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

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34
votes
3answers
44k views

Flux for ubuntu 14.04 - possible?

Is it possible to make Flux work in ubuntu 14.04? If so, maybe you can share your knowledge or point me to a guide? (Flux is software which adjusts temperature of your display according to time of the ...
32
votes
2answers
17k views

Is it possible to have two different DPI configurations for two different screens?

I'm using Ubuntu 12.04.3 with NVidia drivers (319) for my Quadro K2100M graphic card, and when I switch my main 3200x1800 laptop screen to mode 1920x1080 (using nvidia-settings), the display goes ...
30
votes
2answers
112k views

How to add display resolution fo an LCD in Ubuntu 12.04? xrandr problem

I am fresh for Ubuntu and Linux in general. I have installed Ubuntu 12.04 and stuck trying to setup correct resolution for my LCD display. The native resolution for the LCD is 1920x1080 here is the ...
24
votes
6answers
30k views

What is the function of the “Sticky edges” on/off setting in displays?

I have installed Ubuntu 12.04 (Precise Pangolin). If I open System Settings >> Displays there is a new (?) on/off button for a setting named Sticky edges. Can someone tell me what this setting ...
24
votes
9answers
42k views

Change Primary monitor

How do I change my primary monitor without using the command line?
24
votes
5answers
15k views

Is there a software utility to adjust screen gamma/brightness/contrast?

I use to work at night and it is eye-hurting to watch at lightbulb-bright screens (I've got two - laptop's built-in panel and an external 18-inch CRT) in a dark environment. So I adjust my screens to ...
22
votes
5answers
40k views

Ubuntu 12.10 “Turn screen off when inactive for: Never” still turns off

After a fresh install of Ubuntu 12.10, my screen still goes off after about ten minutes. I've been to the Brightness and Lock control panel. The Turn screen off when inactive for: setting is set to ...
20
votes
6answers
8k views

Is there a way to autodetect when a display is disconnected?

I am running Ubuntu on a Dell Latitude with the latest Nvidia drivers. Basically what I want is when I disconnect my external display that everything goes back to the main one without having to change ...
19
votes
3answers
35k views

Ubuntu Hyper-V Guest Display Resolution

Good afternoon, I am trying to set up an Ubuntu guest on a Hyper-V server. I am relatively new to Linux so please bear with me, the VM is a test machine to get the hang of things and give Ubuntu a ...
19
votes
4answers
18k views

Turn off monitor using command line

I am runnning Ubuntu Server on my laptop. There is really no reason for the screen to be on. I have been trying to use this command to turn the screen off: sleep 1 && xset dpms force off ...
18
votes
4answers
6k views

How to turn off the display via the command line?

Is there a way to turn off the display (enter power saving mode) using a command? For example, when the computer is inactive for a specific interval, the screen turns off to conserve energy. Is there ...
18
votes
6answers
14k views

How to run two X sessions at the same time?

I would like to run two X server instances at the same time. One would be an interactive session using the mouse and keyboard attached to the computer. The other would be a 'virtual' session that I ...
17
votes
2answers
36k views

How can I rotate my display in the most easy way?

I am the lucky owner of a pivot monitor, which screen can be rotated (physically). What is the easiest way to make my display turn when I turn my monitor? For the moment I first launch the 'Displays' ...
16
votes
4answers
21k views

How do you change brightness, color and sharpness from command line?

I am controlling my PC with SSH and scripting. How can i change the brightness, color and sharpness from command line? Try 1: failed $ sudo redshift -t 5000:5000 -g .5 Cannot list GNOME panel ...
15
votes
4answers
6k views

Why does my Thinkpad brightness control skip steps?

The problem: there are 16 brightness levels on my laptop, but pressing hotkeys Fn+Home, Fn+End adjusts brightness 3 steps at a time (e.g. from 0 to 3, or from 15 to 12). I find it important to notice ...
15
votes
3answers
28k views

How do I list connected displays using the command line?

Is there a command that will list displays connected to the computer? Specifically, I'm looking to find out how my external monitor is being detected by the system when connected by HDMI cable and ...
14
votes
3answers
4k views

How do I set the native resolution on an HP Mini 210-1004sa?

