Questions that relate to the electronic display (sometimes called a visual display unit) for computers. Typically questions relate to visual issues such as flickering, resolution, black-screens together with the usage of single and multiple displays.

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6
votes
2answers
6k views

How to use shortcuts to switch between displays in LXDE?

How to use shortcuts to switch between displays in LXDE? I mean to switch between the laptop monitor and an external display. I edited /home/user/.config/openbox/lubuntu-rc.xml file to set shortcuts ...
0
votes
0answers
6 views

Monitor no signal after installing kde plasma

I recently decided to install kde plasma on my machine. I did the install, and everything went well. I restarted my computer, and now my montitor say no signal. This is on a laptop, but the actual ...
2
votes
1answer
667 views

How to start a program always on second monitor

I tried to Google and to browse/search the questions but with no luck. I have Xubuntu 12.10 installed and extended desktop is working great (Intel display driver). The problem is that I want to start ...
2
votes
1answer
36 views

Set “default” monitor to ALWAYS run apps in it instead of display#1

In my system, there are two different monitors 2 (main) and 1 ( in right , for films or etc.). When i use #2(main), logging in and opening an app or pressing Ctrl+Alt+T key, window opens in monitor ...
0
votes
0answers
658 views

15.10 Dell XPS 15 (9550) External Monitor not waking

I'm in Ubuntu 15.10, with Kernel 4.3. Things are working better than I could ever imagine. Other than ONE bug... When my laptop turns off it's screen and my external monitor's screen (I have it set ...
0
votes
2answers
7k views

Second monitor recognized but only black screen

I am running 12.04 on a Toshiba Portege laptop. The graphics card is an Intel 945GM/GMS. The 2nd monitor is an Asus (Ancor Communications 22"). When I connect the monitor to the computer the monitor ...
3
votes
2answers
7k views

Turn off laptop display and have monitor

My laptop display has stopped working and is unfixable! Anyway, I got a full HD monitor and plugged that into the HDMI port of the laptop. I have changed the power settings so that I can close the ...
0
votes
0answers
23 views

Ubuntu 15.10 Problem with monitor since today

Since today, my system stopped recognizing my monitor. The display is surrounded by black space, like if it was a 17' monitor. My monitor is a samsung 22', and my graphic card is GF GT 520. On system ...
1
vote
1answer
1k views

configure modeline Ubuntu 12.04

I am running Ubuntu 12.04.2 in dual boot with Windows 7 on the same drive. In Windows, I customize my refresh rate for my 2nd monitor with the program powerstrip. When I export my Linux modeline and ...
0
votes
0answers
35 views

Configuring Ubuntu for a 21:9 screen

I have an ultra wide screen, 21:9 resolution, AOS. There's no option for 21:9 in the Ubuntu display settings though so I have to have the monitor set to 16:9 which kind of defeats the purpose of ...
0
votes
1answer
27 views

how to install download-monitor on 15.10

i have 15.10 and want download-monitor as shown from https://apps.ubuntu.com/cat/applications/precise/download-monitor/ it is not available. How to make it available?
0
votes
0answers
13 views

Can't connect to monitor from ubuntu 14.04

I've got a linux box under my desk that I control via putty and WinSCP, it works fine but for a few things I prefer to have an actual display to do it. I switched over today and theres no output to ...
1
vote
1answer
20 views

How can I dim my monitor?

On windows, I had an application called dimmer. I used it on my desktop monitor to make the brightness more manageable. I want an equivalent for Ubuntu. I tried xbacklight to no avail.
8
votes
6answers
35k views

Webcam doesn't work in browser…?

I'm running the latest version of Ubuntu, and I have a Dell Sp2009wfd monitor with built in microphone and webcam. I've gotten the microphone working on mumble and on sound recorder, and I've gotten ...
0
votes
1answer
29 views

Visual fatigue in Ubuntu

Hello I have a problem with ubuntu. Visual fatigue is the problem, i use the pc and later i feel the eyes bad, the problem? i have a led monitor so tecnically isn't there problem,ubuntu is the ...
10
votes
7answers
23k views

How to monitor & log server hardware temperatures & load

I am looking for a way to log & monitor my server hardware temperatures and load (like for CPU or RAM). How might I do that? Objective is to: ensure hardware is not heating up identify what ...
0
votes
0answers
10 views

