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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33 views

Problem with upgrading to Ubuntu 16.04: resolution messed up. “Could not apply the stored configuration for monitors”

I'm a bit of a newbie to Ubuntu. I use it via a virtual machine (Parallels on Mac OS 10.10.5)--although this shouldn't matter, as far as I know. I just updated to version 16.04. On start-up, I get ...
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0answers
10 views

I can't turn my built-in display back on after turning it off

I am using a T.V. (Insignia LED) as a second monitor. After deactivating my built-in display I am unable to reactivate it through my display settings.
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2answers
274 views

Can I make a screen switch from one computer to another by cli?

I have my monitor hooked up to computer A via DVI and to computer B via VGA. If I start PC A first and PC B last, the monitor displays PC A's signal. Is there an easy way to change between the two ...
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0answers
31 views

Dual monitor not working

II am using ubuntu 16.04. I have 2 monitors 1 is connected with my nvidia 660ti(23in) through HDMI port and the other one is connected with built-in motherboard (VGA port). after starting ubuntu 2nd ...
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1answer
41 views

Correct Monitors Not Detected on 16.04 Nvidia or Nouveau

Upon installation of 16.04, a Dell 2408WFP was not detected by the default Nouveau driver. I then installed the actual Nvidia driver hoping for a different result, but that yielded the same result. ...
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1answer
37 views

Acer H243H external monitor distorted in Ubuntu 16.04 and up

I've been using an Acer H243H monitor for a while with Linux for a while without problems, but now, I've been having serious distortion problems. In Ubuntu 16.04 and any Linux distro based upon that ...
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0answers
19 views

monitor broke, switched to new monitor, now have unsupported resolution black screen

New Monitor has HDMI and VGA, New Monitor does not have DVI. Computer video card has VGA and Digital video, videocard does not have HDMI. My only plug in option is vga. Ubuntu now can not detect the ...
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0answers
28 views

Has anyone tried dell xps 13 9350, ubuntu 16.04 LTS with HP Pavilion 27xw 27-in IPS LED Backlit Monitor

Maximum supported resolution on the monitor is 1920 x 1080 . I am able to set the ma resolution to 1280x720 . Is there a way we can improve it. Apparently HP supports only windows.
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0answers
14 views

External screen flashes after changing resolution

I used xrandr to add the resolution of my external monitor (1920x1200). When I first did it, last year unsing Ubuntu 15.04 and Ubuntu 15.10, it worked fine, except that I couldn't get the settings to ...
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0answers
33 views

Getting Monitor to Use it's Native 2560x1080 Resolution ; Ubuntu 16.04?

I have two monitors and it isn't letting me select 2560x1080 for my one monitor when I go into settings. I've searched and found a couple of answers but none seem to fix my issue. I have a Nvidia GPU, ...
2
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1answer
119 views

External monitor(s) dark out on one account and I cannot set monitor layout, how to fix?

Seemingly "out of nowhere", my Dell e7440 running Ubuntu 16.04 with 2 external monitors displays only the login screen for external monitors, when I login it shows system error and external monitors ...
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1answer
77 views

Set default Resolution system wide [duplicate]

I'm using Ubuntu 16.04. addicted@ADDICTED:~$ xrandr Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384 DVI-I-0 disconnected (normal left inverted right x axis y axis) DVI-I-1 ...
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0answers
27 views

Could not apply the stored configuration for monitors [duplicate]

Could not apply the stored configuration for monitors Error on line 1 char 1: Document must begin with an element (e.g. ) No clue why it happened or what to do. Intel 4400 i3 4010U Dualbooted with ...
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0answers
20 views

Suggest me the tools for display testing on Ubuntu [duplicate]

I'd like to test my new Dell monitor but I don't know what the tools should I use for it. I'd like to detect if there are bad pixcels and other color characteristics of the display.
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0answers
190 views

16.04, Nvidia GTX 950, HDMI: Unknown Display

I just freshly installed 16.04 including all updates. I installed the nvidia-367 drivers which work. Unfortunately, my Asus display that is connected to the Nvidia GTX 950 via HDMI, is not properly ...
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0answers
53 views

Need help getting back the plymouth splash screen with the right resolution (after nvidia install)

Normally I never have any problems getting back the plymouth splashscreen after installing nvidia drivers in Ubuntu or Linux mint etc. But now I've installed Ubuntu on an old PC with a APG (Geforce ...
0
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1answer
99 views

