Dell's - very disturbing tho, definitely doesn't happen with my U2413

Rarely the U2413 freezes, I reset the power, this happens in that case

Exactly. It's disconnecting, but it only disconnects after it hasnt been awake for quite some time. I read some reviews on Amazon that other people experience this as well, specifically when using resolutions that arent 'recommended' I am using 3008X1692

 

[kaans]

Exactly. It's disconnecting, but it only disconnects after it hasnt been awake for quite some time. I read some reviews on Amazon that other people experience this as well, specifically when using resolutions that arent 'recommended' I am using 3008X1692

It might also be a good idea to dabble into the settings, Dell monitors are great in color/anti-glare, yet they are obviously glitchy beyond imagination, a power saving setting might be causing the issue, or just disable stuff like DDC/CI etc one by one, one of those could fix your issue, as a side-effect or direct result

 

[hfg]

Having a weird issue ever since I got it. I have a mac pro with two other 1080P screens beside it. When I wake them all from display sleep, both 1080p screens wake instantly, but the 4k takes a bit longer, and what happens is the windows that were on the 4k display get resized and shoved to the 1080p screens until it fully wakes up. Once it does, the windows go back, but all weirdly sized. Kind of infuriating when you ALWAYS have to resize the windows. Am I doing anything wrong?

I have a similar experience about 10% of the time after waking from sleep. My 2012 Mac Pro 5,1 GTX 680 is connected to a Dell P2715Q (DisplayPort) and a Dell U2713HM (DVI). The 4K Dell occasionally doesn't full wake from sleep, although an active cursor does appear on the screen, and the windows are all gathered over to the standard monitor (which comes on every time).

I simply cycle the 4K monitor power button and that restores everything back to as I left it.

I don't have the "resize" issue, because I am running the text on the 4K monitor in standard "retina" mode at 1080p whereas the standard monitor is running at 2560x1440, thus there is no need to resize the lower resolution text window.

It is annoying ... but not a show-stopper for me.

 

[VirtualRain]

Exactly. It's disconnecting, but it only disconnects after it hasnt been awake for quite some time. I read some reviews on Amazon that other people experience this as well, specifically when using resolutions that arent 'recommended' I am using 3008X1692

It's Dell's way of telling you to junk your old displays and buy another 4K display . I run a pair of P2715Q without issues. I mean seriously, how can you even look at your old displays next to the 4K?!

 

[larrysing1963]

I've managed to find settings which pretty much keep my P2715Q up and behaving normally about 99% of the time. I've had about 2 or 3 instances of oddity in the 2 months that I have owned mine.

I love it.

 

[bits]

I recently applied this fix: http://embdev.net/topic/284710
And improved the font rendering on my dell
Even the slightest color change made me dizzy, although this fix didn't change colors significantly, I'm very dizzy today
So my point is, the dizziness might not be from the 30hz/60hz difference, yet 30hz is obviously bad, you might consider upgrading your mac, yet wait for DP 1.3, use your Eizo until 5K's roll out

You can change or modify or disable AppleFontSmoothing to adjust the blurry fonts, It's the "LCD Font Smoothing" setting from the General settings

But it's probably a better idea to either run 4K at 60hz, or wait for 5K, since you're accustomed to 1080p+ resolutions

Even I'm having a hard time deciding on the 4K switch, as I'm accustomed to 1900x1200

Thank you! Now it's little better, not the same quality, but little better.
Tomorrow I will test it on nMP

 

[edry.hilario]

I've managed to find settings which pretty much keep my P2715Q up and behaving normally about 99% of the time. I've had about 2 or 3 instances of oddity in the 2 months that I have owned mine.

I love it.

what are your settings?

 

[larrysing1963]

what are your settings?

Well, what is the specific issue you are having? Different settings apply to different problems.

In my case, the "failure to wake up from sleep" issue was solved mostly by changing the "DDC/CI" setting to "disable" on the monitor settings.

 

[edry.hilario]

Well, what is the specific issue you are having? Different settings apply to different problems.

In my case, the "failure to wake up from sleep" issue was solved mostly by changing the "DDC/CI" setting to "disable" on the monitor settings.

I havent gotten it yet, im not entirely sure if i want to get it since a lot of people are reporting so many issues, I havent made up my mind yet.

 

[wakele]

After some time I can tell that in Dell (with scaled 2560x1440 resolution) everything is blur, Eizo have beautiful text, Dell not.

Have you tried to change the "sharpness" setup in the monitor osd? Menu > Display > Sharpness. Default it's 50. Try 60 or 70 values for 1440, and no blurry at all. Go back to 50 for 1080hiDpi, or you will se everything too sharp...

 

[larrysing1963]

I havent gotten it yet, im not entirely sure if i want to get it since a lot of people are reporting so many issues, I havent made up my mind yet.

Well, for IPS 4K around $600, it's hard to beat. For every person who has "issues" there are people like me also who have none, now.

 

[wakele]

well, for ips 4k around $600, it's hard to beat. For every person who has "issues" there are people like me also who have none, now.

+1

 

[bits]

Have you tried to change the "sharpness" setup in the monitor osd? Menu > Display > Sharpness. Default it's 50. Try 60 or 70 values for 1440, and no blurry at all. Go back to 50 for 1080hiDpi, or you will se everything too sharp...

Thank you! I didn't notice this setting. I think it should work like Apple products
Now I have nMP and I didn't see 2560x1440 hidpi (only normal mode), so I use default for display, because @2x looks great. 5K 27" monitor will be the best choice when Apple will support it.
I'll test bigger resolution with more sharpness. It should work better when I have 2 screens at the same resolution.

