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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0
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0answers
7 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
votes
1answer
13 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 ...
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2answers
2k views

BandWidth Monitor

New to Ubuntu, I want a application which monitor my Bandwidth usage in GUI for Particular time. Is any application is available for my requirement? For ex: If I need to monitor for a month at a ...
2
votes
0answers
23 views
+50

chrome resolution changes when monitor is turned off

Having an issue with Google Chrome resolution/dpi changing when I turn my monitor off. To see what is going on with my display settings while my monitor is turned off, I used `xrandr'. The output ...
0
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0answers
17 views

My Dell monitor is automatically “shutting down” after 15 minutes of working while on Ubuntu, what may be the cause?

message displayed on the monitor after the screen turns black This is happening whenever I am using Ubuntu for more than 10 minutes. But the same thing is not happening when I am using Windows on the ...
0
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0answers
29 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 ...
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0answers
7 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.
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0answers
7 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 ...
0
votes
0answers
10 views

Can we display the IFTOP network traffic terminal in a PHP or HTML page

i have made a LAN with 3 users and a ubuntu server PC / Squid proxy server , i can monitor the network traffic of the Users in the LAN using iftop detaily according to their IP addresses , is there a ...
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0answers
8 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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votes
0answers
9 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 ...
1
vote
1answer
28 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
74 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 ...
8
votes
6answers
37k 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 ...
2
votes
0answers
199 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
68 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
votes
0answers
6 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 ...
33
votes
4answers
62k views

How to calibrate the monitor on an Ubuntu system?

What is the procedure to calibrate the monitor and what software to use? Edit: I think what I mean is "colour profile" if that's what it is called. I happened to notice that the same photos look very ...
1
vote
1answer
56 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 ...
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 ...
0
votes
1answer
40 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 ...
0
votes
0answers
13 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 ...
0
votes
0answers
26 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. ...
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
2answers
8k 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
0answers
14 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 ...
4
votes
2answers
10k views

How to prevent my screens from turning off, when the screen is locked?

I would like to have my screen fully powered at all times, but it goes to standby once I lock my PC.
2
votes
2answers
2k views

Ubuntu 14.04 with unrecognized monitor (or without monitor) - boot problem

I've Ubuntu 14.04 installed on my computer. I need to start it even if not any monitor is plugged. Basically I need to do that because at the startup my monitor isn't recognized but plugged in. ...
0
votes
0answers
24 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 ...
0
votes
0answers
35 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
votes
0answers
15 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
54 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, ...
10
votes
2answers
16k views

Two monitors when only having one in 13.10

I just did a fresh install of Ubuntu 13.10 64bit, and it says that I have 2 monitors, when I actually only have one I have a Dell XPS 15 with Nvidia graphics card if that helps in anyway
1
vote
1answer
22 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. ...
0
votes
1answer
46 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
22 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
50 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 ...
1
vote
3answers
5k 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 ...
0
votes
0answers
23 views

Ubuntu 15.04 set primary display [duplicate]

I've 2 display: - Laptop's = 1366x768 - External = 1280x1024 When i use both of them, the external one is on left side of my pc, i organize monitor with Ubuntu's setting, and the system move all my ...
0
votes
1answer
19 views

System Monitor with data logging

Is there some application that allows system monitoring with value logging ? Most of system monitor application usually shows current system usage (CPU/RAM/HDD/NET etc) with (sometimes) small history ...
0
votes
0answers
14 views

Notebook Bult-in Monitor Not Recognized After Installing Nvidia Cuda 7.5

I tried to install Cuda 7.5 (that comes together with Nvidia-352 driver) in my clean Ubuntu 14.04 dist, however I keep getting this black screen when the log in page should have been available. I ...
0
votes
0answers
51 views

Dual monitors not working properly

So I've been using Windows 10 for a while with 3 monitors and I wanted to give Ubuntu a shot, because I heard a lot of positive things about it. Anyway, when I first booted up Ubuntu, all my 3 ...
1
vote
0answers
37 views

Forcing 60Hz refresh with 4K monitor

I have a P2415Q Dell and it's been working brilliantly. Then this morning it inexplicably started refreshing at 30Hz and I cannot seem to set it back to 60Hz (there is no option higher than 30Hz in ...
0
votes
0answers
34 views

Ubuntu 14.04, dual-screen, One screen is “fuzzy”

I'm running two identical monitors, one via KVM. The monitors are identical Dell U3014's capable of running at 2560x1600. One is connected directly by a mini-display port cable, the other is connected ...
0
votes
0answers
60 views

DisplayPort adapted to VGA works in GRUB and Windows but not in Ubuntu

I have a Zotac CI320, which has Intel HD Graphics on its Celeron N2930. Up until now, I've been using the HDMI output, which works fine. I'd like to switch to using it with a VGA monitor input, so I ...
0
votes
0answers
24 views

All devices no longer detected

I'm running Ubuntu 14.04 on an Asus ux303 laptop I rebooted and while the desktop loaded just fine, it isn't detecting external monitors or wifi card. Lsusb shows the keyboard and mouse but neither ...
2
votes
1answer
3k views

Does Ubuntu support 3D monitors?

A couple of manufacturers are coming out with 3D monitors, primarily useful in gaming. It looks to me like they broadly rely on proprietary Windows drivers to work. Am I right? Are there existing ...
0
votes
1answer
95 views

Help in correcting or bypassing a bug resulting shifted screen in my ubuntu

On Ubuntu 15.10 using an nVidia gtx 960 card, and life was great until nVidia released driver 355. Everything was fine with the 352 series and when I updated to 355 I got the shifted screen bug. As ...
19
votes
3answers
2k views

How can I get my laptop's monitor size?

What is the Ubuntu linux command to find laptop monitor size? I want to know in inches if possible. Thanks
1
vote
1answer
63 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 ...