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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125 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 ...
0
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0answers
30 views

New monitor - reset graphics 14.04

Have new monitor, but resolution stuck at that of old monitor. New monitor is 16:9 but resolution stuck at 5:4 so how do I reset the monitor detection and get a good resolution on the new monitor?
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0answers
194 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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2answers
554 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
443 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
83 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
21 views

Black Screen after wubi Install on Windows 2000

I just installed Ubuntu on my mother's PC, Because it had Windows 2000. So I installed the Iso and put it on my USB and started the .exe on her PC, using WUBI. After that I went trough the ...
1
vote
0answers
35 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 ...
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0answers
68 views

Detect connected monitor

I have an ubuntu 12.04 server running with an integrated intel VGA. There is a screen connected permanently as an "info monitor". Sometimes power is removed from the screen and i want to detect that ...
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0answers
45 views

Screen Flicker on Mac Mini 5,3

I have a screen flicker issue on my Mac Mini with Intel HD Graphics 3000 512 MB. It appears on multiple screens and via both HDMI and Dual Link DVI over the display port. It does not seem to occur if ...
0
votes
1answer
200 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
vote
1answer
130 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
211 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 ...
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0answers
22 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
22 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
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0answers
18 views

No signal on Monitor

I'm getting a "no signal" on monitor. the system was still running when the monitor crashed with this error message. Checked cables and all are hooked up.
1
vote
0answers
197 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
votes
0answers
58 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
394 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 ...
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votes
0answers
117 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 ...
0
votes
0answers
104 views

Turn off display on lock screen?

In ubuntu 12.04 running gnome I had the shortcut to turn on/off the display with Esc key on lock screen. Now running Ubuntu Studio 14.04 with xfce4. There is no such feature. Any way to add it? Maybe ...
0
votes
2answers
1k 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 ...
0
votes
0answers
447 views

Setting the monitor resolution in Lubuntu 14.04

I would like to enquire on how to change the monitor resolution in Lubuntu 14.04 in a permanent manner. The monitor settings under Preferences in the menu does not do the trick. When I say I want to ...
1
vote
0answers
647 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
2k 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 ...
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0answers
17 views

failed to load monitor configuration after Ubuntu (12.04LTS) update

I've updated my Ubuntu 12.04LTS and after restarting machin, now I see this error on startup: and when try to download nvidia driver from here: I see this error: i'm beginner, please help !
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 ...
0
votes
0answers
81 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
54 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
0answers
79 views

Desktop won't display properly on monitor (VGA)

It flickered a lot during the 12.04 LTS install (it was still usable though), and the login screen is fine. But as soon as I log in, the desktop doesn't display properly, all I see is a black screen ...
0
votes
0answers
44 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 ...
0
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0answers
32 views

Changing CRT monitor frequency in Ubuntu

I have an old CRT monitor. In Windows XP there was a frequency option for the monitor. Is there something similar in Ubuntu? I want to change the monitor frequency from 60Hz to 85Hz.
1
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0answers
343 views

External Display on HP 2013 UltraSlim-Docking Station with Ubuntu

I have an Elitebook 840 G1 with Dual ATI + AMD graphics and HP 2013 UltraSlim-Docking Station. I want to plug external monitor to the one of Displayports located on the Dock. The external monitor ...
-2
votes
1answer
769 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.
0
votes
1answer
621 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
53 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 ...
0
votes
0answers
104 views

Ubuntu only runs when on nomodeset

I don't know what nomodeset does but when I try running Ubuntu (just as a test before installing) my Tv which I use as a monitor will only pick it up in nomodeset but it also seems a bit slow. I ...
0
votes
0answers
16 views

Login screen not showing after connincting to a bigger display ( a monitor )!

So, I have ubuntu 12.04 lts on my laptop and I got a new monitor so I connected the monitor to the laptop to get a bigger display but the login screen won't show. Can anyone tell me how do I fix this? ...
1
vote
1answer
189 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
130 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
51 views

Display or system monitor do not wake up

I've Dell Inspiron with Kubuntu 14.04. When Close the lid and open it again it remain blank. As in power management I've set "When lid closed" to "Do Nothing". And it do not respond any key I press. ...
0
votes
0answers
98 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
1k 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
vote
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 ...
0
votes
1answer
511 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
vote
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 ...
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votes
0answers
105 views

Slow Desktop Frame Rate with 1920 x 1080p Monitor

I'm kind of new to this Ubuntu thing, but I've used it before a little bit! So I installed Ubuntu 14.04 LTS, and everything installed normally. On my 15" Acer Monitor everything ran normal! The moment ...
0
votes
1answer
395 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
278 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 ...
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0answers
168 views

Mouse cursor flickering and disappearing but no unknown monitor

I installed Ubuntu 12.04 few days ago. Everything was Ok. But suddenly the mouse cursor has started flickering and disappearing. I have searched through this community and found some solution like ...