Well, for IPS 4K around $600, it's hard to beat. For every person who has "issues" there are people like me also who have none, now.

I think this monitor didn't have any issues. I have some problems at the beginning, but it's only some settings to change. Some people write about wake-sleep problems, plug power off is not big problem. Maybe first models have this issue or Apple fixed that.

If you want to buy this model, don't read this thread and don't worry about "issues", just buy it!


PS. If you want to work only with 2560x1440 and lighting changes often - I think Eizo model it's better, because it have light sensor.

 

[VirtualRain]

I havent gotten it yet, im not entirely sure if i want to get it since a lot of people are reporting so many issues, I havent made up my mind yet.

I think there's a lot of confusion about issues that has nothing to do with the Dell displays, and everything to do with the level of 4K support in older MacBooks (and even newer Macs). I would suggest that people trying to drive 4K displays on Laptops that don't officially support it or drive multiple displays are the ones having problems. Pushing the envelope with Apple rarely results in satisfying results.

If you want to drive multiple displays, where one or more is 4K at 60Hz, without issues, a 2013 nMP is your only option. Period. Anything else is a gamble.

 

[smoothjazz]

MacPro 2013 and Dell P2715Q Dual Monitor Setup

Hi,

I just setup a pair of these P2715Q monitors with my 2013 MacPro using the supplied MiniDisplayPort to Displayport cables. The screens look fantastic. The main issue I'm having is after restarting or cold starting the computer. Both monitors appear and only show a blank desktop. No menu bar, no Finder icons, etc.
The only fix so far is to power off one of the monitors - then back on. Then all is fine. I've unchecked the Mission Control thing to allow displays to have separate spaces. On a normal startup - the second monitor is usually just a blank desktop. It's like they are both showing that blank desktop.

I ordered a pair of minidisplayport to minidisplayport adaptors to try - incase the rub is with the included cable configuration. I've tried resetting PRAM, NVRAM, etc. - Tried different thunderbolt ports.

Actually - when trying different thunderbolt ports - things got wonky in that the second monitor stopped being acknowledged by the computer. I kept moving the thunderbolt cable around - then it finally came back on. Not fun.

Another strange issue yesterday was when I sat down to work - both monitors were in sleep mode (computer still running though) - the primary monitor wouldn't activate. Even after a restart. I couldn't even power cycle the monitor with the power button. I ultimately had to pull the power cord on the monitor to get it back. Again... not fun.

One thing to note as well - My primary monitor is Rev 01... the secondary was built 2 months earlier and shows Rev. 00. I'm waiting for them to replace the second monitor. These guys update the firmware and other items and never tell anyone what's changed. But I sure want the most current build.

Any thoughts? - I'm running 10.10.2.

Having to power cycle the second monitor every time I restart the MacPro is not a great idea.

Thanks,

Sam

 

[VirtualRain]

Hi,

I just setup a pair of these P2715Q monitors with my 2013 MacPro using the supplied MiniDisplayPort to Displayport cables. The screens look fantastic. The main issue I'm having is after restarting or cold starting the computer. Both monitors appear and only show a blank desktop. No menu bar, no Finder icons, etc.
The only fix so far is to power off one of the monitors - then back on. Then all is fine. I've unchecked the Mission Control thing to allow displays to have separate spaces. On a normal startup - the second monitor is usually just a blank desktop. It's like they are both showing that blank desktop.

I ordered a pair of minidisplayport to minidisplayport adaptors to try - incase the rub is with the included cable configuration. I've tried resetting PRAM, NVRAM, etc. - Tried different thunderbolt ports.

Actually - when trying different thunderbolt ports - things got wonky in that the second monitor stopped being acknowledged by the computer. I kept moving the thunderbolt cable around - then it finally came back on. Not fun.

Another strange issue yesterday was when I sat down to work - both monitors were in sleep mode (computer still running though) - the primary monitor wouldn't activate. Even after a restart. I couldn't even power cycle the monitor with the power button. I ultimately had to pull the power cord on the monitor to get it back. Again... not fun.

One thing to note as well - My primary monitor is Rev 01... the secondary was built 2 months earlier and shows Rev. 00. I'm waiting for them to replace the second monitor. These guys update the firmware and other items and never tell anyone what's changed. But I sure want the most current build.

Any thoughts? - I'm running 10.10.2.

Having to power cycle the second monitor every time I restart the MacPro is not a great idea.

Thanks,

Sam

It's not the cables or the adapters. I believe, because the Mac firmware is not DP1.2 SST aware (and thus starts in dark mode), when OS X gets to the login or part of the startup process where the GPU/display drivers load, it doesn't know which display is the primary sometimes, which is why you need to temporarily power off or disconnect one. At that point, it knows to use the remaining display as primary and you can then plug in or turn on the other display which becomes the secondary. Playing around with what ports and busses you use may help.

 

[smoothjazz]

I tried different ports... didn't seem to help other than cause the secondary monitor to completely not be recognized. Nice. Any other ideas?

 

[VirtualRain]

I tried different ports... didn't seem to help other than cause the secondary monitor to completely not be recognized. Nice. Any other ideas?

Submit feedback to Apple asking for a firmware update to light up a 4K SST display at boot.

 

[ShawnF]

Tried to capture the high PPI/DPI on the P2715Q which I have scaled to 1920x1080 HiDPI. It's so very clear, almost as if looking at printed paper.

Here is the image, although I don't know if you can all see the detail enough. It looks way more grainy in this picture than it looks in person.

So running the P2715Q in 1920 x 1080 resolution actually results in sharp images and text? I thought it would be blurry due to downscaling of resolution? Can you please confirm?