57

Your understanding is incorrect. There is a USB hub in your monitor, no different than an external USB hub. You need to connect a USB cable from your computer to the USB in port on your monitor and that will allow USB devices to work from your monitor.


36

The LG27UD88 monitor is indeed a piece of confusing engineering. You have too many options. If your video card does not have the Type-C output and you are using DisplayPort, the DP link does not have the USB capability. The Type-A USB3.1 receptacles will not work unless you connect the LG Type-C port via additional C-C cable (to Type-C host) or C-A cable to ...


33

DisplayPort acts as a PNP device, so turning off the monitor disconnects it from the computer as if it was removed and windows are moved out because Windows forgets this device, until it is turned on again and is "discovered". One solution is to just let the screen go into sleep instead of turning it off. There are ways of programmatically forcing ...


32

Yes, they are different. Display Port is a passive audio/video technology, Thunderbolt is active generic data technology. The hardware inside the cable is necessary to get the full data throughput. A Display Port cable will only carry Video/Audio to an attached monitors*, while a Thunderbolt cable is able to carry all sorts of other data, which is required ...


20

The Wikipedia article on USB-C has a "Alternate Mode protocol support matrix for USB 3.1 Type-C cables, adapter cables and adapters" which indeed shows HDMI 2.0b support for every Alternate mode except HDMI Alt mode. However, this table is split into Passive and Active rows and HDMI appears under Active for DisplayPort, Thunderbolt and even in MHL ...


18

Disable the "DisplayData Channel Command Interface" (DDC/CI) in your monitor settings. As a result Windows will not recognize if you turn off your monitor and your desktop icons stay as they should. I successfully tested this on a Dell monitor! Wikipedia descripes DDC/CI as follows. I'll just leave it at that. There isn't much about it on the net. [...] ...


15

Difference #1 - performance. The comparison chart below illustrates just how efficient Thunderbolt is with handling media files: Difference #2 - compatibility. The image below shows which combinations of Thunderbolt (TB Cable) and Mini DisplayPort (DP Cable) will work (marked green) and will not work (marked red) together: (click to see large picture) ...


15

From LG's website "The USB port on the product functions as a USB hub. Please connect the USB C-C or USB C-A cable to the PC" You will have to connect this cable before those ports will work as a hub! Link to manual (your info on page 17) here


14

From displayport.org/faq: Q. Does DisplayPort also support audio? A. Yes, DisplayPort supports multi-channel audio and many advanced audio features. DisplayPort to HDMI adapters also include the ability to support HDMI audio. I wound up on this page however because my DisplayPort audio wasn't working. After searching many sites, I learned that the video ...


12

Surface Pro 2 ships with either i5-4200U or i5-4300U CPU, both Haswell chips with HD Graphics 4400 GPU. According to Intel, these chips have 4th generation graphics (HD Graphics 4200 and up is 4th, 4000 and 2500 is 3rd) and thus support DisplayPort 1.2. Apart from graphics adapter support, you will need compatible monitors. These monitors should be ...


12

I think I have solved it by removing Hyper-V (came default with Win10 Pro). I'm running windows 10 on a Lenovo T540p laptop and had as many as 7 displays showing up at one time. I ended up removing Hyper-V due to something else (Xamarin development), and noticed my screen blinking once. And this fixed it :) After this I could both open Intel HD Graphics ...


12

HDMI and DisplayPort are completely different from the point of view of the signals that they send down the wires, as well as the connectors that they use. However, a DisplayPort output has the ability to detect when it's connected to a HDMI display, and send HDMI signals down the wire to that display. This only requires a passive adapter or cable with the ...


9

Make the sound icon visible in the menu bar (at the bottom of the Sound system preferences window), then hold Alt ⌥ and click it to view all possible outputs. Sometimes the actual Output window in system preferences doesn't actually display all available options.


9

I actually think I found an answer to this. That was surprisingly fast considering the number of dead ends I saw on forums. User nixda on a different question, Turning DisplayPort monitor off disables monitor completely, says: Disable the "DisplayData Channel Command Interface" (DDC/CI) in your monitor settings. For my Asus LED monitor this meant ...