Ubuntu 64 bit 16.04 LTS on laptop Hp Pavilion X2 external HDMI monitor stopped working after latest updates

It seems that Ubuntu is really a problem on HP computers. Now, the new problem is that after the last updates of 16.04, the HDMI port stopped working. I tried with a different monitor and the problem ...
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0answers
83 views

Ultrawide monitor only showing desktop on part of the screen

I'm currently running Ubuntu 16.04 LTS on a MSI Dominator Laptop, and with the laptop screen disabled and only using my external monitor (LG 34UC88 @ 3440x1440 21:9) Ubuntu refuses to display across ...
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0answers
28 views

Intel NUC with ViewSonic 24" has snowy screen aliasing

I believe what I'm experiencing is "aliasing" of certain colors on my monitor, but I might not be using the best terminology. Here's what's happening: Certain colors, like the default Kubuntu ...
0
votes
1answer
23 views

airodump-ng not working

I am a beginner to Linux. I am having trouble with the command airodump-ng mon0. As soon as I do it I see the error: Interface mon0: ioctl(SIOCGIFINDEX) failed: No such device. I have tried: ...
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2answers
44 views

How to show size Ram and CPU ussage in Ubuntu?

I am newbie in use Ubuntu so I don't know how to show Ram and CPU usage which is the same in Task Manager on Windows. It can show by command line in Ubuntu or Application to see more.
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1answer
235 views

Second monitor not working after Xubuntu 16.04 upgrade

I just upgraded from Xubuntu 15.10 to 16.04 via dist-upgrade. After I restarted, the monitor that is connected (via HDMI-to-DVI-cable) to my laptop wasn't recognized anymore. I already restarted two ...
1
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1answer
89 views

Built-in laptop monitor is not detected anymore

The problem The built-in monitor of my laptop is not detected and goes blank at the login screen. However an external monitor connected to the VGA port is correctly detected and gets recognized as ...
1
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0answers
26 views

Monitor : no image after turning off then on

I would like to use my monitor as display for two computers, so I would like to switch the input as I want beetween the computer 1 and the computer 2. When I switch on the computer 2 everything is ...
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0answers
29 views

How to install a resource monitor in Xubuntu 16?

I want to install something like this: But I researched and I don't find anything. Thank you.
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0answers
57 views

Primary screen turns off after disconnecting external monitor

I have a Dell external monitor connected to my ASUS UX305UA laptop. I use HDMI port, which is connected to HDMI-VGA converter, which connects to the monitor. When I turn on my laptop and connect the ...
0
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0answers
25 views

How do I fix overscan?

Please don't mark this as duplicate! I have read many similar question but could not find a good answer for my situation. I am running Ubuntu 15.10. I have a Sansui SLED2900, which works fine over ...
0
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0answers
147 views

Unknown Display on ubuntu 16

Hey I'm having trouble with my display. When I go to System Settings > Display the monitor shows as unknown display. I've googled and tried a couple of solutions they offered and nothing, changed ...
0
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0answers
101 views

Ubuntu flickering @ 144hz AMDGPU

I need some help. I've been trying to get 16.04 on my system since the second alpha came out but sadly whenever I try to run it the screens starts flickering like crazy when I start going through ...
0
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0answers
23 views

How to completely reset xrandr

Is there any command which completely resets all settings of xrandr? I have checked this and this but the command xrandr -s 0 does not reset brightness.
0
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0answers
25 views

Ubuntu 14.04 Can't Connect External Monitor

I install ubuntu 14.04, after that my cursor blinking and sometimes it's gone, so i search how to remove it and i found a solution that offer me to delete the unknown display from my terminal, so i ...
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0answers
12 views

Triple Monitor Wont´t Work

Triple Monitor Setup https://youtu.be/AaNNW9SfdZY There is a video of my error. Because i have 3 Monitors. A Laptop and 2 Monitors. And with 2 Monitors it works just fine
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0answers
82 views

mdadm monitoring script after boot

the mdadm monitoring program is not working after boot. When i kill the process afterwards and run mdadm --monitor --scan again, everything is ok and the script runs on failures. Here ist my mdadm....
1
vote
1answer
165 views

How do I set refresh rate on each monitor invidually?

