An external display is a display device, such as a TV, projector, or extra monitor, that is not the primary display for the computer. Use this tag if your question is specific to the external display, rather than about multiple monitors in general.

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Is there a video quality difference between a Mini-DisplayPort-to-HDMI conversion and a USB-to-HDMI conversion?

I recently bought a laptop (Dell XPS-13), which comes equipped with only a Mini-DisplayPort for video, which is not compatible with most displays I have to use (university projectors). USB-ports are ...
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1answer
36 views

How to access the advanced boot options before/during Windows 10 boots up

I have recently been messing around with a second monitor and the system's display settings and now, every time I try to boot up, the screen goes completely black (not even a mouse cursor) right after ...
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2answers
574 views

Turn kindle paperwhite into secondary display

Could be interesting if kindle paper white can be used as secondary display to extend the screen . There is a simple browser implemented into kindle that may help. I don't want to jailbreak my kindle ...
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0answers
13 views

Use a second mac as a non-mirrored secondary display wirelessly?

I know this is possible via a mini display port cable. Is there an app that will allow me to use the display of my second macbook as a non-mirrored secondary display on another mac wirelessly?
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28 views

Change actual HDMI output resolution, Intel Graphics

So I can change the resolution (and clone or extend) through control panel, but it still always outputs 1920x1080 on my tv with the size of the desktop just changing in size within that. Does anyone ...
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0answers
120 views

Dell monitor working with one HDMI cable, but not with others?

I have a Dell U2312HM monitor connected to a Dell Latitude E7440 laptop via a HDMI-DVI cable. I'm running it on Ubuntu 14.04. I had an issue with the monitor blinking from time to time (reported here),...
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1answer
245 views

Dell monitor stuck in power save mode

I recently bought a Dell P2414H monitor for my office work. Since I am using a MacBook Air, I also bought a Belkin docking station to connect all my peripherals. While all of them appear to work ...
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276 views

Extend screen to two external monitors and duplicate on additional monitor

(I asked the same question over in the HP Support Forums with, probably, way too much detail. No responses.) I'm able to dock my HP ProBook 640 G1 on the HP 90W and extend my screen to two external ...
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105 views

Acer X193W monitor keeps displaying “no signal” after connecting it to laptop's HDMI port

I've had a 19" Acer X193W monitor lying around for a while now since my desktop PC crashed, so today I decided to have the monitor as an external display for my laptop. I went out to get an HDMI to ...
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0answers
18 views

Display interfaces that allow control of hardware display settings?

Are there any display interfaces (such as HDMI or DisplayPort) that support control of hardware display brightness, contrast, or other settings by a computer over that interface? This is a standard ...
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1answer
78 views

Switch to external display with shortcut instead of mouse on a Mac

I want to switch to my external display via shortcut and not by moving my cursor to the other screen.
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43 views

Extend Windows7 Laptop Screen to Samsung Android Phone

Did some digging, found a bunch of apps that claim to do this, but none are free and all have compatibility issues (some issues listed in app reviews specifically mention my video card). I am ...
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80 views

DisplayPort: 2550x1440 fails, but supported by machine

I recently purchased a Dell U2515H monitor. I want to use it with my MacBook Pro 13'' 2012, non-Retina, 2.5GHz. According to the tech specs, this MacBook can drive a single 2560x1600 pixel display (...
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3answers
882 views

Use 4k monitor @60hz with Nvidia GTX 850M

I bought a new Laptop - ASUS N750JK (see https://www.asus.com/de/Notebooks/N750JK/specifications/) with a Intel HD4600 and a Nvidia GTX 850M graphics card inside. I also bought a 4k Monitor (see http:/...
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17 views

Open Quicktime on second screen

I've got a number of MP4s which I'm watching individually, when I opened quicktime for the first time it opened up on my laptop screen and I dragged it onto the second screen where I want to watch the ...
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60 views

HDMI out on a tablet doesn't work with a 17" LCD monitor

I have a problem getting HDMI out of my tablet playing nice with video inputs of an old 17" monitor. Monitor in question is this, and the tablet is this. Monitor works just fine when connected to a PC ...
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1answer
155 views

hdmi to thunderbolt in for macbook

The goal: Get apple tv to play on my external display. The components: Apple TV (4th gen) Macbook Pro (mid 2015) w/ports 2x thunderbolt, 2x usb, 1x hdmi, 1x audio out / mic in. Apple Cinema ...
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1answer
44 views

make a mirror of the extended display in the primary display

I know this sounds ridiculous, but is there a way I can create some kind of window to view what is being displayed on a second montitor that is extended from the primary view? In the end, I'd like to ...
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1answer
38 views

How can a team of users share a large monitor?

