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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HDMI connection to external display does not work (but VGA does)

I have a Sony Vaio VGN-2950 with a HDMI connection and an external monitor: a Samsung 24A350H with a HDMI input. If I connect the laptop to the Samsung via a VGA connection, it works fine. However, ...
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12 views

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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1answer
44 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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1answer
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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1answer
5k views

Use external display from boot on Samsung laptop

I have a Samsung RV511 laptop, and recently my screen broke. I connected an external screen and it works fine, but only after Windows starts. I want to be able to use the external screen right from ...
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0answers
18 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
22 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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3answers
8k views

How do we “freeze” the display on an external display?

I currently have an external display connected to my laptop. How can we temporarily "freeze" the screen of the external display, such that we can continue using the laptop without having the screen ...
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0answers
81 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
4k views

How can I regain the ability to output to an external monitor via HDMI on my Lenovo Yoga 2 Pro?

I've had a Yoga 2 Pro (running 64-bit Windows 8.1) for a few months. I usually have it hooked up to an external monitor via HDMI. I disconnect and reconnect it all the time. This machine has the ...
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2answers
30 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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0answers
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 ...
3
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1answer
3k views

Keyboard shortcut to set screen resolution in windows 7

Using a windows 7 laptop when I switch off/disconnect & reconnect my external monitor, or after getting the laptop out of sleep mode sometimes the screen resolution is all wrong and if I go to ...
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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
59 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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5answers
28k views

Secondary monitor shuts off when laptop lid close

I have a new dell XPS laptop. My external Dell monitor attached to my laptop.Everything works fine if my laptop lid is open, but if I close the laptop lid, I lose the display on the monitor attached ...
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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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2answers
9k views

Screen brightness randomly set to lowest setting Lenovo ThinkCenter

On multiple ThinkCenter machines at the office, the screen brightness on the desktop displays is being set to the lowest setting. Using the monitor HUD the brightness can be changed again, but doing ...
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0answers
57 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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0answers
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
48 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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1answer
2k views

PowerPoint Won't Put Display On Projector Screen

I have a course to present in half an hour. i'm using PowerPoint (2007, I think) The screen I want people to see is appearing on my notebook computer. The screen I want to see on my notebook is ...
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0answers
14 views

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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0answers
246 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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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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1answer
79 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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4answers
4k views

Closing laptop lid and using external display causes mouse to move on it's own

I plugged my ASUS Taichi Laptop into an external monitor via the VGA Adapter that it comes with. It was working fine, but then I configured a power option so I could shut the lid without it going to ...
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6answers
37k views

3 displays with Dell Laptop (2 monitors + laptop display)

I have a Dell Latitude 8420. It is connected to a dock. Is there any way to have two monitors connected to this setup and also use the laptop screen too? I want the desktop extended on the 3 ...
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0answers
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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0answers
2k 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, ...
2
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2answers
5k views

Secondary monitor does not display native resolution

I have a laptop (Acer Aspire 8730G) which runs a GeForce 9300M GS. Its native resolution is 1680x945 pixels. Now, I connected my monitor to it (LG E2250V-PN) with VGA (laptop only has a VGA or HDMI ...
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0answers
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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0answers
26 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 ...
1
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3answers
5k views

Can I make Windows 7 and the Nvidia Control Panel “forget” external display resolutions?

I'm currently having a problem with my system where the full 2560x1440 resolution of my Dell U2711 monitor isn't well supported by my ASUS G73S laptop (it has an NVIDIA GeForce GTX440M CUDA with 1.5GB ...
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1answer
367 views

Run a script when second monitor is connected

I currently have a TV attached to my computer via HDMI. When I set the TV's input to the appropriate HDMI port, it becomes visible to the computer and the computer adds it as a second display. What I ...
0
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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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0answers
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 ...
2
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3answers
226 views

One computer, switch between four monitors?

I don't have a powered standing desk - instead I have a fixed standing desk next to a regular desk. I currently have two monitors on the standing desk attached to the computer. I'd like to add another ...
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0answers
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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3answers
822 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 ...
7
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6answers
16k views

Two identical external monitors, one through HDMI another VGA. Text on VGA looks blurry

I've tried a lot of things but I can't seem to get it working correctly. Below is my setup. Laptop is a Dell Latitude E6535, which has Video chip/card NVidia NVS 5200M. I have two external AOC IPS ...
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1answer
60 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
46 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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2answers
2k views

Windows 7 does not recognize LG E2250 monitor when connected with RGB

I have a Lenovo Thinkpad T410 and an LG monitor E2250 (1080p, so should support 1920×1080). I try to connect the monitor using the RGB connector and use it as an external monitor. The problem is that ...
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0answers
55 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 ...
0
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0answers
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 ...