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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External monitor flicker - probably when CPU usage is higher

I have Fujitsu UH554 ultrabook. At work I'm using Acer external monitor, via HDMI. At home I'm using HP Pavilion external monitor via HDMI -> VGA convertor. Sometimes if I'm at work (on Acer monitor ...
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43 views

Windows 8.1 Laptop; Is there a way for closed lid to cause sleep but not when there is a monitor hooked up?

Is it possible to make a laptop sleep when the lid is closed UNLESS there is an external monitor that is plugged in? Perhaps a registry hack or third party software? The control panel power settings ...
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31 views

Is my monitor faulty and I need to return it, or is there a quick fix?

I just bought a BenQ RL2455HM monitor. I was really excited until I opened the box, connected the power lead and turned on the monitor to see that it is not working properly. I cannot post any ...
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17 views

ASUS monitor turns off, replacing the power cord works for a while then it happens again

My ASUS monitor is turning off a couple of times a day and is unable to be turned back on. I discovered that replacing the power cord allows it to turn on again, and in fact if I just plug in another ...
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1answer
32 views

3rd Monitor in a dual monitor setup with switch leaves one blank

I have basically a dual monitor setup which works well. I have however, until recently, had a switch in place to switch to a third monitor which has the same screen resolution as the lowest resolution ...
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1answer
21 views

With Broken Laptop Monitor and Good External Monitor on Toshiba With Windows 8.1, How to get past boot difficulties?

I have listed my parameters in the title. Something is wrong with the boot process, I never get to the point where my external monitor is used. I tried this awesome blind navigation sequence which I ...
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79 views

No HDMI output on Debian 8 laptop

WHAT DOESN'T WORK: I'm running Debian 8 on a Dell M4800 laptop and I'm unable to get it to talk to a new external monitor via either HDMI or DisplayPort. The Debian 8 (Mate) Live USB also does not ...
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2answers
29 views

Laptop projecting to second screen gets extremely hot

I have an ultrabook which gets extremely hot when projecting to a second screen via the HDMI port. I'm not doing anything I wouldn't normally use the laptop for, so it's specifically when it's ...
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12 views

Manually apply f.lux settings to directly to monitor

I recently started my first full-time job (web development), and I've read that applying slight f.lux color settings even during the day can greatly reduce eye strain. I would like to do this, but my ...
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1answer
17 views

Using HP port replicator, when laptop is closed image on monitor reduces in size

I am Using HP port replicator, when laptop is closed image on monitor reduces in size. How can I set things up so that image remains full screen when laptop is closed? Laptop & monitor are both ...
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1answer
56 views

External monitor connection works with HDMI but not VGA

I smashed my laptop screen so I have to use an external monitor. I can connect with an HDMI cord but not with VGA. I want VGA so I can listen to sound via headphones on the laptop, it's an Acer E1 ...
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1answer
39 views

Laptop goes to sleep when lid is closed and disconnected from power

I am trying to work with my computer (Macbook Pro) attached to an external monitor, while the lid is closed. I can work on it when the laptop is connected to power, but when I disconnect it from the ...
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55 views

Dual monitors go wireless

I will be using the Gigabyte GA-Z97X-UD5H-BK motherboard. So it natively supports 3 monitors output - hdmi, dvi, and vga. To make things complicated, i wish to have my monitors go wireless. I did a ...
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1answer
70 views

DisplayPort daisy chain not working

I have two Dell UltraSharp U2715H screens, supporting DisplayPort 1.2 and daisy chaining. I have confirmed this by connecting them together in a daisy chain, and connecting the first monitor to my ...
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2answers
36 views

Will external screens dim as part of power management?

