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59

You need a HDMI-to-VGA adapter. Your laptop is outputting an HDMI signal which has to be converted to VGA. Some connectors are physically different, but use identical signaling - in these cases a passive adapter is sufficient. Passive means there's no signal transformation necessary. It's just two different connectors wired together. For example, DVI-A is ...


49

You need to add a new panel to the second screen, and add a task manager to that. Right-click on the background of the second screen -> Add Panel -> Empty Panel. If you know how to move panels and add widgets to the panel, then move the panel to where you want it, add the tasks widgets, then set it to also only show widgets from the current screen. If ...


44

VGA is the only analog signal from the above mentioned ones so it's already an explanation for difference. Using the adapter can further worsen your situation. some further reading: http://www.digitaltrends.com/computing/hdmi-vs-dvi-vs-displayport-vs-vga/


29

I'm writing this on a 2560x1600 Dual Link DVI monitor connected to a computer using HDMI 1.4. Stop searching for HDMI to DVI-DL adapters. All adapters that you'll find are passive single-link adapters, even though they may be advertised as dual-link. Although a HDMI 1.4 to Dual Link DVI adapter is possible to implement using an Analog Devices ADV7619 297 ...


26

Many people get this the wrong way round. Signals go from > to You might think you're connecting your display to your computer, but you're not. You're connecting the computer to the display. This means your signal goes from the computer to the display - that's an HDMI to VGA connection. HDMI is a digital format, VGA is an analog format, so any connector ...


11

Assuming brightness,contract and sharpness are the same in both cases, there could be 2 other reasons why text is sharper with DVI/HDMI: The first has already been stated, VGA is analog so will need to go through an analog to digital conversion inside the monitor, this will theoretically degrade image quality. Secondly, assuming you are using Windows there ...


10

You are right: HDMI, DP and DVI-D use digital signals, while VGA uses analog signals. You'll need to buy adapters that convert those digital inputs to analog outputs (so yeah, no "passive" adapters). VGA degrades quality quickly with bad/long cables as well as with high resolution displays (it'll need to send analog signals, changing the output voltage at ...


9

That's a passive adaptor. It converts a DVI-I into a analogue VGA port. More precisely, it breaks out the analogue portions of a DVI-I connector. It will not work in a proper DVI-D port (or an improper one with a DVI-I socket). To actually convert DVI-D (or any real digital out - displayport, hdmi ect) to VGA you need an active adaptor. If its a DVI-I ...


9

I'll go through your Q point by point. Do I need (hdmi to vga adapter) OR (vga to hdmi adapter)? My common sense would tell (vga to hdmi adapter), but I am not 100% sure. Well, the exact naming of the adapter will depend on the vendor, but most vendors put the video source (computer) before the "to", and the video target (monitor) behind it. So &...


8

No you can't. According to NVIDIA's specs:- NVIDIA GeForce GTX 560 Ti, Graphics Card Installation Guide. (see page 10), the GTX560Ti only supports 2 monitors. You can't even use 2 DVI and the mini HDMI port simultaneously because of the card internal wires layout, they use the same connection. Try plugging the third monitor into the onboard graphic port if ...


7

The others make some good points, but the main reason is an obvious clock and phase mismatch. The VGA is analog and is subject to interference and mismatch of the analog sending and receiving sides. Normally one would use a pattern like this: http://www.lagom.nl/lcd-test/clock_phase.php And adjust the clock and phase of the monitor to get the best match ...


7

As per the Wiki article on DVI: A passive DVI-to-VGA adapter. This adapter will not work with a DVI-D output. It requires a DVI-I or DVI-A output to get the analog signal to a VGA input (even if the adapter looks like a DVI-D). A more expensive active adapter (or converter) is required to connect DVI-D to VGA. As such you would need an active adapter in ...


6

Before buying miniDP to DVI adapter, I tested with Ubuntu booted from USB and, as was expected - it worked even without AMD drivers, all 3 monitors, like a charm. So, seems that Windows 8.1 changed some configs and now it try to autoconfig only Eyefinity mode, even if it's disabled, or something... Also, report this bug to Microsoft would be nice :) P.S. ...


6

I have similar situation with dual systems (Win/OSX) setup sharing a monitor, and I am lazy to reach out and press the buttons twice on the monitor to switch inputs. The solution I'm using now is through AutoHotkey (https://autohotkey.com/). As shared by user shimapan in this post, you can customize the hot key that sends DDC/CI (from your operating system, ...


