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

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10
votes
4answers
22k 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 ...
6
votes
3answers
17k views

frequency out of range - please change display mode

I just downloaded the latest version of the Ubuntu live CD, and have installed it on a desktop computer (a Fujitsu Scaleo P). Once installed it seems to work perfectly, although there are some updates ...
17
votes
4answers
24k 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 ...
18
votes
3answers
63k 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 ...
18
votes
4answers
11k 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 ...
3
votes
3answers
1k views

Ubuntu 14.04 - Add Fake Display when No Monitor is Plugged In

I have an Ubuntu 14.04 server that has no external monitor connected. I use NoMachine to remote control the machine. When I do so, the Unity/Gnome interface doesn't see any monitors connected, so I ...
9
votes
5answers
8k 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, ...
19
votes
6answers
7k 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 ...
11
votes
1answer
2k 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 ...
1
vote
2answers
2k views

Adapt Ubuntu to a high-DPI resolution screen

What are the steps you need to adapt Ubuntu on a fresh installed Laptop with a high resolution display? I have a display with 3200x1600px on only 11'' which is all realy tiny.
0
votes
1answer
2k views

How to try Ubuntu on a hp pavilion g7-1246ef computer that has no Linux suport for video card?

I want to try Ubuntu on a hp pavilion g7-1246ef computer. I got it as a 64 bit system with a win7 64 bit but now it runs a 32 bit win 7 (due to canon printer driver issue). The Windows device manager ...
3
votes
4answers
5k views

Error message “Signal out of range 92KHz - 58Hz ” when starting Ubuntu. What is wrong and how can I fix it?

My monitor has an Analogical connection. First I install windows 7, then I install Ubuntu 11.10, when this installation finish I restarted the PC. Any time there I turn on the PC I see the BIOS ...
6
votes
2answers
10k views

Unknown monitor, intel driver, want to set VGA resolution to widescreen TV

I have a Sony Bravia LCD television, which is now plugged into my laptop using a VGA cable. I am running an HP Compaq laptop, with a video driver of: 00:02.0 VGA compatible controller: Intel ...
8
votes
2answers
5k 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 ...
4
votes
8answers
26k 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 ...
14
votes
3answers
3k 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 ...
11
votes
4answers
12k 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 ...
9
votes
3answers
4k 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
4answers
24k 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 ...
4
votes
1answer
2k views

Ubuntu Detects 2 monitors when I only have one

Ubuntu Detects 2 monitors when I only have 1. This causes an issue when booting up because it's detecting 2 monitors and by default it is mirroring the display; which is causing a distorted picture ...
1
vote
2answers
1k views

Booting to no display

Everything was working fine this morning. In the afternoon, I tried to boot into Ubuntu Lucid Lynx once again and I see no display. I hear the sound prompts of the login screen, so I press enter and ...
9
votes
6answers
3k 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 ...
3
votes
1answer
3k views

Best triple head display setup

I'm currently running Ubuntu 12.04 with a darn good triple head display setup. I've got a VisionTek 900530 Radeon HD 5450 512MB DDR3 PCI Express video card that has two DVI outputs and one Mini ...
2
votes
2answers
4k views

Unknown display besides laptop Built-in display. Old question but with no answers

After my update from 12.04 to 13.10 my display configuration started showing an extra unknown monitor, even though I have nothing connected. lscpi: 00:02.0 VGA compatible controller: Intel ...
3
votes
0answers
317 views

Nonexistent display (Unknown Display) messing things up

I've been cracking my head with this one all day, read all there is to be read around the issue (not much to be found on it to be honest: some questions, some blog posts and some unresolved tickets) ...
3
votes
2answers
874 views

Is there any way to set the display scaling back to default other than from the display settings dialog?

I scaled the UI from the display menu. Now it is way too big and I can't get to the slider to reset it. Any ideas how I can change the scaling in Unity back to default without accessing the settings ...
3
votes
3answers
6k views

Settings for multiple monitors are not stored

I am running Ubuntu 12.04. on a Lenovo Thinkpad T400. I connected an external monitor as a second display. The laptop stands under the external screen. The laptop has a native resolution of 1440x900 ...
1
vote
1answer
3k views

Ubuntu 12.10. Can't add custom resolution

System: Ubuntu 12.10, nVidia Geforce GT240 (nvidia-current privative driver), LG display connected to VGA-0 The 1920x1080 resolution is not listed, I've added it in Windows but I'm having problems ...
0
votes
1answer
2k views

Display issue on Toshiba Satellite P75-A7200

I am fairly new to Linux and Ubuntu and I am sure this is a simple issue. The screen is really dark on the boot up and it looks like it is off. I've found out that if I plug a monitor and boot, I can ...
16
votes
3answers
8k 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 ...
4
votes
2answers
4k views

External Monitor Resolution doesn't go above 1024x768

I am trying to use a 24" external monitor as the primary monitor for my Asus EEE netbook. When I connect it, it works properly, except the max resolution available is 1024x768. Usually, I'd go into ...
10
votes
2answers
7k 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 ...
8
votes
1answer
8k 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 ...
7
votes
2answers
2k views

How to set up multiple GPUs (12.04)?