FYI: My Netbook model is HP Mini 210-1004sa, which comes with Intel Graphics Media Accelerator 3150, and has a display 10.1" Active Matrix Colour TFT 1024 x 600. I recently removed Windows 7 Starter ...
13
votes
4answers
913 views

How to install Ubuntu on an old laptop missing its built-in display

I have an old HP laptop that is missing its built-in display. I use it plugged in to my TV via VGA. It runs Windows Vista fine, but it has recently started to slow down, and I decided it needed a dose ...
13
votes
2answers
781 views

Use one monitor as multiple monitors

It is nice to use multiple monitors for developers. You can maximise each window in a specific monitor, windows can stick to corners of specific monitors. There are ultrawide monitors in the market ...
13
votes
2answers
30k views

Using Intel Wireless Display (WiDi) in Ubuntu

My Thinkpad X1 Carbon apparently supports Intel WiDi. I believe this should, in theory, allow me to share my screen with my Sony Bravia TV which supports Miracast. Is it possible to make use of ...
13
votes
2answers
5k views

How would Ubuntu work on an Apple retina display?

Apple has announced a laptop with "retina display" = 2880x1800 pixels resolution on 15 inches. If one were to load Ubuntu on such a machine, it would probably be unreadably micro-texted as long as ...
12
votes
5answers
17k views

Ubuntu resolution with Ultrabook

I installed 12.10 to Asus Zenbook Prime UX31A. Now I face a resolution problem. The default resolution is 1920x1080. But everything is too small with this resolution. Icons, Unity, file system, ...
12
votes
5answers
36k views

Adjusting display geometry in a virtual machine?

Running 11.04 beta in a Parallels 5.0 virtual machine, but this question will apply to any virtualization software. Parallels 5 Linux tools (guest additions) don't work for 10.10 and 11.04 and I ...
12
votes
1answer
19k views

list existing X display names?

How do I get a list of current X display names? Apart from being a useful thing to know, I want this so that (hopefully!) I can use xcalib -invert -alter as suggested in this question to invert the ...
12
votes
2answers
23k views

What is the use of nvidia-prime?

Yesterday, I was very excited about initial support for optimus using nvidia-prime package on Ubuntu 13.10. It seemed to be the way to replace my bumblebee + hybrid-screenclone configuration, since ...
11
votes
2answers
3k views

Does redshift need an active internet connection to work?

It seems redshift doesn't run without an active internet connection. If so, is there some way it could be run when there's no connection to the Internet?
11
votes
2answers
4k views

Disable screensaver while watching flash videos

I generally watch lot of lengthy videos on YouTube. I always experience a problem because the screensaver is activated every 5 minutes. I would like to know how to disable the screensaver while ...
11
votes
3answers
26k views

How to enable monitor from terminal?

I accidentally disabled my monitors, so when I log in I land on a blank, back-lit screen. I can open terminals with Ctrl+Alt+F#, so how do I enable the monitor from terminal? I tried xrandr, but it ...
11
votes
2answers
1k views

How should I handle multiple monitors when I regularly connect and disconnect different monitors and projectors

I'm moving from a macbook pro (with MacOSX) to a lenovo T430 running ubuntu 12.10. I use the laptop for work, and work from home regularly. I have an external 30" monitor at home, an external 23" ...
10
votes
2answers
10k views

How to enable sub pixel hinting?

Fonts are displayed a little bit blurry on my TFT screen. I fixed this in previous Ubuntu releases by enabling sub pixel hinting in the font settings. But now I can't find any font settings dialog in ...
10
votes
6answers
4k views

How can I disable backlight when I lock the screen?

When I lock screen, the display does turn black but the display isn't completely off. There is some light coming out of the display in screen lock mode but it get turned off when inactive for 10 ...
10
votes
10answers
78k views

How do I fix overscan on my HDMI HDTV?

I've connected a HDTV with HDMI on my Radeon 4670, using the open source ati driver. However there is "overscan" which cuts off a bit of each edge of the screen, about the size of the gnome-panel. How ...
10
votes
2answers
15k views

How to disable laptop's LCD and use external monitor as only output?

My laptop's LCD broke and I removed it. Now I permanently added a monitor via HDMI. How can I set up Ubuntu 12.10 to only use and show the external monitor and disable the LCD? Right now, I cannot ...
10
votes
7answers
3k views

Ubuntu Desktop shifted to right

I am using Ubuntu 12.04 (precise) Kernel : 3.5.0-18-generic I am encountering a strange problem, my whole desktop has shifted to right. This happened after I restored my system, I was getting a blank ...
9
votes
6answers
2k views

Will Wayland have network transparency?

