No 60hz with Dell UP3214Q and GTX 980

RutgerG · Mar 30, 2015

Hi folks!

I recently installed yosemite on my X99 platform, so far so good. Verry happy with it.

Except for one thing: I can't get my GTX 980 to output full 3840x2160 (UHD) on 60hz. Only 30hz works.
But working with that refresh rate is not really pleasent..

I'm running 10.10.2 and installed the web drivers and the OS X cuda driver.
Enabled displayport 1.2 on the monitor and connected it with this cable.

What's also strange, is that everytime I switch to "Nvidia Web Driver" in the Nvidia settings, it returns to; "OS X Default Graphics driver" after rebooting.

Thanks!!

cccip · Mar 30, 2015

Currently there is no way to get 4k@60Hz on Maxwell cards under 10.10.2
Previous 10.10.1 can do it

Pieroman69 · Mar 31, 2015

cccip said:
Currently there is no way to get 4k@60Hz on Maxwell cards under 10.10.2
Previous 10.10.1 can do it

From what I read around, this is true only for MST, SST monitors seem to work. But yeah, since the UP3214Q is MST that is indeed the sad truth.

RutgerG · Mar 31, 2015

Thanks guys Didn't know that.. A sad truth indeed.

Is there a way to downgrade to 10.10.1 or should I just wait for 10.10.3?

RutgerG · Apr 1, 2015

I'll reinstall the system, that's probably the safest way.

Can't really find a usable download to yosemite though..

Tips?

Snowy · Apr 1, 2015

Pieroman69 said:
From what I read around, this is true only for MST, SST monitors seem to work. But yeah, since the UP3214Q is MST that is indeed the sad truth.

So a Dell P2715Q would work ootb with a GTX760? no issues? I am about to get the monitor but need to make sure I don't get any surprises (sleep/wake, filckering, boot, 30hz, etc...)

Thanks

RutgerG · Apr 1, 2015

Snowy said:
So a Dell P2715Q would work ootb with a GTX760? no issues? I am about to get the monitor but need to make sure I don't get any surprises (sleep/wake, filckering, boot, 30hz, etc...)

Thanks

I think it should work! The UP3214Q is of course a different monitor with other specs, but both of them are 4K mst. Just keep in mind that you probably won't get 60hz on 10.10.2. I'm running it with 30hz now, and although I got very powerful system, everything feels a bit slow en sluggish on this refresh rate.

Koubi · Apr 22, 2015

Pieroman69 said:
From what I read around, this is true only for MST, SST monitors seem to work. But yeah, since the UP3214Q is MST that is indeed the sad truth.

Is it true that SST monitors can do 4k @60Hz in 10.10.3 ?
Can anyone confirm this?

i have a Dell P2715Q 4K SST monitor and I'm about to get GTX 980.

a guy on ****** replied me that his setup works:

"Yes, I'm running 10.10.1 with a 980 and Asus PB287Q. 4k @ 60Hz works fine using the NVIDIA web driver. It actually doesn't give me any choice between 30/60Hz in the displays panel, but the System Information tool shows it is 60Hz.
edit:
Here is what System Information shows:
NVIDIA GeForce GTX 980:
Chipset Model: NVIDIA GeForce GTX 980 Type: GPU Bus: PCIe Slot: Slot-1 PCIe Lane Width: x16 VRAM (Total): 4095 MB Vendor: NVIDIA (0x10de) Device ID: 0x13c0 Revision ID: 0x00a1 ROM Revision: VBIOS 84.04.31.00.83 Displays: DELL 2405FPW: Resolution: 1200 x 1920 @ 60 Hz Pixel Depth: 32-Bit Color (ARGB8888) Display Serial Number: M675458G11AS Mirror: Off Online: Yes Rotation: 90 ASUS PB287Q: Resolution: 3840 x 2160 @ 60 Hz Pixel Depth: 32-Bit Color (ARGB8888) Main Display: Yes Mirror: Off Online: Yes Rotation: Supported Connection Type: DisplayPort Television: Yes
(previous edit didn't show 4k as I had scaling enabled...)"

randombrain · Apr 24, 2015

Koubi said:
Is it true that SST monitors can do 4k @60Hz in 10.10.3 ?
Can anyone confirm this?

Yes, I have P2415Q (just got it today). I'm running 10.10.3 with web driver 346.01.02f02 (latest), using GTX 750 Ti. I can get all of the following resolutions at 60Hz via DisplayPort SST:
1504x846 (screenshot size: 3008x1692)
1920x1080 (screenshot size: 3840x2160)
2304x1296 (screenshot size: 4608x2592)
2560x1440 (screenshot size: 5120x2880)
3008x1692 (screenshot size: 6016x3384)

Koubi · Apr 27, 2015

randombrain said:
Yes, I have P2415Q (just got it today). I'm running 10.10.3 with web driver 346.01.02f02 (latest), using GTX 750 Ti. I can get all of the following resolutions at 60Hz via DisplayPort SST:
1504x846 (screenshot size: 3008x1692)
1920x1080 (screenshot size: 3840x2160)
2304x1296 (screenshot size: 4608x2592)
2560x1440 (screenshot size: 5120x2880)
3008x1692 (screenshot size: 6016x3384)

That's great to hear! :clap:

I'll be getting my 780 Ti back from the repair in a couple of weeks. I'll try asap and post results here

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