Okay folks...I know this is a bit dorky but...I work in an engineering group and it would sometimes be nice to have a large monitor that everybody can project their screen onto - much like NCIS when ...
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47 views

External display via DispayPort shows black, when laptop closed (it's not off)

i connected my laptop (x230/Win7) to my new 4K Monitor from Phillips through it's Ultrabase 3 via the DisplayPort. I recognized that if connected over DP the external display shows black if i close ...
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1answer
306 views

4k Monitor. Higher PPI than iMac 27". More Pixelated than iMac

I'm looking to understand exactly why a monitor with higher number of pixels per inch (albeit slightly so), than the standard 27" iMac, cannot produce image that is at least just as sharp as images on ...
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41 views

Proper configuration of HDTV on Toshiba laptop

I've recently bought a Toshiba Satellite L50-C1709 which has a Geforce GTX 950M 4GB graphics card. Today, I bought a Samsung Smart TV 22" to use it as a monitor (I might replace it with a 24" tomorrow)...
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426 views

MacBook Pro doesn't wake up 4K external display connected via the displayport

I have a MacBook Pro Retina 15" Mid 2015 running Mac OS X 10.11 (El Capitan) and I have a Samsung U32D970Q 4K external display that I would like to use in a closed clamshell mode through displayport ...
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0answers
49 views

Is it possible to enter bios using an external monitor on a Vaio VGN-FE21S?

The manual says Fn+F7 should switch to the external display but this isn't working for me at power on. The internal LCD is dead so I was hoping to be able to enter BIOS using the external monitor. ...
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1answer
19 views

Monitor (TV) shows as active even when turned off

I have my primary PC with the monitor (DP) and TV (HDMI) connected. When I turn off the TV, my PC till shows that TV as active display. Any ideas?
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2answers
1k views

Daisy chain 2 external monitors on laptop without DisplayPort [closed]

I have: 2 Dell U2414H Monitors 1 DP in 1 mini DP in 1 DP out 2 HDMI A laptop with (No DisplayPort) i7-4710MQ processor 16GB DDR3 (2x8) GT 840M - 2.0GB DDR3 1 HDMI port 2 x USB 3.0 PORTS & ...
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1answer
368 views

Using USB keyboard on Dell U2514/MacBook Pro

I recently got a Dell U2415 monitor that I'm using with my MacBook Pro (2014). I want something I thought was simple: using a USB keyboard that's plugged in to the monitor's USB port. The monitor is ...
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1answer
49 views

Turned on my computer to find resolution all messed up, screen identified as “Generic Non PnP Screen”

I turned on my computer to find the resolution abnormally low (everything was big etc). In the Device Manager, my screen was being identified as Generic Non-PnP Screen. I have a Windows 8.1 desktop, ...
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15 views

Capabilities of new & upcoming Wireless based Display protocols & mechanisms?

The up & coming High Resolution/ HiDPI QHD, UHD, 4K Displays are currently being supported by newer & more capable revisions of Display Port, HDMI and possibly some merging/ overlaps with ...
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65 views

How to set lower than 800 x 600 to secondary monitor

I have an old analog monitor that its resolution is lower than 800x600. I need to set it as my secondary monitor. But the lowest resolution of windows is just 800x600 How to force windows to set ...
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48 views

Acer V223HQ monitor limited to 1280 x 1024 VGA

I'm currently using my work laptop at home as mine is fried at the shop. The issue is the monitor I'd been using with my home machine with the same VGA cable was giving me 1920 x 1080. With the work ...
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153 views

Lenovo G580 external monitor resolution issue using VGA

I am connecting an HP S2031 monitor to my Lenovo G580, running Windows 8.1. When I connect the HP monitor as an external extended display through VGA (it does not have an HDMI), in the Screen ...
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1answer
147 views

Unable to use 3 displays (incl. laptop) at the same time

I have a DELL E6540 with the following specs: i7 4610M (supports 3 displays according to Intel) AMD Radeon HD 8790M Intel HD Graphics 4600 1 HDMI port 1 VGA port Windows 8.1 Enterprise I think ...
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2answers
80 views

External monitor not working after starting in safe mode

I was having some troubles with my computer's antivirus so I had to restart my computer in safe mode. It successfully booted back up but my external monitor I have to use isn't working when I plug it ...
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1answer
132 views

How to run 2 external monitors on Dell n7520 laptop

I'm having the n7520 Dell Inspiron notebook, and i'm trying to connect 2 external monitors to it, meaning i want 3 functional monitors at all. i have bought VGA splitter and have 2 monitors connected ...
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2answers
37 views

Is there a way to move open window between linux machines?