I have two GPUs: one Intel i915 integrated, and one NVIDIA 560 Ti. This is NOT a hybrid setup, nor a laptop. In Windows 7, each card is connected to a different monitor, with the NVIDIA doing any ...
5
votes
2answers
14k views

How to make Ubuntu recognize an unknown external display (so I can adjust its resolution)?

I have a Dell laptop with an external monitor attached (a Samsumg SyncMaster 931c). My laptop display was recognized, and I can adjust its optimum resolution. My external display is still unknown, ...
5
votes
2answers
10k views

Cannot set monitor to native resolution

problem is similar to so many other users, but solutions found do not work. Background: Fresh install of 12.04 (completely updated) on a Fit-PC2 (specs). Read in several places that the new 3.X kernel ...
2
votes
3answers
1k views

Setting a display's backlight brightness to be lower than is possible via the normal brightness controls

By normal brightness controls I mean the accelerators on my laptop's keyboard that seem to integrate with Unity. In a dark room, my screen is quite bright, even on the lowest setting. Can I override ...
2
votes
2answers
3k views

Using a displaylink usb video adapter

I just bought this USB graphics adapter and I need to use it on Ubuntu 10.10. I followed this guide, but when I ran $ ./configure && sudo make install && make check nothing ...
1
vote
1answer
1k views

How do I adjust display size, not resolution?

I have my Ubuntu 11.10 PC plugged into a TV using an HDMI input. The edges of the screen get cut off, and I can't adjust the television's settings for HDMI. I can adujust the "position and size" on ...
0
votes
0answers
325 views

connect Crossover High Res. Monitor to Intel HD Graphics 4400

I tried to attach my external Crossover monitor to my Lenovo Yoga 2 Pro with help from this page on notebookcheck.com. My monitor seems to be able to display only 2560x1440 at 60.0, xrandr shows ...
6
votes
1answer
4k views

Why do my display settings say laptop when I'm using a desktop? [closed]

I just upgraded from 11.10 to 12.04 today. I noticed that in display settings it recognizes my system as laptop and I am actually running a desktop with a viewsonic monitor. How can I fix this?
2
votes
2answers
281 views

NVIDIA vs. 12.04 Unity > Recovery

I had successfully installed NVIDIA-Linux-x86_64-302.07.run from the nVidia website. That got me nothing but an unalterable 640x480 screen. purge and autoremove didn't seem to undo it. I attempted, ...
2
votes
1answer
731 views

Installing nvidia driver?

I have ubuntu 12.04 running on my laptop. I've been trying to install a 2nd monitor on it, but ubuntu does not detect the second monitor. I have an nvidia card on my laptop, and ubuntu was using the ...
2
votes
0answers
476 views

How to get display settings persistent? [closed]

I have the following set-up: laptop with screen: 1366x768 external LCD monitor with: 1024x768 The monitor is permanently connected and recognised by the system. Screen is expanded to the ...
2
votes
2answers
8k views

My 1440x900 resolution is not recognized

Today I decided to install Ubuntu 11.10, and it did not recognize my resolution - 1440x900. This has already happened in other versions of Ubuntu. However, in 11.10 I cannot get this resolved. Can ...
1
vote
1answer
2k views

Fn+F2 LCD/CRT display toggle stopped working in 11.04

After an upgrade from 10.10 to 11.04 Fn+F2 LCD/CRT display toggle button stopped working on my MSI U230 Light. Instead, pressing Fn+F2 opens Dash. Is there any other way to toggle between LCD/CRT or ...
1
vote
2answers
525 views

Where can I find wayland?

Mark Shuttleworth writes that wayland will be replacing X in the future in Ubuntu. Where can this software be found?
0
votes
4answers
16k views

Ubuntu 12.10 won't display properly after kernel upgrade [closed]

After updating my system today, Ubuntu's doesn't display correctly. The desktop was working properly before, but now it looks like this: I had to use the terminal to run Synaptic package manager, ...
14
votes
4answers
4k 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 ...
4
votes
2answers
797 views

When Cinnamon is installed, Unity desktop “smears” (doesn't refresh) and shows no wallpaper

Since a couple of days now, my unity desktop background smears everything, just like what old Windows versions were famous for: Of course, I tried rebooting a couple of times. Also, I switched ...