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Copy on Black Friday. My UP2414Q should be delivered next Tuesday. So let the games begin. I got a set of JBL Pebbles speakers for the monitor. They are surprisingly good for the $35 cost.

If we like 4k, especially for photo editing in LR, Santa will have to make room in his brown truck for two 27-28" monitors.

The stand arrived yesterday...bent from poor packing by seller. The monitor screen should arrive today. Wish me luck.
 
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Got my Dell UP2414Q today. Sweet. I am using it so far in full 4k resolution and not scaling. I have not yet calibrated it. May do that tomorrow if I get the chance. The seller left out the USB A to B cable needed from the hub and also the DP to miniDP cable. So I had to get those from Frys. Things could be far worse. So far I like it better than my ATD.
 
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I am using this monitor for about one week now and I am facing a lot of lag issues on my macbook 2015 15" iris pro machine. I already tried El capitan which was way better but the animation lag on mission control or resizing windows was still there. Is this normal ?
 
Don't know about performance norms on a 2015 machine. No problem with my mid 2013 rMBP. If you leave the monitor on DHMI or DP 1.1 you will get 30Hz and have jerky mouse movements. You may or may not notice the flicker. So make sure to do DP 1.2 with 60Hz.
 
Don't know about performance norms on a 2015 machine. No problem with my mid 2013 rMBP. If you leave the monitor on DHMI or DP 1.1 you will get 30Hz and have jerky mouse movements. You may or may not notice the flicker. So make sure to do DP 1.2 with 60Hz.

Hm actually that isn't the problem for me. I am using DP 1.2 with 60hz...
So you don't have any lags like resizing windows or even scrolling through webpages with alot of images?
If that is true then there is something really strange going on here.
 
Hello,

I have received some messages asking me how to config the DELL P2415Q to work in 1080p HiDPi.

I have it working at 1080 HiDPi @ 50 Hz in a MacBook pro 13 retina 2013.

I will give you directly my .plist working file, you just have to copy it in:

/System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-10ac

Just unplug and plug the monitor and select 1920x1080, it should be working in HiDPi (yours eyes will know it quickly :D !!! )

Remember that this trick will change the name of the monitor for OSX ( it will say U28D590). (It doesn't matter, but if anyone have a .plist with the right name please share)

It works also in El Capitan GM Candidate :)

Hi, the system doesn't let me copy the file to that directory.How do I overwrite that? I am running El Capitan GM.
 
Hi, the system doesn't let me copy the file to that directory.How do I overwrite that? I am running El Capitan GM.
Hi,
It is a "system folder", so El Capitan will ask you for your credentials to confirm the action of copy, so just have to authenticate when the system ask.
 
Ok, maybe it is the El Capitan SIP (System Integrity Protection).

Try to disable it ( https://forums.macrumors.com/threads/disable-sip.1902305/ ) and try it again. If it works, you can re-enable SIP after change the file.

Did it work?

Hi, disabling SIP worked for copying the file, but once I managed to copy it, the screen remained black after I plugged it in. Also the macbook's screen remained black, and the only way to get it to work again was to shut it down from the button and re power it.
 
I'm planning to purchase P2415Q for My 15 inch RMBP. Do this monitor still have wake-up issue (some users said that their monitor had no response when you tried to wake it up from sleep)?
 
I'm planning to purchase P2415Q for My 15 inch RMBP. Do this monitor still have wake-up issue (some users said that their monitor had no response when you tried to wake it up from sleep)?

It happens sometimes, especially after a long period of sleep. Generally, replugging the thunderbolt cable on the mac side and pressing the monitor power button to turn it off then back on, fixes it.
 
Cleaned off the desk and disconnected my ATD. :eek:

Connected the UP2414Q with a mDP to DP cable from Frys (used monitor did not come with the cable). So 4 cables to my 2013 15" rMBP: power, TB to my LaCie drives, mDP to the Dell monitor, USB to the USB-A hub port on the monitor. To the monitor's USB ports I connected my keyboard (never liked Bluetooth ones), US Robotics fax/modem, and JBL Pebbles speakers.

When I booted up...every thing worked! :) The default for the DP ports on the monitor is DP1.1. So I changed that on the monitor to DP 1.2 for 4k at 60Hz. Worked like a champ!!!!

I have the monitor at full 4K mode and love the crisp black text on the white web pages. IMHO, no need to scale to 1.25 or 1.5. I guess my face is around 2 feet from the screen. From what I can see, the one app that needs serious scaling of its text is Lightroom. 4K is great for editing images. But the text in the modules is far too small even with Preference adjustments.

So far one of the best $350 expenditures I have done computing...in a long time. :D
 
I bought p2415q.
It's running 60Hz with scaling option- it means making a screen that looks like "1920x1080". My OS is El Capitan GM (rMBP early 2015, 13'').

Monitor is pretty good, fonts are clear now, and it looks like retina on 23.8'.

I have no wake-up issues or something. Everything seems to be good.
 
