This kind of makes sense, as theirs no need to have OSX control the screens, brightness and settings...perhaps?
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Dell P2715Q and P2415Q 4K IPS Displays
- Thread starter VirtualRain
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This kind of makes sense, as theirs no need to have OSX control the screens, brightness and settings...perhaps?
Well, my understanding is that OSX doesn't support it in any case, so there's probably no downside in disabling it. I'm just trying to make sure that it's the right solution for the monitor freeze issue. So far, I'm extremely happy with these monitors with this problem being my only remaining concern.
I checked the evenness of my monitor after it had been on for 2 hours. There are three vertical stripes of mild yellowing, only noticeable when showing an even light color across. With a picture or darker color background it is not visible. Since this is not my main photo edit monitor, that is fine. The Dell factory report had everything at 99 or 100%, and I have calibrated using my Spyder4 Pro.
No dead or live pixels, all 8.27 million.
No dead or live pixels, all 8.27 million.
MBPr 13"
So, just received my Dell 2415q 4k monitor and plugged it into my MBPr 13" via the included display port to mini display port cable. Using SwitchResX I set a custom resolution of 3840x2160 with a pixel clock of 450MHz. Rebooted and the new display runs perfectly at 51Hz with a 1080p HiDPi setting. Very pleased, since I was anticipating a clunky UI with the lower refresh rate. Glad it's not really noticeable (for me anyway), and stoked that I can't see any pixels which is all I was after since adapting to the retina screen of the macbook.
-Seth
So, just received my Dell 2415q 4k monitor and plugged it into my MBPr 13" via the included display port to mini display port cable. Using SwitchResX I set a custom resolution of 3840x2160 with a pixel clock of 450MHz. Rebooted and the new display runs perfectly at 51Hz with a 1080p HiDPi setting. Very pleased, since I was anticipating a clunky UI with the lower refresh rate. Glad it's not really noticeable (for me anyway), and stoked that I can't see any pixels which is all I was after since adapting to the retina screen of the macbook.
-Seth
Thanks so much for the update! I've been waiting for someone to post this exact experience. Woohoo!!
P2715Q response time
Just bought this for pro audio use on a late 2013 Mac Pro. Currently running 10.9.5 on the MP and connecting to the monitor via mDP plugged into it's own TB bus. "Fast" response is selected in the monitor menu.
Not sure what else to try. Any thoughts? This is painfully slow for my needs. I have a 50" Vizio 4K TV that has a better input lag time. Would Yosemite fix this?
Thanks for any input you might have.
Just bought this for pro audio use on a late 2013 Mac Pro. Currently running 10.9.5 on the MP and connecting to the monitor via mDP plugged into it's own TB bus. "Fast" response is selected in the monitor menu.
Not sure what else to try. Any thoughts? This is painfully slow for my needs. I have a 50" Vizio 4K TV that has a better input lag time. Would Yosemite fix this?
Thanks for any input you might have.
What kind of lag are you seeing on an audio app? I'm running realtime 2D and 3D spectrograms, VU meters, and a spectrum analyzer all at the same time at native rez and not seeing any lag. I've got the hex D500 nMP and an older 5.1 with a GTX 670. Neither has noticeable lag, but there're both on Yosemite.
Hi xav8tor,
The main concern I have is that the mouse / keyboard input lags significantly regardless of which app I'm running. The goal with the 4K display was more screen real estate for apps such as AVID's Pro Tools and Logic, etc. Sorry if that wasn't clear.
As I said, by comparison, the Vizio 50" 4k TV I bought is significantly faster. Using a two display setup with the Dell and the Vizio (again, both on their own TB bus on the nMP). Tried switching out the cables. Couldn't get the provided DP to mDP cable to even work. Using HDMI to get to the 4k TV.
Thanks again for any insight.
The main concern I have is that the mouse / keyboard input lags significantly regardless of which app I'm running. The goal with the 4K display was more screen real estate for apps such as AVID's Pro Tools and Logic, etc. Sorry if that wasn't clear.
As I said, by comparison, the Vizio 50" 4k TV I bought is significantly faster. Using a two display setup with the Dell and the Vizio (again, both on their own TB bus on the nMP). Tried switching out the cables. Couldn't get the provided DP to mDP cable to even work. Using HDMI to get to the 4k TV.
Thanks again for any insight.
Dell P2715Q and P2415Q 4K IPS Displays
Unless there are known issues with your key software on Yosemite, I would upgrade. 4K is pretty new tech and changing with every new monitor that hits the market.
Having said that, these Dell's use IPS panels which do have a slightly more delayed response than cheaper panels like that in your TV, but it should be imperceptible in anything but high frame rate gaming. If you've got noticable lag moving a mouse pointer or window around the desktop, that's not just the display... Something is going on there but it could be your software/OS/drivers, GPU hardware, display combination and configuration, cables, or your you're simply cursed with Superman level lag detection.