Most, if not all, Windows laptop computers will dim their screens after a configurable time duration. After an additional time duration, the screen will turn off completely. These settings are ...
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19 views

Installing WINDOWS - 7 WITH secondary display enabled from the time of installation

We have MINI ITX motherboard, This board supports multiple display option VGA, LVDS..For this configuration we prefer only LVDS. Currently, we are migrating from LINUX to WINDOWS,Initial installation ...
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1answer
20 views

ViewSonic Monitor on Windows XP

The Brightness/Contrast Menu is frozen in the center of the screen and the bar keeps flickering up and down between brightness and contrast. As it is in the center of the screen I can't run any ...
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3answers
47 views

External monitor to laptop resolution [closed]

I own this laptop http://www.sony.co.uk/support/en/product/VGN-FW41E and I would like to add an external screen like this one http://www.amazon.com/Dell-Ultrasharp-U2415-24-Inch-LED-Lit/dp/B00NZTKOQI ...
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Monitor blinking when I plug an audio jack

My Dell Latitude E7440 laptop is connected to a Dell U2312HM monitor like so: laptop -> HDMI cable -> HDMI-DVI adaptor -> monitor. Sometimes when I plug or unplug the audio jack from my ...
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1answer
15 views

External monitor shuts off when set as only monitor

So I've got an ASUS PB287Q hooked up to my Asus NV550JV through DisplayPort. I'm running Windows 8.1 and my problem is the following: If I extend my desktop from the laptop, then everything is fine. ...
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20 views

How to extend your monitor to a new X display

The setup is the following: My university provides monitors for groupwork that allow sharing your desktop via x11vnc -connect <address_of_the_monitor>. However, the desktop is then displayed ...
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22 views

External display as primary display on boot

So a few weeks ago I accidentally destroyed my laptop screen, but the rest of it works fine. I've got to a point where I need to format my laptop completely and reinstall windows through the recovery ...
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1answer
76 views

Asus N551JK and no. of external monitors

How many external monitors can the notebook Asus n551jk cn104d support? The notebook has a geforce 850m graphics card with alternate intel hd graphics It has one HDMI and one mini display port, but ...
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25 views

Samsung P2250 odd flickering

I noticed odd flickering on my external monitor, connected via HDMI. It alternates between black and brown, as seen here: https://www.youtube.com/watch?v=C7xJlCRTLZ8&feature=em-upload_owner The ...
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1answer
43 views

External display changing brightness based on what's shown

I'm using a Dell Inspiron laptop running Windows 7, with a Samsung SyncMaster P2250 connected via D-SUB as external display. The display seems to dynamically adjust it's brightness based on what's ...
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35 views

Tv and Computer connection HDMI

Using A DVI to HDMI adapter on my GPU connected with an HDMI cable to my HDMI slot on my LG TV UN32E5000. My TV loses connection when my PC sleeps or I push Ctrl + Alt + Delete. TV has latest ...
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240 views

Blurry text on external monitor with High DPI Windows laptop

I have a Fujitsu u904 with 3200x1800 display and Windows 8.1. I had to scale my DPI to 200% to be able to read text on it. Of course I was expecting a lot better image scaling, since this is 2x ...
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18 views

having 4 separate desktops on one display, each working by itself

I want my HDTV to act as it would be 4 separate desktops, so I can have 4 videos recorded at the same time on the same screen. Is there any possible solution to that?
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59 views

External display set brightness with laptop

I have Dell U2415 connect to my laptop. On laptop I can manage brightnes with fn + arrow, but this work only on laptop. It show windows show But dell not react is there some application can do ...
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1answer
44 views

2 sets of mirrored monitors windows 7

I have a graphics card with 2 dvi outputs. I have 2 monitors and a hdmi switch that goes to a hdtv. I am trying to see if its possible to mirror each dvi output so that each dvi has 2 receiving ...
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3answers
808 views

Second monitor not recognized after boot, connected to new laptop

I just bought new Asus laptop model N750JK. I've tried to connect it to my external monitor via HDMI port (HDMI->DVI adapter). The second monitor displays image on the screen when I start the PC and ...
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53 views

No display to external monitor

Checked a bunch of related questions and don't see the same issue. My lenovo T430s recognizes my VGA to external monitor (Samsung SyncMaster920ew) but the monitor stays blank. The laptop adjust the ...
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131 views

Is it possible to force 2560x1440 over HDMI on mid 2010 Macbook Pro?

I am trying to use my mid 2010 macbook pro over one of the two available HDMI ports on the monitor (displayport taken by primary pc). Whenever I connect with the equipment below I can only select ...
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39 views

How can you mirror a high-resoluton screen?

