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Dell P2715Q and P2415Q 4K IPS Displays
- Thread starter VirtualRain
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Well, not really.
Thunderbolt is involved. 
The LG 34" UltraWide is running on a TB cable/port. (which, by the way, powers a TB external SSD drive and all the USB ports on the monitor, with no USB uplink cable required. VERY cool.)
The Dell P2715Q 4K monitor is running on the DP-to-mDP cable that came with the monitor.
Little help?
Girlfriend wants to buy a new mac mini.
anyone here try the p2715q on a new mac mini?
Girlfriend wants to buy a new mac mini.
anyone here try the p2715q on a new mac mini?
i'm running the 24" version (p2415q) with a 2014 mac mini i5 2.8
it works fine running at 51hz. i have to use both hdmi and dp cable though, otherwise the screen locks up or goes black. you have to use switchresx to handle the resolution settings if you want to run at anything faster then 30hz.
what rez do you like? she's not into super high resolutions so lower is fine.
She would be hooking it up to the 27" i left at her place so i can get work done when i am there.
thanks!
i'm running at 1080p (hidpi). if she's not after "retina" like clarity i suggest maybe the dell u2515h or even a 27" wqhd display... easier for the mac mini to drive, and you would't need additional software to get the monitor to work at the faster refresh rate.
I had my first "lock up on wake" today on my P2715Q since changing the "DDC/CI" setting to "disable."
After 7 hours of sleep mode, the other monitor woke up, but the image on the Dell was black and the power button had no effect - I had to unplug the monitor from the strip to get it to come back. But then it was fine.
This is so very odd.
After 7 hours of sleep mode, the other monitor woke up, but the image on the Dell was black and the power button had no effect - I had to unplug the monitor from the strip to get it to come back. But then it was fine.
This is so very odd.
So, someone is using "my" solution of they both cables as well!
I thought it was something with my setup, but as I can see, same mac, same screen, same solution. It is weird, isn't it? Have you noticed that, when you disable the hdmi output after logging in, the dp goes to sleep as well and only wakes up after you move the mouse or press any key? I am doing that via switchresx to avoid useless work from the cpu-gpu keeping they both outputs...
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So, someone is using "my" solution of they both cables as well!
I thought it was something with my setup, but as I can see, same mac, same screen, same solution. It is weird, isn't it? Have you noticed that, when you disable the hdmi output after logging in, the dp goes to sleep as well and only wakes up after you move the mouse or press any key? I am doing that via switchresx to avoid useless work from the cpu-gpu keeping they both outputs...
Yep, it's a strange workaround, but it seems the only stable way to keep the monitor working properly at 51hz. my macbook pro 13" has no issues running the display with the dp cable only. just seems like a mac mini issue.
Got my 2415Q today and set it up, but I can't get picture. I'm running it to a 7950, which only has two mini display portsso using the included mDP -> DP cable wasn't going to work. No problem, I thought, and fished out a Thunderbolt cable for a mDP -> mDP connection. Except it's not working at all. When I select DisplayPort as the source, it says "No DP Cable: The display will go into power save mode in 5 minutes." Fine, then, switch to mDP in the source, but then it says "There is no signal coming from your computer". The Mac Pro is on and awake, so I have no idea what the issue is. At first I thought the 7950 couldn't handle a 1080p monitor being plugged in at the same time (although it should be able to drive both) but unplugging the 1080p monitor and just leaving the 2415Q plugged in doesn't alleviate the problem. Trying to run the monitor from a 2014 MBP and I get nothing either. I assume there's a very obvious problem I'm overlooking, like it somehow cannot be driven by a TB cable?
from my own experience, a thunderbolt cable will not drive the dell display. i'm using the supplied dp to mini dp cable. as far as the other issues with your mac pro, that's outside of my knowledge base. hopefully someone will chime in soon for you.
Welp, figured it out. So yeah, the Thunderbolt cable doesn't seem to work, but it also wouldn't work running the supplied mDP -> DP cable in reverse, with the DP going into the MST DP port on the monitor... unless I *also* had the ASUS 1080p monitor plugged in as well.
So now I've got them both working. Bizarre.
yea, it's strange. my mac mini seems to be working just fine with the dell 4k, so long as it's running two connections to the same monitor. the mini actually works best if it thinks it's driving (2) 4k displays... 1@30hz and 1@51hz... bizarre...
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The mac mini handles it very well (they use very similar setup), only some animations of the yosemite are a bit crappy, but nothing that will annoy you so much. For example, when you double tap the magic mouse for mission control, it is not completely fluent, but who cares?). The general performance of the os is really fluent and fast (I don't work with heavy image software though).
You can use 1440p@60hz without any problem, but no hiDpi (at less I haven't been able to activate it). It looks fantastic with this one, not as sharp as 1080p HiDpi, but good enough. I use 1440p to work (more real estate) and 1080p hiDpi for other stuff (very sharp image quality).
I received my P2715Q and the display itself seems to be working fine on my nMP.
DELL P2715Q:
Resolution: 3840 x 2160 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
I hooked it up with the three cables that came in the box, namely:
• Power cable (varies by country)
• USB 3.0 upstream cable (enables the USB ports on the monitor) and
• DP cable (mDP to DP)
Whereas the display itself works great the USB downstream ports (4) don't seem to work at all, neither with a keyboard, mouse nor an Apple USB SuperDrive.
What am I missing?
Do I have a defective unit that needs to be send back?
Or did I overlook something?
TIA for your feedback.
DELL P2715Q:
Resolution: 3840 x 2160 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
I hooked it up with the three cables that came in the box, namely:
• Power cable (varies by country)
• USB 3.0 upstream cable (enables the USB ports on the monitor) and
• DP cable (mDP to DP)
Whereas the display itself works great the USB downstream ports (4) don't seem to work at all, neither with a keyboard, mouse nor an Apple USB SuperDrive.