It's probably worth doing some systematic trouble-shooting, starting with a fresh OS X Yosemite install with absolutely no other apps installed, and the start looking at trying different display combinations. I'm afraid you've got some work to do if you're going to get this resolved or determine with certainty it's the Dell that's the problem.
Unless there are known issues with your key software on Yosemite, I would upgrade. 4K is pretty new tech and changing with every new monitor that hits the market.
Having said that, these Dell's use IPS panels which do have a slightly more delayed response than cheaper panels like that in your TV, but it should be imperceptible in anything but high frame rate gaming. If you've got noticable lag moving a mouse pointer or window around the desktop, that's not just the display... Something is going on there but it could be your software/OS/drivers, GPU hardware, display combination and configuration, cables, or your you're simply cursed with Superman level lag detection.
It's probably worth doing some systematic trouble-shooting, starting with a fresh OS X Yosemite install with absolutely no other apps installed, and the start looking at trying different display combinations. I'm afraid you've got some work to do if you're going to get this resolved or determine with certainty it's the Dell that's the problem.
Hi VirtualRain,
Thanks so much for taking the time to respond. Here are my hardware specs:
Late 2013 nMP - 3GHz 8-core Intel Xeon E5, 32GB RAM, AMD FirePro D500 (3072MB) graphics card
OS X 10.9.5 - won't be able to update until February due to project schedules.
Having all sorts of fun starting the computer... got caught in a restart loop earlier today - computer kept restarting just after the white / grey "apple" screen. I guess other folks have had startup issues with this Dell attached. Can't remember what finally worked...
Adding the startup puzzlement to the original lag time complaint... might have to return this thing.
My friend uses one of the new LG widescreen displays (even has Thunderbolt!) - I may end up going that route. Shame because the Dell is the perfect size for what I need and the color / clarity is perfect.
Thanks so much for taking the time to respond. Here are my hardware specs:
Late 2013 nMP - 3GHz 8-core Intel Xeon E5, 32GB RAM, AMD FirePro D500 (3072MB) graphics card
OS X 10.9.5 - won't be able to update until February due to project schedules.
Having all sorts of fun starting the computer... got caught in a restart loop earlier today - computer kept restarting just after the white / grey "apple" screen. I guess other folks have had startup issues with this Dell attached. Can't remember what finally worked...
Adding the startup puzzlement to the original lag time complaint... might have to return this thing.
My friend uses one of the new LG widescreen displays (even has Thunderbolt!) - I may end up going that route. Shame because the Dell is the perfect size for what I need and the color / clarity is perfect.
Unless there are known issues with your key software on Yosemite, I would upgrade. 4K is pretty new tech and changing with every new monitor that hits the market.
Having said that, these Dell's use IPS panels which do have a slightly more delayed response than cheaper panels like that in your TV, but it should be imperceptible in anything but high frame rate gaming. If you've got noticable lag moving a mouse pointer or window around the desktop, that's not just the display... Something is going on there but it could be your software/OS/drivers, GPU hardware, display combination and configuration, cables, or your you're simply cursed with Superman level lag detection.
It's probably worth doing some systematic trouble-shooting, starting with a fresh OS X Yosemite install with absolutely no other apps installed, and the start looking at trying different display combinations. I'm afraid you've got some work to do if you're going to get this resolved or determine with certainty it's the Dell that's the problem.
I have two Apple Thunderbolt Display's with my Late-2013 nMP.
Sounds like it would be best to wait this out until some more hardware and software upgrades are available, and maybe (gasp) Apple would come out with a 4K TB display update (unlikely).
Does that sound about right? Or is the beauty of the 4K really worth the update?
I know retina displays are beautiful, I use a MBP retina as well as my mobile devices. But I don't exactly gasp at the ugliness of my 2550x1440 displays today. I think compatibility issues and glitches with startup would irk me to no end, since I have none of those today with the Apple displays.
Sounds like it would be best to wait this out until some more hardware and software upgrades are available, and maybe (gasp) Apple would come out with a 4K TB display update (unlikely).
Does that sound about right? Or is the beauty of the 4K really worth the update?
I know retina displays are beautiful, I use a MBP retina as well as my mobile devices. But I don't exactly gasp at the ugliness of my 2550x1440 displays today. I think compatibility issues and glitches with startup would irk me to no end, since I have none of those today with the Apple displays.
Seth,
Curious which OS you are running? Wondering if I could use SwitchResX to improve the refresh rate on my late 2013 nMP running 10.9.5. Currently only getting a 30Hz connection.
Thanks!
Curious which OS you are running? Wondering if I could use SwitchResX to improve the refresh rate on my late 2013 nMP running 10.9.5. Currently only getting a 30Hz connection.
Thanks!