I have two computers, both of which run Linux. My main computer is where I do most of my work on and my large display computer which sits in another room from which I give presentations and play short ...
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1answer
2k views

Force MSI To Uninstall

How can I force this to uninstall without the MSI? The MSI is not on the website and I tried extracting the MSI... even installing with the EXE gives the exact same error below:
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1answer
288 views

hdmi screen extend lagging and no sound

When i use my tv as an external monitor (hdmi screen extend) it workes fine until i choose my tv as default speaker. then all my videos starts to lag and there is no sound what so ever. When i was ...
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24 views

Determine the status of external displays in OS X from a script (at the command-line)

I'd like to configure my Vim, tmux, and some other things differently depending on whether I've got external display(s) attached to my laptop. (For instance, my external displays are usually further ...
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1answer
243 views

My new monitor seems to have a yellowish tint. Is there any way to deal with it?

So I bought a new monitor http://www.samsung.com/us/computer/monitors/LS27D590PS/ZA to connect to my MBA. However it seems to have a quite obvious yellowish tint with its display. I also encountered a ...
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0answers
227 views

HP laptop won't output to external monitor after attempted windows 10 update

(REPOST) I have a Windows 7 HP laptop with a damaged screen so I have it connected to an external monitor via HDMI. When I attempted to update to Windows 10 last night it didn't restart after the ...
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1answer
6k views

Will windows 10 automatically detect my external tv/monitor?

I have a windows 8, now 8.1 hp laptop with a damaged screen. I wanted to know if I upgraded or did a clean install to windows 10, would it automatically recognize my external monitor/tv. When I had 8 ...
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0answers
874 views

WIndows 10 external monitor

I have a windows 8, now 8.1 hp laptop with a damaged screen. I wanted to know if I upgraded or did a clean install to windows 10, would it automatically recognize my external monitor/tv. When I had 8 ...
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1answer
139 views

DisplayPort MST and HDMI adapter

I have a Dell u2715h monitor which has both a DisplayPorts in and a DisplayPort out. It claims to support DisplayPort 1.2 and MST (Multi-Stream Transport). I do not have a second DisplayPort enabled ...
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1answer
340 views

xrandr would not detect my second monitor

I am using linux, have 2 monitors and 1 laptop (3 screens in total) in my setup. xrandr detect 2 displays (laptop + 1 ext monitor) and I get the same output on both external monitors. $ xrandr ...
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1answer
29 views

How to stop Sublime Text 3 from changing font size on different sized screens

I've recently just installed AirDisplay 3 on my iPad so I can use it as a second screen for my MacBook Pro retina (with Yosemite). It works brilliantly with everything so far bar ST3. As soon as I ...
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3answers
601 views

My computer doesn't recognize the monitor's resolution on some VGA cables, what's going on?

My Mac doesn't recognize my TV's resolution on (so far) 3 VGA cables I've tried but it works just fine using other seemingly old VGA cables. My roommate had the same experience on Mint Linux. What's ...
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1answer
775 views

External monitor flashes occassionally only while power cord is plugged-in

I have a Thinkpad laptop (E550 to be exact) with an i5 CPU and Intel HD 5500 GPU running with Win 7. Since two weeks, while an external monitor is connected (to the VGA port) AND the power cord is ...
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1answer
17 views

How do I get the screen on my PC to appear on my TV screen? What do my settings need to be?

I have Screen A and Screen B. My PC shows screen A, while my TV shows Screen B. Oddly enough, Screen A is hidden on the left side of my TV screen. How do I get Screen A to show on both TV and PC? ...
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1answer
3k views

Dell Latitude E5540 doesn't recognize external display

I stumbled over this problem when I connected a projector to my E5540's VGA port and the laptop simply failed to detect it. Even restarting the laptop did not make it recognize the external display. ...