What am I missing?
Do I have a defective unit that needs to be send back?
Or did I overlook something?
TIA for your feedback.
Dell P2415Q with MacBook Pro Retina 15" mid 2014
The monitor works great with the mDP cable from Dell to the DP input on the monitor. I get 3840x2160 resolution at 60 hz.
I can't get my old, now secondary, Dell ST2310 to work off the DP output from the P2415Q. On the ST2310 there are only HDMI, DVI-D and VGA inputs. I can run an HDMI cable from the rMBP to the ST2310 and get a 1080P 30 hz. When I run a DP to HDMI adapter cable with the same HDMI cable to the ST2310, there is no signal detected on the ST2310.
Maybe this is an invalid configuration, but I was hoping not to have to use the HDMI output from the rMBP.
Also, if I do use the HDMI output from the rMBP (with the rMBP lid closed), I can get the extended monitor, but all the Desktop icons are on the far right of the secondary or extended monitor. No matter what I do with the "Arrangement" under the rMBP Preferences, I can't get just a blank extended screen on the secondary monitor. Any fix for that?
The monitor works great with the mDP cable from Dell to the DP input on the monitor. I get 3840x2160 resolution at 60 hz.
I can't get my old, now secondary, Dell ST2310 to work off the DP output from the P2415Q. On the ST2310 there are only HDMI, DVI-D and VGA inputs. I can run an HDMI cable from the rMBP to the ST2310 and get a 1080P 30 hz. When I run a DP to HDMI adapter cable with the same HDMI cable to the ST2310, there is no signal detected on the ST2310.
Maybe this is an invalid configuration, but I was hoping not to have to use the HDMI output from the rMBP.
Also, if I do use the HDMI output from the rMBP (with the rMBP lid closed), I can get the extended monitor, but all the Desktop icons are on the far right of the secondary or extended monitor. No matter what I do with the "Arrangement" under the rMBP Preferences, I can't get just a blank extended screen on the secondary monitor. Any fix for that?
did you try BOTH DP ports for the output attempt from the P2415Q? apparently one is input and the other output. You probably know this, but I just wanted to make mention of it JUST in case....
did you try BOTH DP ports for the output attempt from the P2415Q? apparently one is input and the other output. You probably know this, but I just wanted to make mention of it JUST in case....
Well, I have the mDP to DP cable plugged into the DP in, and the DP to HDMI cable plugged into the DP out, and I'm pretty sure I haven't mixed them up. I don't think the mDP cable from the Mac plugged into the DP Out on the monitor would work, anyway, would it?
You're fine. I thought maybe you were using a mDP to mDP and both of your DP ports were empty on the monitor.
Sorry, but I have no more advice that could help you...
You're fine. I thought maybe you were using a mDP to mDP and both of your DP ports were empty on the monitor.
Sorry, but I have no more advice that could help you...
Well, thanks very much for trying. Somehow I think the DP output from the monitor (as opposed to one from a computer) won't convert a signal to HDMI. Since there is no DP input option on the old Dell monitor I'm trying to use as a secondary monitor, it may not be possible to daisy chain them. The diagram on the P2415Q manual assumes you have another DP input monitor, and one that is DP 1.2 and MST compliant, as well.
I'll probably have to go with the HDMI output from the rMBP to the old Dell monitor and see if anyone comes up with a way to get it to extend as a blank screen from the P2415Q instead of giving what is essentially a very large screen with the left side Dock on the left of the P2415Q monitor and the Desktop icons on the far right of the ST2310.
What's the point of a 2560x1440 screen from a 4k monitor if it isn't HiDPi? It's not different than the Thunderbolt ACD. The point of me wanting 2560x1440 is for the HiDPi.
So basically, the only HiDPi mode available on the 27 or 24 is 1080p?
HDMI text issue compared to displayport
Hello,
I just hooked up my new rMBP to a dual P2715Q setup - the first through a Thunderbolt->displayPort connection and the second through a HDMI->HDMI connection.
I am aware that running the first at 4K @ 60Hz eats up all the Thunderbolt display capacity, and that HDMI is the available method for connecting the second display.
I also expected the HDMI connection to be 30 Hz, and it is. Animations do look more sluggish due to the slower refresh rate, but that doesn't bother me for text editing.
My problem is that the text looks noticeably blurry to me on the HDMI connection as compared to the displayPort. The same window on both screens looks much more stable to me on displayport. This only seems to matter when looking at text. Images are crisp and beautiful on both displays, but the text is majorly different.
Is anyone out there experiencing this, and has anyone found a solution to improve text on HDMI? My cable says HDMI 1.3, for what it's worth.
Thanks
Hello,
I just hooked up my new rMBP to a dual P2715Q setup - the first through a Thunderbolt->displayPort connection and the second through a HDMI->HDMI connection.
I am aware that running the first at 4K @ 60Hz eats up all the Thunderbolt display capacity, and that HDMI is the available method for connecting the second display.
I also expected the HDMI connection to be 30 Hz, and it is. Animations do look more sluggish due to the slower refresh rate, but that doesn't bother me for text editing.
My problem is that the text looks noticeably blurry to me on the HDMI connection as compared to the displayPort. The same window on both screens looks much more stable to me on displayport. This only seems to matter when looking at text. Images are crisp and beautiful on both displays, but the text is majorly different.
Is anyone out there experiencing this, and has anyone found a solution to improve text on HDMI? My cable says HDMI 1.3, for what it's worth.
Thanks
Check this out
http://embdev.net/topic/284710
It could be the issue you're experiencing, I have always had to use this fix to use HDMI monitors properly. Not sure about P2715Q 4k, but your observations sounds like issues I always seems to have with HDMI monitors.