If i understand everything right, you should in OSD settings of your monitor change input source to dp 1.2, this will enable 60Hz refresh rate. After you can tune with SwitchResX
Running Yosemite, but from what I've read, SwitchResX is what everyone was using to utilize 4k@50+ Hz on mavericks. The the key is using mini display port to display port through thunderbolt. Your hardware should easily support a faster refresh rate, being as my machine has integrated graphics and can handle the retina display and the 4k at full resolution. SwitchResX should help
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Running Yosemite, but from what I've read, SwitchResX is what everyone was using to utilize 4k@50+ Hz on mavericks. The the key is using mini display port to display port through thunderbolt. Your hardware should easily support a faster refresh rate, being as my machine has integrated graphics and can handle the retina display and the 4k at full resolution. SwitchResX should help
The Dell 2415q doesn't have an option to enable display port 1.2. I believe it defaults to your connection setup. It does have a mst option that I currently have disabled. It's for attaching a daisy chain monitor via display port.
If you don't have time to update OS X then you really ought to stick with tried and true hardware like Apple TB displays. 4K is bleeding edge and will not settle down and become rock solid for some time yet. It sounds like you can't afford the time to be tinkering with bleeding edge tech. Stick with all Apple.
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This is bizarre. There's no way you should be running at 30Hz. I don't know what to suggest other than an OS X update to Yosemite.
Well, your Vizio is running at 30 Hz., so it looking faster makes no sense. Go with mDP (TB) to the DP on the Dell and upgrade to Yosemite, which has better 4K/UHD support. If that doesn't fix it, try running only the Dell and unplug the TV in case it is somehow interfering. Failing that, I don't know what to say. Aside from a slight warm tint in the upper left corner and one sleep freeze, other than getting used to the scaling options, I've had no issues. Hardware-wise, it was plug and play on both MP's, OS X and Win 7.
Running Yosemite, but from what I've read, SwitchResX is what everyone was using to utilize 4k@50+ Hz on mavericks. The the key is using mini display port to display port through thunderbolt. Your hardware should easily support a faster refresh rate, being as my machine has integrated graphics and can handle the retina display and the 4k at full resolution. SwitchResX should help
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The Dell 2415q doesn't have an option to enable display port 1.2. I believe it defaults to your connection setup. It does have a mst option that I currently have disabled. It's for attaching a daisy chain monitor via display port.
This is correct - my display (Dell P2715Q) doesn't have a menu option to enable display port 1.2 functionality.
Happy to report that after downloading and fussing with SwitchResX, I can get a 60Hz refresh rate on the Dell. Must be a Mavericks issue. Still connected with the same mDP to mDP cable into a TB port (on its own bus) on the nMP.
I can also get 2560x1440 at 60Hz on both the Dell and the Vizio. I swear lag increases a little but I may be crazy. At any rate the extra screen real estate is nice.
Maybe I'm not understanding the hardware / software subtleties of the Vizio, but I'm getting 1080p at 120Hz (according to SwitchResX and the Apple "Display" Pref) and 2560x1440 at 60Hz. In case any of you are interested, the model number on the Vizio is P502ui-B1 (50"). It was recommended for its low lag time (18ms in "game" mode) on the site displaylag.com - here's a link to a recent write-up: http://www.displaylag.com/low-input-lag-hdtvs-gaming-holiday-2014-edition/
So, a happy ending for now... Hopefully everything works when I restart the computer.
Thanks for everyone's help. I'll update as I know more.
Hello. I have a new issue today. When I have my Dell 27 4K plugged into the top port of Bus 1 I get some light snow and the monitor will sometimes flicker on and off. When I move it the Bus 1 but the bottom port of Bus 1 it works perfect. Why would this be?
There's no good reason for that to be happening. Purely speculation, but the main possibilities that come to mind would be a bad cable, a bad socket or internal wiring on your Mac, or the thunderbolt controller on the motherboard is defective.
I just did a SMC Reset (per Apple Tech Support Request) ... will see if this helps.
Shut down the computer.
Unplug the computer's power cord.
Wait fifteen seconds.
Attach the computer's power cord.
Wait five seconds, then press the power button to turn on the computer.
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IPS glow is present off-axis - very similar to the Apple 27" display. There's nothing different about this monitor compared to others I've used.
I haven't tried running a 1080P source through mine so can't comment on the second question.
BTW, the folks at PC Monitors have reviewed the P2415Q...
https://pcmonitors.info/reviews/dell-p2415q/
I think their findings reflect what most of us have already reported. However, it's good to know that the measured performance matches or exceeds the specs and the factory calibration is pretty accurate.
https://pcmonitors.info/reviews/dell-p2415q/
I think their findings reflect what most of us have already reported. However, it's good to know that the measured performance matches or exceeds the specs and the factory calibration is pretty accurate.