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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Mouse flickering Ati Radeon 7470 Ubuntu 14.04

I am currently running Ubuntu 14.04, Ati Radeon 7470. Everything works fine except for the mouse flicker ALL the time and if I disconnect and connect a monitor immediately log me off. I have not ...
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1answer
42 views

Steam with a computer using 2 monitors

I have 2 monitors, and every time that i run a game from steam, it runs in the wrong monitor. Can I tell steam in which of the monitors to use the full screen mode? Thanks
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16 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 ...
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49 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 ...
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356 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 ...
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1answer
103 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?
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27 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 ...
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1answer
26 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.
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1answer
56 views

Visual fatigue in Ubuntu

Hello I have a problem with ubuntu. Visual fatigue is the problem. After using my pc, my eyes feel really tired. The problem? I have an LED monitor so it's not the technology that's the problem, ...
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0answers
19 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 ...
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1answer
83 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 ...
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33 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 ...
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112 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 ...
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1answer
32 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, ...
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1answer
203 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 ...
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1answer
152 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 ...
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1answer
88 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 1,...
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1answer
22 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 ...
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0answers
18 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. I'...
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1answer
171 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 ...
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2answers
104 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 ...
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0answers
67 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 ...
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254 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 ...
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1answer
209 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: ...
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0answers
350 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 ...
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2answers
67 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. ...
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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.
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1answer
44 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 ...
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1answer
155 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?
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0answers
49 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 ...
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1answer
155 views

How to add a resolution in display settings? [duplicate]

I have a computer using Ubuntu 14.04 LTS with the ASUS Nvidia gt440 graphics card and a vga monitor that is supported with the resolution of 1280 X 800. However, in the display options I could not ...
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0answers
1k 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 ...
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0answers
34 views

install centreon on ubuntu server 12.04

I am trying to install Centreon on ubuntu server 12.04 (32 bits) Do you have any tutorial to do so ? Thanks
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0answers
32 views

Ubuntu 14.04 does not detect second monitor (works fine with Windows 10)

lpsci | grep VGA gives the following output 03:00.0 VGA compatible controller: NVIDIA Corporation Device 13c0 (rev a1)
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1answer
332 views

Prevent monitor from losing signal after screen saver / lock activates

After the screen saver activates, or after I manually lock the screen via Ctrl+Alt+L, I see a blank black screen with just the date / time in the upper right corner. A few seconds after that, my HP ...
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0answers
18 views

Cycle monitor power on Suspend/Resume

I'm trying to find a way to get my Ubuntu desktop to automatically turn off my monitor (actually a Sceptre TV) when it suspends, and automatically turn back on when it wakes. They are hooked up via ...
1
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1answer
366 views

Dual monitor resolution is ok, but display is stretched in ubuntu 15.10

i have a fresh install of Ubuntu 15.10, with a dual monitor setup on a Nvidia GT620. Both monitors are Samsung SyncMaster S23B350, left monitor is with on a VGA to DVI adapter, and the right monitor ...
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1answer
255 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 ...
2
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1answer
241 views

Ubuntu 14.04 second monitor with nvidia gpu

I just installed Ubuntu 14.04 On my system, but can't get the second monitor to work. Right after the installation, the monitor was working, as I was using the standard nouveau driver, but this driver ...
0
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1answer
48 views

What component is causing the monitor to go to sleep?

We make systems based on Ubuntu 14.04 which we configure to kiosk mode, meaning we change the session to run our application and never present any desktop. Our session file is: [Desktop Entry] ...
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0answers
116 views

Screen resolution changes automatically from 1920x1080 to 1745 x 981. How to prevent the change?

I have monitor BenQ 24" GL2450 that I use as a second monitor. The first monitor is from my laptop that runs Ubuntu 14.04(LTS). According to the settings the resolution of the second monitor is set ...
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0answers
28 views

Ubuntu detects a fake monitor each reboot

When I turn on the Ubuntu, it detects a monitor that does not exist and I must desactive it each time I log in my session: What can I do to delete permanently this fake monitor? The system is ...
0
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1answer
214 views

Second monitor not detected on Ubuntu 14.04.3 LTS

I am trying to hook up two monitors to my Ubuntu 14.04.3 desktop. My First monitor is connected to the CPU via an RS-232 cable, and is up and running. The second monitor is connected to a display link ...
0
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1answer
73 views

how to hook to monitor sleep event?

Is there an event I can hook up to when the monitor is set to sleep? I mean just the monitor DPMS sleep, not the PC sleep/suspend. My intention is to run a script when the monitor is sent to sleep ...
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votes
0answers
3k 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 ...
2
votes
1answer
430 views

monitor resolution reseted after reboot (one monitor)

I have a computer with ONLY ONE MONITOR - these are the specs: Ubuntu 15.04 - 32 bits Processor Intel® Pentium(R) Dual CPU E2180 @ 2.00GHz × 2 Graphics Intel® G33 x86/MMX/SSE2 $ lspci -v | grep -i ...
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0answers
9 views

Gateway FPD1810 Monitor unrecognized

How do I get Ubuntu to work Properly with my flat screen monitor? Every attempt so far that I have made has made Ubuntu impossible to use because it keeps using a resolution the monitor does not ...
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3answers
588 views

Display flickering and going black on 15.04 - Lenovo Y40-70

The Problem: The problem began a few weeks ago when my display started to flicker on the login screen. Recently the flickering became much worse, especially when browsing the web. Any update to the ...
0
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1answer
127 views

Black Screen - Unsupported Resolution

I have an ultra wide screen monitor from LG (29UC97C-B) which seems to be not supported by Ubuntu. Shortly, before the Login screen should be visible, the monitore becomes black and prints something ...
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0answers
387 views

Ubuntu 14.04 - Error on line 1 char 1

I have been using Ubuntu 14.04 for some weeks now dual booted with Vista on a Dell Inspiron laptop. I use a dual monitor set up which was working fine. I unplugged my laptop once from the external ...