Questions about multiple monitors (Including projectors), how to set them up, troubleshooting the configuration, etc.

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Xubuntu 14.04 - HDMI Display no longer detected

I have a Sager NP8268, and install Xubuntu 14.04. I have been using an external Asus PB278Q monitor for 3 weeks or so via HDMI. Today, the monitor is no longer detected by xfce4-display-settings. ...
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13 views

Xserver shows just the icons on the second screen

i would like to have two different Xserver sessions, because i want to use the same machine from two differet computer by VNC. I mean we are two different person that need to work in the same server, ...
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1answer
63 views

After updating ubuntu 14.04 to ubuntu-proposed using software updater on jun 27th built-in notebook display keeps showing boot screen

after updating ubuntu 14.04 using software updater to ubuntu-proposed automatic displays configuration stopped working correctly. My built-in notebook display keeps showing ubuntu boot screen(the one ...
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23 views

How to make my secondary display not to overflow?

My primary display resolution is 1920x1080 and my secondary display is 1366x768 (both physically and in the settings). My O.S. is Ubuntu 14.04. I extend the desktop and my problem is that the content ...
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58 views

Motherboard secondary DVI no signal

I just bought a motherboard with integrated graphic (intel) 3 outputs: 1 x VGA 1 x HDMI 1 x DVI I've been able to use both VGA & HDMI but the DVI is not detected. $ lspci 00:02.0 VGA ...
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507 views

ubuntu gnome 14.04 can't turn off built-in display

I have ubuntu 14.04 gnome(3.12) on my laptop. My laptop screen is broken so I just have an external monitor plugged in and I use that. In the passed version I would just turn off the built-in (broken) ...
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1answer
728 views

Xubuntu 14.04 does not detect second monitor

I have a Dell Latitude Laptop E6440. The laptop have two interfaces, VGA and HDMI. I connect an external monitor to the VGA port, but when I ran the xfce4-display-settings I see only one monitor (the ...
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58 views

Switching back to nvidia after redock Lenovo W520

This is using a Lenovo W520 and the dual video port docking station. I am trying to undock with switching to the Intel video card and re-dock switching back to the nvidia card. 1) Boot attached to ...
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69 views

Optimus technology: Can I use intel graphic with HDMI external display

I have a Lenovo T430 with the optimus technology. I am using nvidia-prime to be able to switch between nvidia and intel cards. So, far there is no problem until I got an external monitor and I wanted ...
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1answer
69 views

Game in Wine causes second monitor to become over exposed

I have 2 monitors and when I run a game through Wine, it causes the second monitor to become over exposed and increases the sharpness quite a bit. I have played around with settings in both the game ...
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3answers
600 views

Dual Monitor not recognized in Xubuntu 14.04

I have a Dell Latitude Laptop E6440. The laptop have two in4terfaces, VGA and HDMI. I connect an external monitor to the VGA port, but when I ran the xfce4-display-settings I see only one monitor (the ...
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358 views

Problem with external monitor

Since yesterday I have weired problems using my external monitor (Benq 19" connected via DVI over DVI->HDMI cable and HDMI->Mini DisplayPort-Adapter) with Ubuntu 14.04. Until then I could use this ...
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31 views

External Montor on Samsung N150 Plus will only run on 1024 x 600 resolution

My Samsung N150 Plus runs OK on Ubuntu 14 which I have just installed as dual boot with Win 7. However when I connect my ASUS ML239H Monitor I can only get 1024 x 600 resolution. With Win 7 the ...
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55 views

Using Internal and External Radeon GPU's for Multi-Monitor

I currently have a two monitor setup that works perfectly fine for Windows. However, in past experiences with Ubuntu, I've been forced to use only my internal GPU (when both are bios enabled) in ...
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65 views

Disable laptop display before login

I am looking for a way to disable my laptop's built in display before (or right at) the login screen on Ubuntu 14.04. I have a second monitor, and want to only use that. I already have changed the ...
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27 views

Screensavers on multiple monitors

I'm looking to set a screensaver up on one monitor while leaving my other monitor available for work. I'm currently using xscreensaver and a VGA. Is there some sort of option I can ask for declare a ...
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83 views

Cant get full resolution on Second monitor with nvdia geforce 210 on 14.04

I am using two Samsung 1920x1080 monitors with my Ubuntu 14.04 machine having an nvdia geforce 210 graphic card. The first monitor is connected to the VGA port and the second monitot to the DVI port ...
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1answer
40 views

15 computers + 1 “master” computer = major headache

I'm here to ask about a research project for the Math department at a university I have been just accepted to work on. The primary obstacle of the project is as follows. The project requires a set of ...
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55 views

How to duplicate two displays of three in total in Ubuntu 14.04?