Package name of the Unity monitor manager GUI

The default GUI tool for dragging external monitors around, changing their resolution, mirroring the monitors, etc.; this tool is somehow gone. I’d like to install it but I can’t figure out the ...
0
votes
1answer
297 views

How to calibrate monitor in Ubuntu Mate

Question: How can I calibrate my monitor in Ubuntu Mate without extra hardware? Details: I have installed gnome-color-manager but no gui is available and I can't find an ICC profile file for my ...
19
votes
4answers
18k views

Turn off monitor using command line

I am runnning Ubuntu Server on my laptop. There is really no reason for the screen to be on. I have been trying to use this command to turn the screen off: sleep 1 && xset dpms force off ...
1
vote
0answers
32 views

Network activity monitor

I would like to ask you, if you know any SIMPLE and LIGHTWEIGHT application for monitoring network? I am not looking for network activity monitor for servers, like daily stats etc, i need realtime ...
0
votes
0answers
22 views

Some applications don't stop in Ubuntu 15.10

After installing Ubuntu 15.10 I've noticed that some applications don't really stop after you close them. It's the case of Ubuntu Tweak and qbittorrent. When you close them and try to open them again ...
0
votes
3answers
4k views

2560 x 1080 Screen Resolution on Ubuntu 14.04

I recently installed Ubuntu 14.04 on a mac mini and bought a 2560 x 1080 ultrawide LG monitor for it. Problem is that it doesn't display the proper resolution, the maximum being 1920 x 1080 under ...
8
votes
3answers
6k views

How do I find out monitor make / model?

My friend has recently bought a second-hand vehicle with an in-car computer and it's wired up to a touchscreen monitor on the dashboard (very impressive!). Now, I've helped him install Ubuntu on it ...
0
votes
1answer
96 views

Second Monitor Not Detected!

I have a Dell M3800 and recently purchased a Dell S2715H and connected it to the laptop through the HDMI cable. For whatever reason, the monitor is not detected by ubuntu. My older dell monitor ...
2
votes
2answers
4k views

Ubuntu 12.04 stopped recognizing my BenQ monitor and reduced resolution to 1024x768

A few days ago I installed Ubuntu 12.04 32bit Desktop. It recognized my hardware without a problem (at least that I know of) and all worked fine. I left my system running (it is at work) through the ...
0
votes
0answers
43 views

display issue in 14.04 Dell Optiplex 9020 with Intel HD 4600 and dell Monitor

just upgraded to Ubuntu LTS 14.04 with Dell Optiplex 9020 Intel® Core™ i7-4790 CPU @ 3.60GHz. HD graphics 4600, Dell 21.5 inch 1920 x 1080 resolution screen. no option in display to increase ...
2
votes
2answers
4k views

Correct Display configuration. Errors while trying to arrange displays

I am trying to set up my tv with my laptop trough a VGA cable. The display application in Ubuntu throws a lot of errors to me and I have given up in trying to do it myself. I try to apply the 1920 ...
1
vote
1answer
13 views

Stop display from fading & consequently shutting monitors off when screen is locked on 14.04

So far I've tried what's shown in the image below, and I also restarted my system afterwards to see if that helped, but still, when I hit WIN-L my screen will lock and slowly start to fade to black, ...
0
votes
1answer
70 views

Getting wrong resolution on old samsung monitor

Today i connected my pc with old samsung sync master 591s monitor and getting strange display resolution. My resolution is being set at 800x600 but still cant see my side panal. Well its look like ...
-2
votes
2answers
102 views

How can I improve yellow tint on monitor? [closed]

I have Acer K222HQL monitor, AMD Radeon HD 8670M graphic card. Connection through HDMI. I tried different laptops, different OS (Linux distros, Windows), different ICC profiles (including ...
0
votes
1answer
18 views

2nd Monitor isn't recognized in Display but is usable

I have Ubuntu 15.04 currently installed, with the AMD display driver. AMD recognizes both monitors, and has the accurate information and resolutions on both monitors, and both monitors set to single ...
6
votes
1answer
83 views

Bind mouse to a concrete monitor in a dual screen setup with two independent pointers

Scenario is, bind my Wacom Bamboo to my second monitor and my mouse to the first monitor. The binding for Wacom Bamboo works perfect with the settings for the tablet. But how can I bind my mouse to ...
0
votes
0answers
12 views

Display (50“tv) is detected as 72”

I'm new at using this OS 14.04.3 and the monitor e.g. my TV as this is to be a mediacenter is detected as Goldstar 72" when it is infact a LG 50". It is hard to get proper proportions and handle it. ...
31
votes
3answers
28k views

How to set the monitor to its native resolution which is not listed in the resolutions list?

