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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182 views

Ubuntu Gnome 14.04 - 100% CPU usage alternating between cores

I've noticed my Ubuntu Gnome 14.04 has been getting a bit sluggish lately - things like Gnome Shell overview animation are jerky where they were lightning fast, Elder Scrolls Online is stuttering and ...
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0answers
517 views

Overclocking monitor refresh rate on Ubuntu

I have a Qnix QX2710 monitor which was overclocked to a 96Hz refresh rate when I ran Windows. Now that I've moved over to linux I'd like to overclock the refresh rate again but I don't know how. I ...
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3answers
2k 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 ...
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1answer
2k views

Full screen mode in a dual monitor work [duplicate]

I used to work with two displays. As usual I make full screen on the second monitor for watching web video while continuing to work on the laptop monitor. In Ubuntu it's always opening in full screen ...
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0answers
221 views

Uknonw display in ubuntu 14.04

I'm using Dell E1914H monitor & this is a fresh pc. My cpu has DVI port & monitor has VGA port, I'm using connector to connect both of them. Firstly I tried to install Windows on this machine, ...
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0answers
50 views

The UBUNTU Graphics Catch 22

Trying to use a Live DVD to run Ubuntu 14.04.1, I get the "Monitor signal out of range" error. I hit ctrl-alt-F1 to bring up the command line. I do sudo nano /etc/default/grub and remove # from ...
0
votes
1answer
278 views

Ubuntu 14.04,NVIDIA Corporation GF108M [NVS 5400M] laptop monitor problem

I am having a problem with making the laptop monitor work with the latest ubuntu. I am using optimus on lenovo t430 at the moment and when I try to activate the laptop monitor I get an extended ...
1
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2answers
228 views

External monitor horizontal lines problem

I got problem with my external monitor (Dell U2312HM) connected to my laptop (Radeon HD4570). There are appearing some horizontal lines. It is like blinking or flickering, it's actually quite hard to ...
0
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1answer
436 views

external HDMI monitor turns off after a few minutes

When connecting my 14.04 ubuntu laptop with HDMI to my TV, the image is turned off after a few minutes, even when connected to the power. I then move the mouse and the image returns. How can I prevent ...
1
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0answers
26 views

Monitor not booting up with PC - Ubuntu 14.04

I've recently made the conversion from windows 7 to ubuntu 14.04 and loving it! ...Until this morning when I've tried to boot up my computer which seems to be booting fine, but my monitor is ...
0
votes
1answer
30 views

Troubleshooting refresh rate

I have been having problems with my refresh rate and it's recommended and default rate is 60ghz. It keeps flickering at every rate I put it. Does anyone have ideas how to resolve this? thank you
1
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0answers
344 views

Mirroring screen -> resolution problem

I have a ASUS N53S laptop, it has a 1920*1080 resolution build in screen. If it matters: GPU is Nvidia GeForce GT 550M. It has a VGA port which I don't/rarely use and a HDMI port. In my HDMI port I ...
4
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0answers
59 views

how to install ubuntu on a computer without using a monitor? [duplicate]

I have a computer but with no available screen, how can I install Ubuntu server on it using a laptop I have, I can't format the hard drive in another computer and buying a new monitor is not an option ...
0
votes
1answer
1k views

Dual-monitor setup; one monitor changes to low resolution

Dear AskUbuntu Community, I am using Ubuntu 13.10 at work with dual-monitor display. One has 1920x1080 resolution and the other 2560x1440 (main), the graphics card is Radeon 7570 1GB. The main high ...
5
votes
1answer
226 views

Can't change brightness after disconnecting second monitor

When I boot up with 2 monitors, or when I connect the second monitor to my laptop, I can change brightness of the laptop screen in the usual sense. After disconnecting the second monitor, when I ...
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votes
2answers
5k 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 ...
1
vote
1answer
803 views

nagios NRPE CHECK_NRPE: Socket timeout after 10 seconds

Getting following error on nagios server root@VMb:/usr/local/nagios/libexec# ./check_nrpe -H 54.255.1.99 -n CHECK_NRPE: Socket timeout after 10 seconds.
3
votes
2answers
8k views

nagios nrpe dameon check_nrpe plugin missing

I installed nagios nrpe on a remote machine from Ubuntu repository sudo apt-get install nagios-nrpe-server , and plugins with: sudo apt-get install nagios-plugins-basic nagios-plugins ...
4
votes
1answer
1k views

How do I enable 60hz on my 4k monitor?