What am I suppose to write to set each monitor on its own Refresh rate? I can write xrandr -s 1920x1080 -r 144 but that does apply on both monitors which makes my 60hz monitor go black.
2
votes
0answers
96 views

Two monitors - primary, secondary?

I use Ubuntu 16.04 LTS and to motherboard (GA-Z170-D3H with Intel HD Graphic 530) I have connected two monitors. First (primary) on DVI and second (secondary) on VGA output. Secondary monitor I can ...
2
votes
0answers
839 views

Dual display not working after 16.04 upgrade

I recently upgraded from 15.10 to 16.04 via dist-upgrade. Immediately afterwards, my second monitor stopped working. I am using an AMD 7850 APU, and both monitors are plugged in to the motherboard - ...
0
votes
1answer
145 views

Xubuntu 16.04 external monitor

Ok, my first question here is simple: I have xubuntu 16.04 LTS on Laptop X86_64. The laptop can handle ubuntu xenial xerus to but I like xubuntu. It works like a CPU because I link It to a big ...
0
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0answers
9 views

using CDPR to discover my MACHINE from a router

hey i am using Ubuntu trusty tar, i have installed cdpr on my pc. this helps me track my pc when connected to my network. when i type the command sudo cdpr -d eth0 i can see the router to which i ...
0
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0answers
14 views

How to monitor the Drop Box port in my office environment

someone is misusing the drop box in my office. I want to figure it out who is using it and what he does with drop box. Can anyone tell me the process to keep track of the employees on this. As an ...
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0answers
58 views

How to check ssh tunnel status and create alert

Can anyone please help me to write a shell script checking ssh tunnels status and create alert in case a tunnel dies? Also some log must be created in var/syslog once a tunnel is created or dies. ...
1
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0answers
21 views

Monitor CPU and bandwidth usage of cpu and save to csv

I would like to monitor a specific process. I need to know timestamp, CPU usage (%) and Bandwidth (tcp upload and download in % or byte/s) of this process. I have tried something like this: ps -Ao ...
0
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0answers
38 views

Ubuntu 14.04 Connect an External Monitor

When i connect my laptop with external monitor, the monitor not detect my laptop display, how to enable it? i once uninstall unknown display at the first i install ubuntu because it makes my cursor ...
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1answer
87 views

Set “default” monitor

I would like to be able to set my "default" monitor to be my external 25' monitor instead of my laptop one when I have my external monitor connected. Many applications always open on the laptops ...
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0answers
72 views

Second monitor is detected but doesn't work [ubuntu 15.10]

I just installed ubuntu 15.10 on a HP EliteDesk and one of the monitors doesn't work correctly. Displays recognize both monitors (Hp Z27n and Hp ProDisplay P201) but only the Hp Z27n is working. ...
0
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0answers
22 views

Ubunutu 14.04 + Latitude E6420 + U2715H Monitor

I just got the U2715H monitor, I had no problem connecting it to my laptop (Latitude E6420 , Intel HD3000) , it was recognized and I got a cleat picture. The problem starts when I drag a window ...
0
votes
1answer
48 views

Screen resolution is sometimes too narrow on boot, fixed by rebooting

I'm running 64-bit ubuntu 14.04. I'm experiencing a problem that started just a few days ago: every now and then, on reboot, my screen resolution is too narrow, with black unused screen space to the ...
1
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1answer
34 views

Programs sometimes open on the wrong monitor

I'm running Ubuntu 14.04LTS 32bit version with 2 screens. Graphic card is the Nvidia Geforce 9500GT. One screen is the main monitor, where the other is connected to my beamer for the home cinema. I'...
0
votes
1answer
272 views

how can i reset my display settings through terminal

i am using ubuntu 15.10.I accindently changed the size of the interface to maximun. Now my folders and windows are too large and dont fully fit the screen so i can not revert the effect. Is there any ...
1
vote
0answers
28 views

Can't see login screen

I'm running Ubuntu 15.10. A few days ago the system started to set the monitor in sleep mode during boot up. Because of this I am unable to see the login screen. However, I am able to hear the "...
0
votes
1answer
96 views

How to run in low resolution 640x480

I need to reduce the resolution to 640x480 to connect to my tv that can detect only that resolution.Any idea on how to do it so that my laptop screen resolution doesn't get affected? Ubuntu 14.04 can'...