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Hey all,

I have to say macrumors does a pretty poor job of documenting various Dell issues, I think various Mac issues with various Rev's/models of these monitors should have been documented, by the way, Dell no longer supports OSX, so try to stay away from these monitors

Let me contribute

P2415Q, Rev A01, Latest Yosemite, Startech Cable: (from Amazon UK)
Whenever the monitor wakes from Cold Sleep, the MBp adopts all the windows, then offloads it to the external monitor, so every window is resized and messed, it's annoying beyond imagination yet liveable with, used to happen 20% of the time, now it happens 100% of the time

My Dell U2413 used to freeze occasionally, don't wake up from sleep, this monitor also has that issue, yet with a lower frequency, I would say 0.5%, while the Dell U2413 was almost 5%

I have a keyboard macro that re-enlarges windows, but still, it's annoying, and some webpages can't recover from this resize (Tinkercad)

I try various settings with each monitor, hoping one fixes these issues, yet none does
 
Hey all,

I have to say macrumors does a pretty poor job of documenting various Dell issues, I think various Mac issues with various Rev's/models of these monitors should have been documented, by the way, Dell no longer supports OSX, so try to stay away from these monitors

Let me contribute

P2415Q, Rev A01, Latest Yosemite, Startech Cable: (from Amazon UK)
Whenever the monitor wakes from Cold Sleep, the MBp adopts all the windows, then offloads it to the external monitor, so every window is resized and messed, it's annoying beyond imagination yet liveable with, used to happen 20% of the time, now it happens 100% of the time

My Dell U2413 used to freeze occasionally, don't wake up from sleep, this monitor also has that issue, yet with a lower frequency, I would say 0.5%, while the Dell U2413 was almost 5%

I have a keyboard macro that re-enlarges windows, but still, it's annoying, and some webpages can't recover from this resize (Tinkercad)

I try various settings with each monitor, hoping one fixes these issues, yet none does

I would never expect Dell to support OS X.

I have a P2715Q A01 connected to a 2010 Mac Pro 5,1 via GTX 980 running OS X 10.10.5. I have never experienced any window resizing unless I changed resolutions through System Preferences.

I did a quick search on Google and it appears that windows resizing on external monitors connected to MacBook Pros is not limited to Dell monitors. I didn't see any fixes, just some work-arounds. One site suggested turning off mirroring alleviates the problem.
 
Thanks for the info, I feel more hopeful now

I was concentrating on the P2415Q, but started researching more diversely and found this: https://forums.macrumors.com/threads/nmp-windows-resize-after-waking-from-sleep.1757688/ - currently reading it

The MBp is a mid-2014 high-end one, yet it can't drive the 4K well (performance is on the edge), the 4K monitor itself is a bit slow to wake up too, any of these issues could be causing the issue, as it seems

If only OSX restored windows to their original sizes too, this issue wouldn't be a problem, currently the windows are restored to their original screens, yet they are shrinked

If you Mac Pro doesn't have another monitor, or if that monitor is 1920x1080 too, you might not have noticed the issue
 
During my search regarding your issue, I read of a few users using an app named Moom from the Mac App Store to help deal with the resizing of windows.

The slow wake-up seems to be a common issue with the P2415Q and P2715Q. It's not an issue isolated to OS X or Macs.

Correct, the P2715Q is the only monitor connected to my Mac Pro. I run it at 3200x1800 resolution.
 
The slow wake-up seems to be a common issue with the P2415Q and P2715Q. It's not an issue isolated to OS X or Macs.

Which firmware version? A00 you don't want. My Dell UP-2414Q does not have that problem.
 
Which firmware version? A00 you don't want. My Dell UP-2414Q does not have that problem.
There are A00, A01, A02, A03 revs with the P2*15Q's, so it's no longer as simple anymore as avoid A00 and rejoice

By the way, I'm also using Moom, had a keyboard macro set to RGui+O that maximizes the focused window, but still, the issue is annoying (It calls the Moom shortcut, which I set as Ctrl+Alt+Cmd+Shift+O, to avoid clashes, +Space for maximize, +Esc to hide the Moom UI)
 
A warning if you upgrade to El Capitan while in clamshell mode on a MBP.

When the update starts, the Dell screen will display a blank screen for a while.
In fact, El Capitan is installing in the background but even if you open your MBP,
the screen of the MBP will remain off, as it the mac was shut down.

So do not do the same mistake than me and consider that at this point the mac is not responding and powering it on/off with the cool result of having an unbootable system :p.
(Hopefully I could easily recover the situation with an OSX reinstall from the recovery boot).

TL;DR: it is preferable to start the El Capitan update not in clamshell mode.
 
This happens to me a lot when I turn the brightness to 0 of the MBP, sometimes the electrical grid goes offline, only the MBP remains but with 0 brightness, I end up holding power thinking the MBP froze, while in reality it's just a dark screen

El Capitan fonts suck, yet the window resizing issue I complained about is probably solved, when the windows are re-instated, they are now automatically resized (It only happened once, so I'm not 100% sure whether it will always be like this)
 
I run a pair of 2715s and updated my Mac Pro to 10.11 this evening. I was pleased to see that it boots straight to the login prompt now. Previously on Yosemite, I needed to toggle the power on my secondary display to get the login prompt to appear. That's fixed.

Now, if Apple would just issue a firmware update to enable 4K in EFI so we could get proper boot screens, you might be able to conclude that 4K is no longer bleeding edge. Alas, we're not quite there yet :(
 
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