I have the very new Asus PB287Q 4K monitor and I've enabled display port 1.2 in its OSD menu system, but my Ubuntu 14.04 laptop still isn't using 3840x2160 at 60hz - it's stuck at 30hz. I'm curious ...
1
vote
0answers
184 views

How to duplicate two displays of three in total in Ubuntu 14.04?

Two displays, which I want to make mirror, have the same resolution (1920x1080). One of them is TV on a wall :) It's not very comfortable to move content to TV each time, because it's behind me. I ...
1
vote
0answers
103 views

Opening Firefox on second display at startup

I have attached two monitos: 1 dvi (primary) 1 HDMI. I have added this at startup app list to load Firefox at bootup: firefox -P TV -url "http://mylocaldom.com" -no-remote This is the output of ...
0
votes
1answer
90 views

refresh rate on CRT monitor

So, I've got a geForce 650 Ti Boost, on a CRT monitor. My ubuntu is the latest, and I use Nvidias propietary driver. I've tried all the things that I know of to set my refresh rate to 85 hz. I'ts a ...
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1answer
2k views

Trying to install Ubuntu 14.04, monitor says mode unsupported/out of range [duplicate]

Monitor says mode unsupported/out of range during installation of ubuntu 14.04 and never boots to the ubuntu desktop.
1
vote
1answer
1k views

Monitor not turning off in 14.04

I have a freshly installed ubuntu 14.04. In settings "Brightness and locking" I had the following Settings: Turn monitor off after "10 Minutes" Locking: On Monitor locking after "5 ...
1
vote
0answers
94 views

Monitor goes sleep during fullscreen black scene

My monitor (Samsung SyncMaster 171s) turns into sleep mode for few seconds when there is totally black scene in fullscreen (for example: between two scenes in a movie). How can I disable it? I'm ...
1
vote
1answer
369 views

external monitor can't display max resolution

I had been using an external monitor, an old Dell Inc. 19" with Ubuntu 14.04 for a while now, The resolution it displayed at was something like 1366x768 or 1366x1024, I can't remember exactly which ...
0
votes
1answer
185 views

Resolution problems Ubuntu 14.04

I have Ubuntu 14.04 and everything is working fine exept for the resolution, my monitor supports 1440x900 but in the options only allows 800x640 and 1024x768, I tryed the xorg.conf solution and it ...
0
votes
0answers
197 views

How do I get other resolution option other than default one in full screen? [duplicate]

I want to get my 1366x768 monitor to have other screen resolution 800x600 or 1240x768 in full screen. What option do I have? Thanks. Here what I did, shaharil@busuk:~$ xrandr Screen 0: ...
2
votes
4answers
2k views

Xubuntu 14.04 black screen after monitor off/on

I have a HP desktop machine with Ubuntu 14.04, with also Xubuntu and Gnome desktops installed. I mostly use the Xubuntu session. When using the Xubuntu session, when I power off my monitor, and power ...
1
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0answers
29 views

Ubuntu 12.04 Server monitor goes into sleep mode (no display) after fresh install [duplicate]

For some reason I can boot and either use Ubuntu 12.04 server edition, or desktop version. I can live boot the disk, I can go through the installer, or even use the ubuntu alternate installer. But ...
1
vote
1answer
1k views

Wrong resolution on ubuntu 14.04

I have installed Ubuntu 14.04 LTS on my system. My graphics card is an NVidia 8800GTS. For some reason ubuntu detect that my screen resolution is up to 1024x1280. I have already installed the NVidia ...
1
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0answers
55 views

14.04 Laptop and screen problems

I have recently upgraded from 12.04 to 14.04 (Ubuntu) and I have contracted several problems. First being my laptop's power occasionally cuts out (Like the battery has been pulled out, and I have to ...
0
votes
1answer
771 views

Compatible stand alone multi-touch display for Ubuntu?