I just bought a 1440p 21:9 monitor that I had planned on using wirelessly with my laptop from across the living room. I tried using a Miracast dongle (a Microsoft Wireless Display Adapter) but it will ...
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1answer
53 views

Determine if my laptop can handle certain resolution

I have a Dell Latitude E6510 and thinking of buying an external monitor with a resolution of 2560 x 1600. Is there any tool I can use to determine if my laptop will be able to use the full resolution ...
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1k views

OS X Yosemite fonts jagged/blurry on external monitor

Anyone have any suggestions on possible fixes for jagged text on my external monitor hooked up to my rMBP? I am using an ASUS MX279H monitor. The text is pretty jagged everywhere. Safari, Messages, ...
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1answer
311 views

DELL latitude shows a blank screen unless connected to external monitor

I have a DELL latitude E7440. If I power it on as is, a blank screen is displayed. However if i connect to an external monitor, it works fine. Is this a driver issue?
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125 views

My external display is bad with mac book retina display

I have mac book pro retina display 15". I have BENQ monitor GW2450 My the display is not clear and font looks very bad like some white dots in all fonts. Loks like resolution is not right. In the ...
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32 views

Put macbook display screen to sleep but leave external monitor on?

Im connecting my macbook to my TV via the mini display port. If I put the laptop screen to sleep (via a hot corner) the TV screen also goes dark. How can I put the laptop screen to sleep but leave the ...
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78 views

Window Chrome on Task Bar, Desktop IE, scaling incorrectly on Windows 8.1 on SP2 with an extended desktop to an external display

I have a surface pro 2, and an external monitor attached via mini display port adapter. I have UNCHECKED the "let me choose one DPI for all screens", and everything is great except I have one fly in ...
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40 views

Close lid on macbook air without changing primary display to the external monitor

When I connect my laptop to a TV, I need to use the touch pad to control the mouse, so the lid needs to be open. So I drag the video player's window to the TV and then want to start the movie and ...
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63 views

VGA output looks smudgy

I am using Windows 8.1 on a Lenovo G 580 with an Intel HD 4000 graphics chip. The external monitor I use is a HP Z24i and my problem is not only the max resolution that can not be reached (1920x1200, ...
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35 views

Configure three screens backed by two graphic chips in a laptop under Linux

I'd like to connect two external monitors (one via HDMI, one via VGA) to my HP ProBook 4330s LW813EA laptop, while keeping the laptop screen on as well. The Intel HD 3000 graphics embedded in Core ...
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50 views

External monitor display cuts in and out

I have a HP Pavilion 25bw external monitor that is connected to my lenovo T420s via a displayport to hdmi cable. When I boot into Ubuntu I have no issue but when I boot in Windows (7 or 8.1) the ...
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1answer
279 views

Why does my MacBook Pro (with Iris 5200) only output 1920x1200 via HDMI?

I have a late-2013 15" retina MacBook Pro with an i7-4750HQ CPU and onboard Iris Pro 5200 graphics. And in case it makes any difference, I'm running Win8.1 on it. When I connect this MBP to an ...
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2answers
57 views

Can DisplayPort enhance resolution?

I'm a little new to the gaming laptop scene and I've been wondering: If I bought a laptop with a native resolution of 1920x1080 and hooked up a DisplayPort cable to an external monitor, would the ...
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304 views

Fuzzy image on Emerson LF320EM4 TV when using HDMI

I have a Dell Inspiron 17" laptop with an Intel HD Grapics 4000 video card, running Windows 7. It's also connected to an Emerson LF320EM4 TV via HDMI. All I want is a crisp image, but I am having ...
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1answer
143 views

Lenovo drivers do not send auto adjust information to a monitor

Lenovo drivers do not seem to provide any external monitor with how it should auto adjust. Is this correct behavior? I've noticed with a few Lenovo branded monitors (thinkvision L1711pC and below), ...
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1answer
9k views

How do dual monitors work while gaming?

I'm thinking of getting a 2nd monitor and utilizing the extended desktop function. What I'd like to know: How would this work if I wanted to play a game? Would I be able to have the game appear only ...
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166 views

How to select video connector between laptop and external monitor?

I want to connect a Lenovo ThinkPad X1 Carbon laptop to a Dell 2408 WFP external monitor. The ThinkPad laptop has a 14.0" WQHD (2560x1440) onboard display. It has Mini-DP and HDMI ports, and via a ...