Two displays, which I want to make mirror, have the same resolution (1920x1080). One of them is TV on a wall :) It's not very comfortable to move content to TV each time, because it's behind me. I ...
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32 views

Only one external screen deteced and the other one is mirrored

I am very new to Ubuntu. I have dell laptop E5440 with Ubuntu 14.04 connected to a dock with 2 DVI-D port and one VGI port. I am trying to setup my two HP external screens to be extended but I am ...
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1answer
128 views

14.04 LTS - Nvidia 331 Dual Monitors not working any more after updating

When using the X Server Nouvea Display Drivers my dual monitors works perfectly fine. However it sometimes crashes so i decided to change the display drivers to the the latest NVIDIA 331.38 driver ...
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373 views

Asus Chromebox Displayport monitor not detected

I have installed ubuntu 14.04 as a dual boot OS on my Asus Chromebox and I'm a linux newbie. Anyway, everything seems to be working fine except for the DisplayPort monitor not working. The ...
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1answer
38 views

Unrecognized beamer on NVidia GTX 660 with 331.20 drivers

I've an NVidia GTX 660 with 331.20 drivers installed on my ubuntu 14.04 and cant get my beamer recognized. I've tested with latest drivers on Windows 7 and is also not recognized even if another ...
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1answer
164 views

'RANDR extension not present' error message when setting up dual monitors in Ubuntu

I am running 32-bit Ubuntu precise (12.04) and trying to set up dual monitors. I have 2 AMD/ATI Cayman XT [Radeon HD 6970] video cards in crossfire mode (if that makes a difference) and no proprietary ...
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174 views

Ubuntu 14.04 lts and Nvidia 9800GT

I recently aquired a new GeForce 9800GT GPU and an additional monitor for my desktop. I put it into my ubuntu x64 system, and installed the new drivers, initially from nvidia, then from the apt-get ...
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83 views

Ubuntu 14.04 second display brightness problem

Few days ago I have setupped Ubuntu 14.04. I'm using laptop and second monitor via HDMI cable. Now every about 1-2 minutes my second monitor's brightness changes (increase after that decrease and ...
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15 views

How to enable the “switch screens” button in Ubuntu 14.04? [duplicate]

Some older Ubuntu versions used to have this button that showed and overview of all screens and allowed to easily move Windows between them. How can I enable it in Ubuntu 14.04? I would like to ...
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1answer
134 views

nvidia-settings detects no display

I have ubuntu 14.04 and nvidia driver 331.38. My notebook has GeForce GT 555M and Intel Graphic card. The ubuntu works fine except one issue. I wanted to connect two external monitors and realised ...
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1answer
123 views

i can not watch youtube full screen videos on the monitor

I have just got a new monitor to connect it to the laptop. I have opened Firefox in both screens. When i make full screen mode on the monitor and want to surf the web on the laptop at the same time, ...
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67 views

Slow desktop performance on dualscreen setup with Nvidia proprietary drivers

Ok so here is my situation: I have a 2 monitor setup up that works great with my windows computer. I have a nvidia gforce 650 ti boost with both monitors attached to it. I downloaded the latest ...
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1answer
40 views

USB to DVI adapter doesn't work on ubuntu 12.04 LTS

I tried to connect a second monitor to my hp PC so I bought a USB to DVI adapter from ebay last week. The model is this one http://www.ebay.com.au/itm/USB-2-0-T...2d737f4&_uhb=1 I am using hp ...
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1answer
59 views

Ubuntu 13.10 Nvidia display issues

I've been attempting to fix an issue all day to no success. I'm facing a problem that is only allowing me to use my inbuilt graphics card. I have three monitors and an Nvidia GeForce GTX 660; I've ...
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1answer
31 views

/etc/group - group on last line not usable? Is it a bug?

