So now everything is okay with the latest nVidia drivers and installing the Dell Monitor driver?
Do you have any issues with power save mode / turning off the screen while the PC is still running, then turning it back on? I just tested the latest beta nVidia drivers - during the few first reboots I had no split screens, but definitely issues when turning the display off and on again.
I just did what you asked... MASSIVE issues.
What I have is two dell monitors in dual set up.
I turned off the off the UP2414Q and it took me 10 minutes of trying different settings to get two monitors on again at the same time!
Obviously neither of the 4K monitors was tested
I missed this, as usually I have my workstations set up to be on all the time, no power save etc.
This is a big issue.
Hi Folks. I just wanted to note that I too am having similar Multi-stream transport stability problems. I have now had the UP3214Q for about a week.
1. Resume from Sleep - Monitor will not wake (tells me that there is no signal). This occurs frequently, but not 100% of the time. Requires rebooting everything to fix. Turning monitor off / on, unplugging Display Port etc does not fix.
2. Windows 8.1-64 Login Screen - nearly always shows only half of the screen (usually the right hand side). I can CTRL+ALT+DEL, type my password (although I can't see my PW or account since it is clipped or on the non-visible LHS), Windows desktop loads and the monitor will go dark and usually (>90%) come up in the full 3840x2160x60hz mode. Sometimes it does not and just goes dark... Have to follow the steps outlined in (1) to fix.
3. Resolution switches - Gaming - something that is a bit more rare, but similar in what bugs are surfacing - is that there are times that I exit a game and when I get back to Windows, the monitor goes dark indicating that there is no signal. Again, power cycling everything is required.
OS: Windows 8.1 Pro 64bit.
SW: Dell Display Manager 220.127.116.110
SW: NVIDIA Driver 331.65 (NOTE: there are a few slightly newer drivers like 331.93... I will try these, although I don't know if there are bits I there that do anything for MST etc)
HW: EVGA GeForce GTX 780 Hydro (3GB)
HW: Using the Dell-Supplied Display Port cable
HW: Asus ROG Maximus VI Formula (16 GB, 4770k)
I know that this is still a bit of a leading edge configuration (4k, 60hz in general) but I had assumed that there would be more stability after Sharp led the way a year ago or so...
Just thought to add my hardware profile for reference as well.
OS: Windows 8.1 Enterprise 64bit. (fully updated)
SW: Dell Display Manager 18.104.22.1680 I don't have this installed
SW: NVIDIA Driver 331.82
HW: ASUS GeForce GTX 760 Direct CUII (2GB)
HW: i7 3770k
HW: 32Gb Ram
HW: MSI GD80a Z77
HW: Using the Dell-Supplied Display Port cable
I did open a service request - took more than an hour on the phone for something I had already written down but couldn't submit because my service tag gets misidentified (first it was an out of warranty Inspiron 14, now it's the correct device, but still out of warranty). I'm supposed to get a replacement screen, but was told it would take a bit of time due to the holidays and all (over here in Europe, last week had exactly two working days).
I've also filed with the manufacturer of my nVidia card (Gigabyte) and NUC (also Gigabyte) - no results with anyone so far.
I suspect MST kicks in on a driver level, since the picture problem only appears at the login screen - then again I wonder whether daisy chaining shouldn't work without drivers? I do think it's MST, too, since the problem only happens with DP in 1.2 mode. I feel reminded of problems you sometimes get with dual link DVI.
just as a sake of information... I thought I would add this observation from my end.
I changed the way the monitors connect to the pc and surprisingly I can turn off the 4k monitor and turn it back on, with no issue and so far, I haven't had a half screen logon either.
Originally igp was disabled and I was driving both my ultrasharp from gtx 760 (1200p dvi and the 4k dell supplied mini dp cable)
Now I have enabled igp at bios with peg to init first, so in essence each gpu runs one monitor.
gtx 760 now runs the 4k
igp hd4000 runs the 1200p
A few more updates: There is a new version of Display Manager out - from 22.214.171.1240 to 126.96.36.1992. I have not looked for the change log.
I have ug'd my NVidia driver to the beta r331 (331.93) version - no changes in the behavior. It would be great from someone at Dell to eventually dig into this post a bit - spending >$3k on a monitor and not having it be nearly perfect is just a bummer.
I have this issue as well. I don't think this has been mentioned yet but if you're logged in Windows and only half screen is displayed, logging out and logging in seems to fix it. No need to restart the computer.
The other data point I want to contribute is that the Asus 32" 4K does not have this issue for the 3 weeks that I had it. The Asus and Dell both share the Sharp panel so it must be a monitor firmware issue. Another behavioral difference is that the Asus will only display half screen while in the bios, then full once in Windows. Dell displays full screen on both, when it works. Everything is in the context of DP 1.2 / MST mode.
I question how this issue passed Dell QA. When it works, the monitor is spectacular and definitely worthy of a 2014 technology. I certainly hope this issue is resolved ASAP.