The Xorg server/client architecture allows for network transparency which means it is possible to start x-clients on a remote machine and display the GUI on the local machine (i.e. via x-forwarding by ...
9
votes
4answers
27k views

How do I use a DisplayLink monitor?

I'm trying to connect an external monitor to my laptop via a DisplayLink USB adapter. When I plug in the USB cable, the screen turns bright green. This apparently indicates that the udflib displaylink ...
9
votes
2answers
19k views

adjust resolution on Ubuntu Server 10.04?

Installed Ubuntu Server 10.04 on an old laptop and I noticed that the system is trying to show the CLI below my screen. This means that if I run a script or a program with a bunch of output, once it ...
9
votes
2answers
19k views

Switching to Ctrl+Alt+F1 and back to desktop (Ctrl+Alt+F7) : Blank Screen and garbled display

Go to tty1 with Ctrl+Alt+F1. Go back to desktop with Ctrl+Alt+F7 Screens stays blank. Cursor changes from an arrow to a hand. When I then close and re-open the lid the screen comes back up but is ...
9
votes
3answers
5k views

How to get Lilliput USB monitor working?

Okay, I just got a Lilliput 7" USB Monitor: Unfortunately, I am having some trouble getting it to work in Ubuntu. It is a DisplayLink device, so it should work in Ubuntu. Here is the output of ...
9
votes
2answers
1k views

Want to disable built-in screen by default

Some background: My old, well-loved laptop has kicked the bucket. The normally well-backlit screen is entirely, illegibly darkened. It seems to my inexpert inspection to be a hardware problem well ...
9
votes
2answers
7k views

Using a DisplayLink USB video adapter on Ubuntu 12.10

The line of USB video adapters made by DisplayLink has a somewhat sordid history under Linux. In past Ubuntu releases, the process of getting them to work has been somewhat difficult, inspiring a ...
9
votes
2answers
3k views

How can I solve display glitches and poor performance with ATI fglrx driver on my ThinkPad X100e?

I noticed that video performance on my Thinkpad X100e was very poor compared to Windows 7, so I installed the ATI fglrx proprietary drivers by using the "Additional Drivers" dialogue box. The system ...
9
votes
1answer
190 views

About the 'who' command & it's Output on '14.04 TrustyTahr'

I have a question that arose in my mind after upgrading to 14.04 TrustyTahr from 12.04 PrecisePangolin. The question pertains to the 'who' command, and its output. On previous editions of Ubuntu the ...
8
votes
3answers
6k views

Workspace 1 to laptop screen and Workspace 2 on HDMI connected TV?

I have two workspaces, which I need to function as below: Usually they function as usual two workspaces, but... When I connect a HDMI cable to my system I want to have workspace 1 display on laptop ...
8
votes
2answers
39k views

Cannot connect to X Server when running app with sudo

When I am running some software using sudo command it showing error like cannot connect to X server For example if I run the following command: $ sudo gedit /etc/profile I am getting ...
8
votes
1answer
310 views

could you possibly install a malicious program using apt-get? [duplicate]

While installing various programs, I get asked to download some packages that are required for it to work. Some of them are well known applications, where the read-me document is trustworthy whereas ...
8
votes
2answers
6k views

Triple-head on a Lenovo T520

Lenovo T520 with integrated Intel HD graphics + a NVidia card (Optimus) Ubuntu 11.10 on the computer. I would like to use the built-in screen plus two external screens. This PDF indicates that it is ...
8
votes
2answers
8k views

Can't save nvidia settings for screens after reboot

I have two screens and sometimes I just want the 27" to display. So far I have tried to run the nvidia-settings as sudo -s nvidia-settings But every time I reboot I have to redo my preferences.. ...
8
votes
3answers
6k views

How do I rotate my display when not using an X Server?

I have a widescreen monitor that rotates. I'm trying to use it in 'landscape' mode (vertical). This is easy in the GUI. How do I rotate my display when I am not running an X Server or when I am ...
8
votes
6answers
17k views

Why does my display keep turning off every 10 minutes?

I have installed Ubuntu 11.10 (Oneiric) in VirtualBox as well as virtualbox-guest-additions . The display resolution adapts to the size of the window as expected, but the display turns off after 10 ...