$ cat -net /etc/group | tail -n 3 67 vboxusers:x:127:hannu$ 68 nvidia-persistenced:x:128:$ 69 $ $ a) With the lines as shown I get the profiling (System Settings > Color > ...
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87 views

xrandr operates don't save after reboot

I use ubuntu14.04 , with GeForce 220 installed . I don't install nvidia driver and don't want too(please don'ot tell me install nvidia driver) .Follow this link Nvidia DVI/VGA problem .I success make ...
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1answer
715 views

Ubuntu 14.04 two Nvidia cards triple screen Xinerama with proprietary driver, third screen black and X cursor [closed]

I am having some issues getting my third screen working properly. I had triple screens working fine on 12.04, using 2 nvidia cards. Did a fresh install of 14.04 and having no end of problems getting ...
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280 views

Second Monitor doesn't work properly (Ubuntu 14.04, Dell XPS13 Dev. Edition (Intel HD4000))

I fail at configuring a second monitor using Mini-Display-Port > HDMI cable > ASUS MX279 on Ubuntu 14.04, Dell XPS 13 Dev. Edition (latest Intel HD4000 drivers installed). Out of the box it worked ...
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39 views

Permanently disable internal LCD panel Lenovo R61

I build a pseudo-desktop from a Lenovo thinkpad R61 with an htpc/media server in mind. I took apart the laptop, physically detached the busted panel, built a nice wooden case for it and a 21" VGA lcd ...
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1answer
254 views

Is it possible to remove nouveau driver from a dual graphics system? Kubuntu 14.04

I've tried numerous times to get my nvidia card running on Ubuntu with no success so far, but that's ok, I don't actually need the power nor the advanced graphics that the card provides so I'll make ...
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81 views

Screen resolution after reboot is incorrect

I've reviewed lots of questions related to this issue and I'm actually stuck. Here's what I have: 2 monitors set in mirror mode. Problem I had was that one of them was not having the 1600x900 ...
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1answer
90 views

external monitor can't display max resolution

I had been using an external monitor, an old Dell Inc. 19" with Ubuntu 14.04 for a while now, The resolution it displayed at was something like 1366x768 or 1366x1024, I can't remember exactly which ...
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106 views

How to set wallpaper for both monitors on Xubuntu when using arandr

I used arandr (a GUI for xrandr) to set up two monitors side by side in my xfce/xubuntu DE. However, the wallpaper that set using the xfce settings manager applies only to one monitor, while the other ...
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505 views

HDMI video output not working for external monitor

I have installed from scratch ubuntu GNOME 14.04 with gnome-flashback on my old HP HDX 16 laptop (core 2 duo p8600 + nvidia GT9600M + 4GB of ram) and I have problems with the HDMI output (I use it to ...
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57 views

Gnome-shell + clone monitors

First of all, sorry for my English. I've Ubuntu (14.04) with gnome-shell (3.10) installed and I would like to get both monitors in mirror mode on startup. Currently, I have to go to System Settings ...
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51 views

Why does Unity not extend to my 2nd monitor, even when it is displaying an X-Screen?

I recently added a 2nd video card to my system, but unity refuses to extend my desktop over to the second screen. Although the secondary monitor initialises when I boot and I can move the mouse cursor ...
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40 views

How to set up dual graphics cards on 12.04

I have a dell C1100 Server and a Nvidia Graphics card. I have searched google and have only found how to set up dual monitors. I would like to be able to use both the integrated vga card and the ...
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1answer
146 views

Dual monitor - Desktop falls off the screen slightly

I have a dual monitor setup where I have placed a 1280x1024 resolution monitor to the left and a 1920x1080 resolution monitor to the right. Internally it looks like Ubuntu (14.04) changes the total ...
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1answer
114 views

Gnome taskbar on multiple monitors

Using Ubuntu 12.10 with GNOME 3.6 I have plugged in a second monitor to my laptop and can drag windows between. I am using Compiz to handle virtual desktops and have switched that to scroll desktops ...
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187 views

Dual monitor setup only one monitor detected

I have a dual monitor setup connected through dvi-d and vga. Until yesterday everything went fine, but now both screens turn on at kernel boot, while the vga screen turns off at ubuntu 14.04 boot. At ...
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67 views

Usb/vga not recognized anymore

I don't know what happened, but yesterday everything worked fine, but when I woke up this morning and booted my computer to Ubuntu 14.04 a bunch of hardware isn't recognized anymore. I use a dual ...
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38 views

2 Monitor 2 GPUs one problem

I have 2 monitors one running off my PCI E card which is a 7870 and another running off my IGP which is a 760G Express or whatever from AMD. The second monitor only shows up in 1024x768 and the ...