After installing Ubuntu 10.04 with my Samsung SyncMaster B2030, native resolution (1600X900) is not found in the list of resolutions.
0
votes
2answers
2k views

How to reset external display?

So I was testing my laptop on my external scree and managed to cycle through the modes until I hit the one which displayed only on the external monitor. This just output a green screen and nothing ...
0
votes
1answer
74 views

Monitor Resolution problem in Xubuntu 15.04

I'm new in this forum and even a beginner with ubuntu. I've already tried to set the resolution of my monitor to 1440x900 but I can't get on because xrandr shows me error messages like: xrandr: ...
2
votes
1answer
195 views

analogue to Windows combination ctrl+alt+del [duplicate]

Combination Ctrl+Alt+Del in Windows calls Task manager. You can see running processes and kill any task. Is there anything like this in Ubuntu? Thanks in advance
0
votes
2answers
62 views

Why can I watch 1080p videos if my Pc has a lower resolution?

When I tipe the following comand in the terminal xdpyinfo | grep dimensions I get the following output: dimensions: 1366x768 pixels (361x203 millimeters) As far as I know these are the number ...
0
votes
0answers
48 views

[Lubuntu]Default Resolution Problem

I have a problem. I have to let you know as a warning that I am a completely newbie. I just installed Lubuntu 15.04 and I wanted to try them. I am a windows user and coding seems a bit rough for me ...
0
votes
0answers
241 views

Music visualiser program for Ubuntu?

I'm looking for a program that will render a full screen music visualiser like the one in this video. I'd like this to be able to take input from a 3.5mm jack and then display on a second monitor ...
18
votes
2answers
14k views

Manually turn off monitor

Can I turn off my laptop monitor manually and instantly with just a click or a simple terminal command? I just want to turn off my monitor not locking my machine. There is no dedicated turn off ...
0
votes
0answers
115 views

Ubuntu installation disc “failed to map dmar0”

I have installed Windows 10 recently but I have encountered a lot of problems so I want to go back to Ubuntu. Found the installation disc and boots normally for about 10 seconds. Then the screen goes ...
0
votes
2answers
48 views

How to switch to external monitor or clone main one while main one is broken?

I have my laptop and the screen is broken on it. I have an external monitor and I want to duplicate the screens so I can see what I am doing, but I can't see the main screen so I can switch that. ...
0
votes
0answers
14 views

Ubuntu Monitor turn of and on

When I turn off my monitor using it's button, and then turn it on again it does not receive any signal from the computer until rebooting it. The problem in Ubuntu 14.04.
0
votes
1answer
33 views

How do I set brightness to a lower level in lubuntu 12 (HP laptop)?

I tried everything I found online, but none of the methods I found worked. The buttons don't work, and there's no such thing as "Brightness" in Monitor Settings. I tried xbacklight -set but it didn't ...
3
votes
0answers
874 views

Could not set the configuration for crtc 64 (15.04)

Sometimes when I attach an second LCD monitor (iiyama ProLite E2407HDSV) to my Asus N56J laptop and I try to extend my laptop monitor with the LCD I get the error: could not set the configuration for ...
1
vote
1answer
46 views

How do I apply color profiles in Xfce?

In GNOME, you can use GNOME Color Manager. But how can I do this in Xfce?
0
votes
1answer
106 views

Horizontal lines in Ubuntu 15.10

I have installed Ubuntu 15.10 64bit on a Dell Optiplex 780 desktop with a 23 inch monitor, 4 GB of RAM and Intel Duo Core processor. The monitor shows horizontal lines (artifacts) randomly at any ...
0
votes
0answers
23 views

Monitor Configuration

Upon booting, I get the following: Could not apply the stored configuration for monitors none of the selected modes were compatible with the possible modes: Trying modes for CRTC 63 CRTC 63: trying ...
5
votes
2answers
7k views

How do I configure a displaylink USB monitor?

I have seen many pieces but not a comprehensive guide to fix what must be a very common problem, particularly in Ubuntu 11.10 where there is no xorg.conf file. Is there an easy how-to somewhere (for ...