9

I also had this exact problem. It is for sure related to the Intel drivers. I have a Dell M3800 and went and downloaded the drivers from Dell (they are much older) but it worked. I made sure to rollback, select specific drivers and installed by pointing to the extracted files. More detailed steps (my problem came back after an update so I wanted to write ...


8

I have a Dell U2515H connected via HDMI to an nVidia card. I tried softMCCS and it worked fine. I was able to adjust the backlight brightness from the software. These are the control codes this monitors apparently supports: New control value Restore factory defaults Restore luminance/contrast defaults Restore color defaults Luminance Contrast Select color ...


8

According to this source and also this source, you will not be able to use a Mini Display Port cables instead of Thunderbolt cables. MBA = Mac Book Air.


8

For daisy chaining to work, the laptop itself must be connected via display port to the monitor. You cannot use an HDMI cable as it does not support MST.


7

See the DDC page on Wikipedia : It links to software that provide GUI and command line control of most modern displays.


7

Same problem with Sierra and a Dell P2715Q, here. It seems like a display with no audio shouldn't trigger this, but ¯\_(ツ)_/¯ With the display connected and no headphones, I used the Sound preferences to change the output to Internal Speakers. Now, at least for this user, the MacBook understands that I never want the sound output routed to DisplayPort.


7

No it does not, not sure what those manufacturers are trying to say in the specs. But it is clear 1.2 does not support HDR. Both models also says this: "The HDR Effect helps transform non-HDR content into high quality video that looks like HDR through its picture quality algorithm." No wonder you are confused, maybe contact LG and see what kind of ...


7

This feature allows you to chain multiple Display Port Devices together. DisplayPort v1.2 allows daisy chainable displays to have both a DisplayPort input and a DisplayPort output. This includes multiple monitors, for example. Rather than having two cables coming from your PC, you can daisy chain two monitors and have less clutter and the use of shorter ...


6

I have the Surface Pro and I've it connected to dual monitor with the Zotac DisplayPort. It works perfectly with a resolution of 3840x1080 and apart the surface screen.


6

I've run into this issue as well and I've decided to write a little utility to restore the position and sizes of the windows on each of the screens. I unfortunately have an AMD card so the Nvidia solutions don't work for me. http://www.ninjacrab.com/persistent-windows/


6

On Linux, the first order answer is that it should just work. The I2C signals are carried over the DisplayPort AUX channel, and the video driver should make this transparent. ddccontrol can be problematic because, as normally built (there's a lot of #iftested code) it bypasses the public i2c-dev interface and attempts to control the I2C signals directly. ...


6

Setup = Laptop HDMI out --> HDMI to HDMI cable --> HDMI to DP adapter --> Monitor DP in = Doesn't Work! The computer HDMI cannot send a signal to a monitor DP. Computer DP can always send a signal to a monitor HDMI. That is why you see so many DP to HDMI cables. To do computer HDMI to monitor DP, you would have to invest in one of these converters: https://...


6

HDMI is a clock-less video format, DP uses a clock to keep video in sync. DP adds the clock to the video at the sending device; so a DP-receiving device needs to see a clock on the incoming video, HDMI doesn't. This is why it's very easy with a simple adapter to go from a DP output on a laptop to a HDMI input monitor because the monitor doesn't care about ...


5

This doesn't apply to all Samsung monitors but on my SyncMaster BX2031, I found that if I go to the monitor's built-in menu, go to Setup & Reset and set Magic Return to OFF, I don't have the issue. I think this is Samsung's attempt at saving on system performance by disabling an unused screen. However, I'm not entirely sure if this is the only function ...


5

Guys - This was my entire solution. I had to do all 3 of these things to get it to work. Update your Nvidia Drivers to the latest version and restart your computer Go into each monitor and turn off the DDC/CI ability (DISABLE IT) Follow these instructions: https://sites.google.com/site/ebobster/stuff/displayportblanking This will work for you. I had to ...


5

Active DisplayPort (either normal or mini 1.1 or 1.2) to HDMI converters can go up to 3840x2160@30hz that's 4K@30hz. They use a Parade PS171 chip to achieve this, however it's not exactly plug and play on the Mac, you have to use SwitchResX. I'm told Windows works just fine on the same Mac hardware. (I'm using a 4K 40' Samsung 40HU6500 TV as a display) Also ...


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