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08-04-2018, 11:41 AM | #1 |
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Dell UP3214Q stuck at 30hz over DP!
Hello,
I have a Dell UP3214Q, 4k screen connected via DisplayPort to a D6000 (over USB-C). Windows will only allow selection at 30hz in 4k resolution! I have tried: A different display port cable A different display port connection on the monitor The other display port on the d6000 Disconnecting everything else Changing the default display driver to the Dell ones (for the monitor) Re-installing windows Checking the monitor is in DP1.2 enabled mode. I also tried the monitor on a different computer with DisplayPort, and it works fine at 60hz so I do not thing its the monitor. Any ideas anyone! Thanks Richard Last edited by richard_jones; 08-04-2018 at 11:43 AM. Reason: extra things tried |
08-06-2018, 10:50 AM | #2 |
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Hello Richard,
That is peculiar: the monitor does NOT show 4Kp60 as supported in the monitor EDID information. Here is the exhaustive list of mode reported supported: EDID DATA (v1.4) ========= Monitor Type : DEL4093 (DELL UP3214Q) Monitor ID : K3R904B2288P Manufactured : 2014.45 Serial Number: xxxx Display Parameters ================== Input type : Digital Color bit depth : 10 bits per Primary Color Video interface : DisplayPort is supported Max image size : 70x39cm (31.5" diagonal, 16:9 ratio) Gamma : 2.200 [...] Range Limits ============ V Rate : 29 - 75 Hz H Rate : 31 - 140 KHz Max Clock Rate : 300 MHz No secondary timing curve Preferred Mode : 3840x2160x24@30 [...] Display Modes ============= 640x480x24@60 640x480x24@75 720x400x24@70 720x480x24@60 720x576x24@50 800x600x24@60 800x600x24@75 1024x768x24@60 1024x768x24@75 1152x864x24@75 1280x720x24@50 1280x720x24@60 1280x800x24@60 1280x1024x24@60 1280x1024x24@75 1600x1200x24@60 1680x1050x24@60 1920x1080x24@24 1920x1080x24@50 1920x1080x24@60 1920x1200x24@60 2560x1440x24@60 3840x2160x24@30 -> 1 extension blocks present -> Extension 0 : 02 : EIA/CEA 861 standard Timing Extension block is valid Checksum Valid : 0xa3 Could you cross-check the monitor settings? What type of cable do you have between the dock and the monitor? (connector type on each end) The reason I'm asking is the EDID is consistent with HDMI 1.4 so used with HDMI or DP++ modes. 4Kp60 would be higher than the advertised max clock rate of 300MHz. So both are consistent. Unless the EDID allows higher, we won't try higher. Kind regards, Alban
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Alban Rampon Senior product manager, universal docking stations and accessories "DisplayLink is proud to be a Synaptics brand." Where to download the latest DisplayLink drivers How to clean up a corrupted installation How to report issues to DisplayLink for a speedy resolution |
08-06-2018, 11:22 AM | #3 |
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Hi Alba,
Thanks for coming back to me. I have two DisplayPort cables, a full size DP to DP, and a full size DP to miniDP. I tried both. See the attached images that show how this is connected. This shows the method of connection and the resolution/refresh as reported by the monitor. You can also see the monitor is on DP1.2 mode. Since my previous post I did some more testing. I bought a Thunderbolt to DP adaptor, and it works at 4k60hz (obviously on the same monitor/computer), which is odd based of you saying the EDID is wrong. Thanks Richard |
08-06-2018, 01:24 PM | #4 |
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Hi again Richard,
It's getting increasingly peculiar then. The EDID received may be different. Would you please be able to connect the monitor in a way making it work at 4Kp60 and use a utility to capture the EDID you get? If so, the utlity I could recommend is DumpEDID. DumpEDID.exe > c:\temp\edid.txt gives a text file with the output I could look at. If you need more details on how to run that, do not hesitate to ask. Kind regards, Alban
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Alban Rampon Senior product manager, universal docking stations and accessories "DisplayLink is proud to be a Synaptics brand." Where to download the latest DisplayLink drivers How to clean up a corrupted installation How to report issues to DisplayLink for a speedy resolution |
08-06-2018, 03:01 PM | #5 |
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Hi,
No problem, So I reconnected the Thunderbolt to DP adaptor, then DP to DP, 4k60 works. EDID dump attached, along with a photo of the monitor status. Thanks |
08-06-2018, 03:20 PM | #6 |
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PS,
In case it helps find attached the same report while using Display Link, Whats odd is that I see the connected has 3840 X 2160 60 Hz! Active : Yes Registry Key : DISPLAY\DEL4093\b&b4d5d57&0&UID257 Monitor Name : DELL UP3214Q Serial Number : K3R904B2288P Manufacture Week : 45 / 2014 ManufacturerID : 44048 (0xAC10) ProductID : 16531 (0x4093) Serial Number (Numeric) : 842545232 (0x32383850) EDID Version : 1.4 Display Gamma : 2.20 Vertical Frequency : 29 - 75 Hz Horizontal Frequency : 31 - 140 KHz Maximum Image Size : 70 X 39 cm (31.5 Inch) Maximum Resolution : 3840 X 2160 Support Standby Mode : No Support Suspend Mode : No Support Low-Power Mode : Yes Support Default GTF : No Digital : Yes Supported Display Modes : 720 X 400 70 Hz 640 X 480 60 Hz 640 X 480 75 Hz 800 X 600 60 Hz 800 X 600 75 Hz 1024 X 768 60 Hz 1024 X 768 75 Hz 1152 X 864 75 Hz 1280 X 800 60 Hz 1280 X 1024 60 Hz 1280 X 1024 75 Hz 1680 X 1050 60 Hz 1600 X 1200 60 Hz 1920 X 1080 60 Hz 1920 X 1200 60 Hz 3840 X 2160 60 Hz |
08-06-2018, 03:43 PM | #7 |
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Thank you,
You have a different list here... Supported Display Modes : 720 X 400 70 Hz 640 X 480 60 Hz 640 X 480 75 Hz 800 X 600 60 Hz 800 X 600 75 Hz 1024 X 768 60 Hz 1024 X 768 75 Hz 1152 X 864 75 Hz 1280 X 800 60 Hz 1280 X 1024 60 Hz 1280 X 1024 75 Hz 1680 X 1050 60 Hz 1600 X 1200 60 Hz 1920 X 1080 60 Hz 1920 X 1200 60 Hz 3840 X 2160 60 Hz There's no 4Kp30 and there's no 2560x1440, most notably. Looking at this monitor user guide, there's a * about its implementation pages 10 and 11. * To display 3840 x 2160 at 60 Hz, DP1.2 must be enabled and the DP source’sIt looks like it is using dual streams to achieve 4Kp60 instead of a single stream, hence why it requires DP1.2 with MST (Multi-Stream Transport). The product is DisplayPort certified, without MST as MST is mostly used to split pixels (daisy chaining displays), not join them up in one panel. The reason for the different EDID is because of the second part of that sentence: DisplayID. That's a different EDID format. On page 36, it says it can handle HBR2... That's fast enough to handle a 4Kp60 over a single stream (or it wouldn't be able to handle it across split screens as MST doesn't create any bandwidth). To sum up, this is unfortunately expected because of the requirements of 4Kp60 for this display don't match what is available on the docking station. Kind regards, Alban
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Alban Rampon Senior product manager, universal docking stations and accessories "DisplayLink is proud to be a Synaptics brand." Where to download the latest DisplayLink drivers How to clean up a corrupted installation How to report issues to DisplayLink for a speedy resolution |
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