Questions related to hardware displays, either internal (as in a laptop) or external (as in most desktop monitors, or projectors)

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connecting external display renders both screen blank

after connecting an external display via HDMI to my laptop it worked fine, except that the display of the laptop was the primary , so if i wanted to play a game it would start on the laptops display . ...
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12 views

What is the general steps of resolving X-Windows (display) problems in Ubuntu?

When using Ubuntu, the display crashes frequently, especially when using NVIDIA drivers. The phenomenons may be various: low resolution, cannot login, unable to start. So when I meet some of the ...
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1answer
57 views

Lock screen while video keeps playing on second display

it seems impossible to me, but I was just wondering if it's possible to lock the screen (i.e. no one has access to my computer) while the second screen still displays a full-screen video. By default, ...
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0answers
21 views

No video signal on newest versions of Mint and Ubuntu

My Specs: i5-4460 GTX970 Gaming 4G Extreme 16GB RAM 1TB HDD I can't seem to establish a video signal using NVIDIAs divers. VGA, DP, DVI - doesn't matter. Tried the proprietary driver as well as open ...
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1answer
343 views

How to set the screen resolution in Ubuntu 16.04 64 bit running under VMware workstation 12 player on a Windows 7 host?

I can set the screen resolution manually once I log in using the following command: xrandr -s 1360x768 but I am not able to make it "stick". Every time I log back in, the resolution for a little ...
1
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1answer
47 views

Keep screen rotation after monitor switched on/off

I have Ubuntu 14.04 with auto login to my session and Intel graphics. My goal is to be able to start ubuntu without any screen connected. I also want to rotate left. Actually if I start my DP or ...
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0answers
48 views

Dual Monitor app windows moved after unlock

Locking and unlocking will result in application windows being moved, sometimes to 'disabled' workspaces. Setup: 2 Monitors (HP 22cwa) Workspaces disabled Steps: Put application windows on 2 ...
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0answers
138 views

Cannot control display resolution with 16.04 LTS

I am using HP Pavilion Desktop. Came with Windows 8. I have been using dual boot with ubuntu for about a year without major problems. Recently updated to 16.04 LTS (from 15.10) and at first could not ...
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1answer
48 views

setting the default gpu

I have two gpus on my machine: $ lspci | grep VGA 01:00.0 VGA compatible controller: NVIDIA Corporation GM200 [GeForce GTX 980 Ti] (rev a1) 03:00.0 VGA compatible controller: NVIDIA Corporation GF108 ...
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2answers
43 views

Monitor Flickers after resolution detection

Problem Everything used to be fine until I broke my monitor (LG W2284F : 1680x1050) and I bought a new monitor (LG 25UM65-P: 2560x1080). The Problem is when I try to install Ubuntu or any other ...
2
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1answer
111 views

Problems add a new resolution to monitor(2nd monitor) (16.04 desktop)

I am having trouble adding the correct resolution for my second monitor. Both of my monitors worked fine in windows and I'm not going back :) I am running a single GTX980 with one monitor connected ...
4
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1answer
155 views

Xubuntu 16.04 monitor display no signal after turned off

So I'm using my motherboard's (ASUS Z170-A) HDMI display to out put to my VIZIO 40" 4k TV. Every time I turn my TV off and turn it back on, regardless of time period I get "No Signal." I've done ...
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0answers
46 views

Disable laptop monitor when external monitor is plugged in, AND have it persist across reboots

As described in the answers to other questions, I am aware of the "Displays" settings where I can disable my laptop monitor. That works fine. However when I reboot, my laptop monitor is magically re-...
2
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0answers
40 views

bash.bashrc damaged..ubuntu log in loop and no interactive programs working from terminal

I have accidentally deleted the content of /etc/bash.bashrc and now I cannot log in as it gives me a loop and I cannot run any interactive programs from the terminal. When I try, I get this error: ...
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0answers
66 views

OpenGl 3.3 install help

I am using ubuntu 14.04 which is using opengl 3.0 but the game I want to play need opengl 3.3 but I don't know how to install it. Will upgrade to ubuntu 16.04 fix the problem. My computer is an hp ...
1
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1answer
167 views

