DPHPDMA Series - Disable DisplayPort HotPlug [eng]



Information / Order

All Items is stocked. 28,Oct,2019
DPHPDMA ORDER

What is this?

"How to disable displayport sleep?"

This hardware is can disable DisplayPort HotPlug Detect signal.
Connecting this hardware prevents destruction of the desktop design caused by turning off the sub monitor and screen power saving when using multiple monitors.
You can improve disconnection of the DisplayPort when returning to sleep.


Mechanism

Monitor Disables the unplug event sent to hot plug detection when the power is turned off, and maintains the hot plug state.
Even when the monitor power is turned off, the GPU is disguised as if the monitor is in the active state.

Also, when the monitor power is turned on again, change the re-plug event to an IRQ event and resend it to notify the GPU of the status change of the monitor.
This makes it possible to return from the monitor standby state.

How to Connect

▼DPHPDMA

Please connect the male connector to the PC side. Never connect in the reverse direction.

▼DPHPDMA F/UART

Please check the connection destination. Never connect in the reverse direction.

What is Type? "Stick" or "Box"


DPHPDMA (Stick)DPHPDMA F/UART (Box)
Signal Mode ChangeSolderingToggle Sw
Need USBCableNoUSB microB (*1)
Need DisplayPortCable1
To Monitor
2
To PC and To Monitor
UART Control
(Windows App)
Need USB-UART Converter and SolderingUSB-UART bridgeIC included
Size51mm x 24mm45mm x 41mm(incl. SW knob)

(*1) USB connection from PC is necessary. Because it is active checking of PC, it does not operate with USB with power supply only.

The stick type has some restrictions.
In the stick type, the length of the male connector is a bit short.(1mm~2mm)
Depending on the thickness of the graphic card's bracket or PC case, it may not be connected correctly.

And neighboring DisplayPort receptacles graphics card(ex. DP-HDMI-DP-DP), it is not possible to connect two DPHPDMA simultaneously. It interferes because the width of the main body is large.
In this case, please use box type on one side.

Testing Environment

OS:
Windows 10 Pro 64bit ver.1703

Monitor:
DELL U2713H / 2560x1440 60Hz
DELL U2718Q / 3840x2160 60Hz
※If you enable MST (Multi Stream Transport) on your monitor, it will not work properly even if you are not daisy-chained.

GPU:
NVIDIA GeForce GTX 1050Ti (388.71)
AMD Radeon HD7770 (17.7.2)
Intel HD Graphics 4600 Core i7 4670K/GigaByte GA-Z87X-UD4H (20.19.15.4531)

User Reports: DPHPDMA

Worked
AMD Radeon RX 470 + LG 27UK650-W (3840x2160/60Hz/RGB 10bit/HDR)
AMD Radeon RX 470(Kurotoshiko RD-RX470-E4GB)+ LG 29UM68-P
AMD Radeon RX 480 + LG 27UD68
AMD Radeon RX 480 + ASUS MG279Q (144Hz OK)
AMD Radeon RX 550 (XFX RX-550P4TFG5)+ DELL U2717D
NVIDIA GeForce GTX 1050 Ti + DELL U2718Q (3840x2160 60Hz OK)
NVIDIA GeForce GTX 1050 Ti (MSI GeForce GTX 1050 Ti 4G OC VD6191) + LG 43UD79-B (3840x2160/60Hz/RGB/10bpc)
NVIDIA GeForce GTX 1060 (MSI GTX 1060 GAMING X 6G) + DELL U2415
NVIDIA GeForce GTX 1060 (MSI GeForce GTX 1060 AERO ITX 6G OC) + DELL U2717D
NVIDIA GeForce GTX 1080 Ti (GIGABYTE AORUS GeForce GTX 1080 Ti) + DELL AW3418DW
NVIDIA GeForce RTX 2080 TI + Acer VG240YP
NVIDIA GeForce RTX 2080 Ti + AOC G2460PG
NVIDIA GeForce RTX 2080 Ti + DELL U2414H
NVIDIA Quadro 600 (ELSA EQ600-1GER) + DELL E2417H
NVIDIA Quadro K2200 + HP Z27q (5K: 5120×2880, 60Hz, 10bit, Use two DisplayPort Cable and two DPHPDMA, Windows10 version1809)
Intel Core i7 4790K + ASUS Z97 DELUXE(on M/B DP) + DELL 3008WFP
Intel Core i7 7700K + ASUS PRIME Z270-A(on M/B DP) + LG 27UD88-W
intel HD Graphics 4000 + PHILIPS 272C4

Not really good
AMD Radeon RX 580 + NEC PA302W
Screen doesnt showup when turning on the monitor again.
NVIDIA GeForce GTX 660 + DELL P2715Q
Turning on the monitor again, can disabled hotplug. But I cannot recover from the power saving.
NVIDIA GeForce GTX 1080Ti (MSI GeForce GTX 1080 Ti GAMING X 11G) + LG 27UD88-W
NVIDIA GeForce GTX 1060 (ASUS STRIX-GTX1060-O6G-GAMING) + LG 27UD88-W
The monitor does not appear at a specific time.
It works when reconnecting cable.
NVIDIA GeForce RTX 2080Ti (MSI GTX2080TI SEAHAWK) + 32UL950-W
*There was no details from the user.
NVIDIA GeForce RTX 2070 SUPER (ASUS DUAL-RTX2070S-O8G-EVO) + BenQ PD2700Q
Screen doesnt showup when turning on the monitor again.
Intel Core i7 8086K on M/B DP + NEC PA301W
NVIDIA GeForce GTX 970 + NEC PA301W
*There was no details from the user.

User Reports: DPHPDMA F/UART

Worked
AMD Radeon RX 580(Sapphire Nitro+ Radeon RX580 special edition) + EIZO CX240
AMD Radeon RX 580(Asrock PHANTOM GXR RX580 8G OC) + LG 34UC79G-B (144Hz OK)
NVIDIA GeForce GTX 1050 Ti + DELL U2718Q (3840x2160 60Hz OK)
NVIDIA GeForce GTX 1080 Ti(COLORFUL iGame GTX1080Ti Neptune W)+ DELL S2716DG
Mac mini Late 2009(Mac OS X 10.9.5) + NEC Display MultiSync LCD-EA244WMi(FORCE MODE)

Not really good
AMD Radeon RX480 + DELL P2715Q
Turning on the monitor again, can disabled hotplug. But screen doesnt showup when Changed Input Select.
AMD Radeon RX 580(Asrock PHANTOM GXR RX580 8G OC) + ASUS MG279Q
Turning on the monitor again, can disabled hotplug. But I get a "Windows can not recognize the monitor resolution" Windows error when reflesh rate is 144Hz.

DownLoad, etc...


UART Control Application - HPD Opera 1.10
Contents of the update June 20, 2019 ver 1.10
1. When window is activated by pressing Ctrl key, window moves to mouse cursor position.
2. Double-click COMPort combo box to update port list.
3. Main window display has been changed from double-click tasktray icon to single-click.

*Old version HPD Opera 1.00

FTDI USB-UART bridge Interface VCP Driver
It is a necessary driver to operate with software. This machine will work without installing the driver.

Attention / Disclaimer

This machine is equipped with software (OS, application, graphic board driver)
Depending on the configuration of hardware (monitor, graphic board, etc.), it may not operate properly.

This machine does not promise resolution improvement caused by monitor power off, etc., improvement of desktop design collapse etc.

This unit is a special device, which is completely different from the normal connection method. The manufacturer of this machine is not responsible for any problems, troubles, breaks, etc. caused by using this machine. Please note.

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