6

Any VGA only monitor in this day and age is seriously obsolete - most older monitors would be at least DVI capable. Your video card reflects that and has no ports that can be "passively" converted into VGA. Looking at your ports, that's a purely DVI-D port. It won't work. More accurately, the adaptor won't fit, and the analogue pins don't exist. If you ...


6

If you look at the Wikipedia article for DVI, especially the pinout, you'll see that DVI also can carry analog signals (the variant called "DVI-A"). That's why DVI to VGA adapters work: They take the the analog signals from the DVI-A pins, and route them to the corresponding VGA pins. So if your graphics card doesn't support analog pins on the DVI connector ...


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 ...


5

Late to the party, but it may prove useful: ( http://www.overclock.net/t/692956/just-got-rid-of-green-dots-on-screen ) The problem is simply because ATI drivers set 2D clocks too low (157Mhz Core,300Mhz memory). At higher resolutions like 1680x1050 these clocks are not sufficient and causes this problem so you need to up them to get rid of these green dots ...


5

Unfortunately your model of monitor (Acer P235H) doesn't implement any control protocol - such as an IR remote or HDMI CEC, so you won't be able to influence it's behavior with both inputs connected. That said, it's sometimes possible to trigger a change of input when a source is disconnected. That is - if you were to disconnect your laptop you may find the ...


5

There are a few answers indicating a digital signal vs. analog which is correct. But that does not answer the why? A few mentioned translation layers, this is sorta true too, a mainstream A/D conversion can cause a loss in fidelity, but you'd have to measure this as it is hard to see the differences with the naked eye. A cheap conversion and all bets are ...


5

The limit of six USB-connected monitors is imposed by the USB Adapters you're using. How many USB monitors can be supported by a single PC? Up to 6 USB displays are supported on a PC, and up to 4 displays on a Mac. Under Windows Multipoint Server, up to 14 USB clients are supported. http://www.displaylink.com/for-business/common_questions.php


5

You'll need a dual-link DVI adapter, instead of a single-link DVI adapter. After reading many forums from multiple places, it sounds like that's the problem you're having. I found a post from Apple that you can read here The title of the forum post states your exact problem, and I saw the same thing being said on a few other forums (non-Apple forums)


5

DisplayPort is compatible through all of these connections via different adapters: DisplayPort to VGA DisplayPort can be adapted to VGA with an active adapter, as it does not output an analog signal as standard. Note that most of these do not require additional power, and receive sufficient power to function from the DisplayPort itself. DisplayPort to DVI ...


5

Passive DVI to VGA The DVI connector spec provides for pins for an analog signal as well as digital. That design is primarily to allow a computer to provide both analog and digital output through one connector to support older monitors. The spec for the analog pins is electrically compatible with VGA. That means you can have a "passive" adapter cable ...


5

The specifications for that EVGA card only mentions Dual-link DVI connectors, which is what is giving the limitation. DVI is old and hasn't seen any upgrades done to the specification for many years and is limited to 2560 * 1200 (or somewhere close). HDMI on the other hand has been progressively updated and supports 4K resolutions. As mentioned by Daniel ...


4

One potential intended use would be to screw two of these adapters to the each end of a VGA cable to use it as a DVI-D cable, depending on how things are connected inside. This makes little sense as two of these adapters would cost about the same as a cheap DVI cable, not to mention that it would have worse electrical characteristics. Then again, that's ...


4

Not likely. HDMI is a DIGITAL signal. VGA is an ANALOG signal. You can shove as many adapters as you want in that chain, but at the end of the day you're still pushing digital data. The converter box is what CONVERTS (with adapters built in) the signal from digital to analog. For reference, DVI to VGA adapters exist because some DVI cables (not all) can ...


4

There is simply no way to use a passive adapter as DVI-D/Display Port/HDMI are a complete other technology than VGA. VGA uses analogue signals whereas DVI-D/Display Port/HDMI use digital signals. DVI-I uses also analogue signals therefore you can have a passive adapter from DVI-I to VGA.


4

If your graphics cards are Nvidia, they have a software called Surround Vision that turns any amount of monitors into a single one. http://nvidia.custhelp.com/app/answers/detail/a_id/2667 If you have an AMD card, they have built in software called Eyefinity. http://www.amd.com/en-us/innovations/software-technologies/technologies-gaming/eyefinity Both of ...


4

Mini DisplayPort (same as DisplayPort but different size) to DVI dual link adapters will work just fine, but only those really expensive active adapters ($100~). What is a active Mini-DP to DVI dual-link adapter? (could be applied in many other adapters) An active adapter (or powered adapter) it's a bit more complicated than a passive one. A passive one ...


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