Laptop mini DisplayPort issue - external monitor does not detect on 16.04

I want to achieve 2560x1440 resolution output from my laptop. I have a Dell XPS 15 (L521X) laptop on Ubuntu 16.04 and I want to output my screen to an external monitor from mini DisplayPort (laptop) ...
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0answers
13 views

How to stop screen from sleeping after I lock my session? [duplicate]

First time posting here, so here goes ... I have Ubuntu 14.04 LTS and the issue I am having is that I want to prevent my screens from fading to black and powering down when I lock my session. ...
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0answers
61 views

Wrong display mode

After upgrading my PC (i686) from Ubuntu 10.04.4 to 14.04.4 I only see the upper left detail of the whole screen (270x203) on my display (115x86). I tried so many things that I just want to step back ...
0
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1answer
49 views

Why doesn't my monitor work?

I had my HD monitor working fine, I plugged into a vga somewhere else and when I came back all I got on the HD screen was blackness. Are there any settings that could have been changed automatically ...
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0answers
88 views

Split windows, shifting desktops, and blocked cursors when using multiple monitors

I'm having trouble getting multiple monitors to work correctly on a new machine (Lenovo P50 laptop, Ubuntu-Mate). This is the behavior I'd like to see: Main display switched to external monitor ...
1
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0answers
51 views

Display not working properly

I have Toshiba 16" laptop with Kubuntu 12.04 installed in it. I am having some display issues like it goes blur while loading Plymouth and the mouse courser blinks all the time. This is the output ...
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2answers
185 views

How to Control Backlight and Set Max Limit Brightness in Display of Ubuntu 16.04?

My Macbook Air 2013 power lasts 1.5 hours with just too bright light. More than 7 hours with normal light (that is 30-40% of the current max) corresponding to my default brightness in OS X where the ...
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0answers
192 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
32 views

Blurry or messed up fonts after forced screen resize

I have an AOC e2727she monitor that I wanted to use with my Dell Inspiron laptop running Ubuntu 16.04. I plug it into my laptop using an HDMI to HDMI cable. When I plug it in, thought,the highest ...
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0answers
25 views

How to switch to external display when screen is locked

When the laptop is sleeping and connected to the docking station (lid closed), I click the dock's external power button. From the physical indication lights I see that the laptop awakens but see ...
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0answers
2k views

Error: cannot open display firefox in linux

When I run firefox in bash, I am facing this : Error: cannot open display or Error: GDK_BACKEND does not match available displays I installed xauth , xorg etc. But did not resolve my problem. I try ...
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0answers
33 views

I selected Steam “Big Picture” and now can see nothing on booting. What should I do?

Out of curiosity, I selected "Big Picture" on the Steam Linux client running on Ubuntu 15.10. The display changed and then froze. I rebooted the computer from tty2. Now when I boot, I see only a blank ...
2
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1answer
226 views

How to persist display settings?

I my display configuration to remain like this: Yet after each reboot, it resets to: How to have it persistent? My xrandr output: Screen 0: minimum 8 x 8, current 4920 x 1920, maximum 32767 x ...
1
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2answers
329 views

Getting native resolution on Ubuntu 16.04

EDIT: I Managed to get 1080p working after using 1920 1080 59 instead of 60 :) I have a 22 inch LCD TV connected to my PC (IntelHD 4400 graphics) via VGA a cable. On windows the TV works fine on ...
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0answers
48 views

No LCD display on startup. I have to close the laptop and open it again to make it come back

I have a Lenovo z475 Laptop and I have Xenial installed as a release upgrade from Wiley. After the upgrade, the Grub Menu never appears. The display goes black, and the only way to get it to turn on, ...
0
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0answers
74 views

Set TV resolution to 1366 by 768 (solved) / Modeline for 1366x768 resolution

EDIT: The problem was fixed by restarting lightdm, though the general question still stands. I have my laptop with Lubuntu 16.04 with Intel integrated graphics connected through VGA to a ...
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0answers
274 views

Xubuntu 16.04 - second monitor disabled after display sleep

My computer is set not to sleep or lock, but to blank the display after eg 10 mins. I have 2 monitors, which, prior to 16.04, worked as expected - the only noticeable thing was that, for whatever ...
0
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1answer
36 views

How to fix xrandr scaling

I have two monitors side by side. One is 3840x2160@30hz the other is 1280x1024@60hz. I am trying to set the smaller monitor's scale: xrandr --output VGA1 --scale 2x2 With this command only 1/4 of ...
3
votes
1answer
91 views