I'm looking for a multi-touch monitor solution that i can connect to a workstation running Ubuntu 14.04. Does anyone know of a stand alone monitor I can use where touch actions would go over a usb ...
0
votes
1answer
523 views

How to change Monitor of ubuntu box Also 'Out of Frequency ' Error due to monitor change

I have find very odd and crude solution to this entire episode. It is as follows Start installing ubuntu as usual. Switch off the monitor Wait for some time (1-2 minutes) till the HDD access stops ...
0
votes
2answers
119 views

Camera keep changing it's colors from light red to light green every 0.25 sec (ubuntu 14.04)

when I lunch Cheese Webcam Booth this is what the picture looks like and it keeps changing between these 2 colors every 0.25 sec
1
vote
0answers
72 views

Automatically detecting and outputing to s-video at startup

After combing the Internet I have developed a script that is capable of checking whether I have a monitor connected to my VGA port and switching to my s-video port if not #!/bin/bash # if no vga then ...
0
votes
1answer
335 views

Getting launcher on dual monitors

I recently bought a second monitor for my computer. Setting it up was fairly easy, but when I turned the monitor I found that the unity launcher bar that is on the right monitor did not transfer over ...
0
votes
0answers
11 views

Way to find which program uses the internet [duplicate]

is there any way to find which program uses the network and the bandwidth consumed. System monitor shows only ram ,cpu usage and overall bandwidth usage. i want fr individual program
0
votes
1answer
277 views

Second Monitor Intel graphics card

I have a second monitor which works perfectly fine on Windows. However, on Ubuntu 13.10 I am running into a couple of weird issues: If I connect it after booting Ubuntu, it duplicates the display of ...
9
votes
3answers
11k views

Ubuntu 14.04 - Add Fake Display when No Monitor is Plugged In

I have an Ubuntu 14.04 server that has no external monitor connected. I use NoMachine to remote control the machine. When I do so, the Unity/Gnome interface doesn't see any monitors connected, so I ...
0
votes
1answer
307 views

How do I set up my dual monitors? My config folder does not have monitors.xml in ubuntu 12.04

I tried creating a monitors.xml in config folder using gedit and just saved it there. rebooted but doesn't work. I am trying this link. http://www.sudo-juice.com/dual-monitor-settings-in-ubuntu/ But ...
1
vote
0answers
58 views

Dual vertical monitors messes my desktop

When I enable my two monitors in vertical positions My desktop files get dispersed vertically among both screens and the file icons on the upper screen are displaced, they look like they are ...
1
vote
2answers
1k views

I need a netspeed indicator for Ubuntu 14.04

I have a 3G mobile broadband connection that keeps changing network speed according to location and time and so I relied heavily on this applet ...
0
votes
1answer
932 views

How can I calibrate colors?

In System Settings -> Colors there is color panel but "calibrate" button is grey and I am unable to calibrate it by myself.
0
votes
1answer
63 views

Xubuntu Monitor issue

I did a presentation with my laptop with an external monitor (using latest Xubuntu). After the end of the presentation my laptop ran out of battery. When I got home an logged in again, I had only a ...
0
votes
2answers
736 views

PROBLEM(13.10) : external monitor not working [- nouveau-driver on macbook pro]

I am using Ubuntu 13.10 on a macbook pro. Would like to install external monitor VGA with the mini-port. no success. Trying: Settings→displays - nothing recognised. Trying xrandr --auto - ...
0
votes
1answer
89 views

Ubuntu 12.04 LTS monitor with lower resolution

I have monitor with possible resolution 1920x1080 (on windows) and I have installed Ubuntu 12.04 LTS. The posssible resolution there:1440x900. How to change resolution to proper one? I installed ...
0
votes
1answer
688 views

get-edid always fails, yet ubuntu detects monitor make/model in system settings

I am trying to writer some scripts to detect what monitor is plugged in and when. I am not sure if I am going down the correct path, but I notice that no matter what I do trying to use 'get-edid' ...
0
votes
1answer
705 views

How do I get a Dell U2414H monitor and Nvidia NVS300 working?

I can't get Ubuntu 12.04 LTS to run xwindows in my monitors native resolution. I have a Dell U2414H monitor and NVIDIA NVS 300 video card. I am connected via a Single Link DVI to HDMI cable. When I ...
4
votes
2answers
4k views

How to make custom refresh rate stay saved?

I'm testing out 14.04 on a partition to see if I want to use it as my main desktop for when it's fully released, but I've encountered some problems. I have a 144Hz monitor, so in the the Nvidia X ...