Ubuntu 16. Trying to set up 3 different monitors

I try to setup 3 different monitors on Ubuntu 16.04. What I have: Red is build-in notebook monitor. Orange is and green are external monitors connected via Mini-DisplayPort and HDMI. And they are ...
3
votes
1answer
144 views

xrandr “cannot find mode” although mode is added and shows on xrandr

I'm trying to use my tablet as an extended monitor for my laptop, following Prometheus's answer here. I got to the point where I'm supposed to output the mode with VGA-0, but xrandr "cannot find mode....
0
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0answers
37 views

Problem after installing fglrx

I am using ubuntu14.04. I am using AMD Radeon 8600Hd graphics card. After installing fglrx, page appears to move like waves while scrolling up or down. Also there is slightly delayed keyboard response....
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0answers
15 views

How to perform 2 different desktops with one notebook (HDMI)?

Here is a notebook with one desktop, and I want to use a second display monitor via HDMI, but thing is that the second display is showing the same desktop. I want two different working-spaces being ...
0
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0answers
488 views

Ubuntu 16.04 dual monitor resolution problem with dell precision 5510

i was installed ubuntu 16.04, my laptop is dell precision 5510 graphics are intel 530 and nvidia quadro m1000m and using dual monitor that resolution 1920x1080 kernel version 4.4.11 xenial, '...
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0answers
121 views

Black screen after login Kubuntu 16.04 on QHD monitor

I have a new PC with ASRock N3150DC-ITX mobo and a HiRes AOC Q2577PMQ QHD monitor. The monitor is connected via DisplayPort. I have installed Kubuntu 16.04 LTS from scratch, but I get a black screen ...
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0answers
13 views

Hazy display after Ubuntu installation

I installed Ubuntu on my system but my display is all hazy and messed up. I have tried additional software, software updater but none worked.
0
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0answers
74 views

New dual screen setup error “could not set the configuration for CRTC 64”

I have a Dell XPS13 with factory install of Ubuntu 14.04 LTS (3.13). I've been trying to set up dual monitors since I got it, but I can only get Ubuntu to see one external monitor at a time. It's like ...
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0answers
31 views

Can I setup a text only session and a GUI session at once?

I am yet on my legendary Lenovo T400 laptop which has the built in LCD display and a VGA connector which allow me to have an external monitor attached to my laptop and share different sceneries for ...
0
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0answers
34 views

How to select/activate monitor to use via terminal?

I have just installed Ubuntu Server 16.04 LTS on an all-in-one pc Acer Aspire Z1650. Installation went smoothly and succeeded. But, now I have a problem. After restarting for the first boot, the ...
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0answers
31 views

Why is the size of an image in a pdf file shown by Evince different from calculation based on DPI and resolution?

I have a pdf file which consists of only one image which fully occupies the only one page. In Evince, with 100% zoom-in scale, the size of the image (which is the same as the size of the page which ...
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0answers
16 views

How do I adjust the gamma on my HDMI monitor?

I found this question, and that works on my VGA monitor, but my main monitor is connected via HDMI, and xcalib and xgamma don't work on it. How do I reduce the gamma? This is really getting to be an ...
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0answers
84 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
46 views

Problems with screen after connecting to projector

I've been having issues after connecting my laptop to a projector, via HDMI. I have Ubuntu 14.04 on an Acer Aspire V5-591G, graphics card is Nvidia GeForce GTX 950M. When I connected my laptop to the ...
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0answers
27 views

Can't get Samsung 27" monitor to get proper resolution

I'm new to Ubuntu. I've got an older Samsung 27" monitor (60 Hz) which is capable of 1920x1080 resolution... but I can't get better than 1280x768 resolution. I've also read that there are some ...
0
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0answers
17 views

Desktop icons shifting when external monitor is plugged in

Whenever I plug in my external computer monitor for use with my Toshiba laptop, all of my desktop icons shift down. This started when I first plugged in the external monitor and since it isn't exactly ...
0
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0answers
23 views

Ubuntu 14.04 LTS Dual Screen Logs out

I have 2 displays connected to my Nvidia Titan Graphics. One is on the DVI port and other thru display port. When I open a application on the second display connected thru display port, the system ...