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

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Using Notebook as second Monitor for Ubuntu Tablet

I am planning my new mobile development working station consisting of a Notebook and a Tablet as second monitor. Notebook OS: Windows 8.1 Tablet OS: Ubuntu (14 LTS) I have asked here how I can ...
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217 views

ubuntu 14.10 - lightdm can't start unity. Bad xorg config?

When I try to login with lightdm my monitors go dark and then switch off before taking me back to the lightdm login screen. I get a message telling me: Could not switch to the monitor configuration ...
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21 views

Ubuntu 14.04 sidebar cannot be disabled

I don't know what's happening but I can't turn off the sidebar on my second screen. I've played in the settings for a bit but nothing seems to change. The second sidebar is bugging me a lot, someone ...
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57 views

how can i airplay Mirror my laptop screen and sound projector

I'm a teacher and I often have powerpoint or other resources I want to show students projected to a whiteboard. My school is phasing out serial port connection and is installing a airplay box, which ...
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1answer
41 views

Second display won't work with nvidia drivers

I have recently installed Ubuntu but the drivers from x.org are not so good, because: the display with NVidia graphics card (plugged by HDMI) has some problems server x from x.org nouveau driver ...
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1answer
96 views

Ubuntu 14.04 laptop and monitor problem

I meet with this problem second time. I'm using a laptop with dual boot. I use Ubuntu 14.04 and Win7. I have a 21,5" monitor plugged with HDMI cable to my notebook. I did this: my laptop was turned ...
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1answer
99 views

2560x1440 HDMI monitor stuck at 1920x1200 resolution

SONY laptop SVS151190X with Intel IGP: 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) Linux 3.13.0-45-generic #74-Ubuntu SMP x86_64 x86_64 ...
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46 views

ATI R9 2xx's: Dual-monitors on seperate cards

I can not seem to get my second monitor recognized/running in ubuntu 14.04.02, the light is yellow and the screen off. I have tried the basics by going into the display settings but all it shows is my ...
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23 views

Ubuntu 14.04 loses screen arrangements on reboot

Every time I boot into my Ubuntu 14.04 I re-arrange the monitors in Screen Display to match the physical arrangement of my 3 monitors: DFP-0/GPU-0, DFP-1/GPU-0, DFP-3/GPU-0 Every time I reboot, ...
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1answer
90 views

unable to switch screen in Kubuntu 14.10

I recently moved to Ubuntu from Windows and I'm using Kubuntu 14.10 now. I have a laptop with an external monitor. The problem is, I am not able to switch between the monitors with Kubuntu running. ...
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46 views

The same monitor shows up as two displays

I have a monitor plugged into my Dell Latitude running Ubuntu 14.04. I have the problem that my monitor shows up as two separate displays. But it is actually showing only one of the displays. And ...
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1answer
171 views

Ubuntu 14.04: Cannot change screen resolution

I know there are many questions with the same topic, but no solution seem to apply to my case... I'm on Ubuntu 14.04 on a Toshiba Satellite L735 laptop. My xrandr output is: Screen 0: minimum 8 x 8, ...
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33 views

Get both Graphics cards working

I have 2 nVidia GeForce GTS 450/PCIe/SSE2 graphics cards, each with a DVI, VGA and HDMI port. Unfortunately, only one of these cards is detected by Ubuntu, so I have to have one screen on VGA and the ...
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85 views

Monitor disconnected when screens go black

Since short I have a new 4K monitor connected to my AMD R9 280x on Xubuntu 14.04 via DisplayPort. I have a second monitor connected to the computer as well via HDMI. What I'm observing is that when ...
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2answers
52 views

cannot move cursor to external monitor

I just connected my external monitor and it all works fine. I tested this even in windows. But on ubuntu I cannot take the cursor to the external monitor. It just doesn't move there and it gets stuck ...
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23 views

Mouse Issues on VGA output

I am running Ubuntu 12.04 on a Lenovo Thinkpad X200. I am using the VGA output on a second monitor. The mouse works fine when using it but as soon as I touch the internal screen on my Thinkpad, the ...
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37 views

Monitors lose position in multihead setup in 14.10?

I'm experiencing an issue with Kubuntu 14.10 where after I set the monitor position and reboot, the position is again lost each time. This is being set via System Settings -> Display Configuration. ...
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96 views

External monitor works fine, but laptop shows black screen (even though it is detected)

I have quite a weird problem: a few months after successfully using Ubuntu, the laptop screen went black. After some attempts to fix it, I have discovered that when I plug in an external monitor, I ...
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11 views

ATI Eyefinity vs Nvidia SLI 3-monitor span for gaming [duplicate]

I'm going to be building a computer for iRacing/gaming, and I'd like to use Ubuntu. I'm wondering which card vendor has the best support for a 3-monitor setup that would treat the 3 monitors as one ...
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1answer
45 views

Dual Screen / Dual GFX card issue

I recently added an additional video card (Radeon HD 6450) to my system and instead of improving the response time its worse than before. On the 1 GB card the video display is very laggy, on the ...
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1answer
61 views

Use 100% of edge to go between monitors

My monitors are currently arranged like this: +---------+ | | +------+| | | || | | || | +------++---------+ If I'm at the top-left corner ...
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0answers
52 views

How to get “xdotool windowsize” to resize a window across two monitors

I have two monitors side-by-side. I can manually resize a window to span across the two monitors. However, I am not able to automate this action using "xdotool". It appears that I can resize the ...
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1answer
52 views

Split large resolution into 2 desktops

I am trying to find a solution to a limitation we have with a split DisplayPort to 2 monitors. It creates a single display across each monitor. As far as hardware goes our hands are tied since we ...
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1answer
81 views

2 pc, 2 monitor: Switching between extended screen and two separate screens

I have two computers and two monitors: My primary computer: computer1, is hooked into two monitors: monitor1: primary monitor and monitor2: secondary monitor. The second monitor, computer2 is only ...
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1answer
37 views

Laptop-connected VGA monitor is mirror only, not independently detected. 14.04

I know this is a common occurrence but I can't detangle the error. This connection has previously worked, but between then and now (12 months perhaps), I tried to get steam running and may have messed ...
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58 views

Monitor Samsung with bad resolution in Ubuntu 14.04?

I have a Dell laptop connected with the second monitor. I have the following specifications of my NVidia card: sudo lshw -C video PCI (sysfs) *-display descrição: VGA ...
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1answer
35 views

is there a hot-key to activate a second monitor?

A recent update caused problems with my multiple monitors. I have a laptop with a broken screen that i have completely removed. Ubuntu 14.04 is on the laptop and i can hear the sound where i should ...
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18 views

Disabling one video output with a keybinding

I currently run a dual monitor setup. When I only need to use one monitor, I leave the second monitor turned off. However, when I launch certain applications, they open on the second monitor since ...
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0answers
124 views

Ubuntu 12.04 Thinkpad 430 Mini Displayport Weird Effects

I'm running 12.04 on my Thinkpad 430, and I'm connecting that to a Samsung 32 inch 720p TV through a Mini Displayport to HDMI cable. I've had no trouble with this cable when connecting from Windows ...
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109 views

NVIDIA X Server Settings only show one huge screen

My current laptop features dual graphics. I am trying to set screen resolution using the NVIDIA X Server Settings application, but it only show one huge screen, which is composed of my external ...
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1answer
70 views

Permanently set the resolution for my second monitor

After every restart, I have to manually set the resolution of my second monitor with: sudo xrandr --newmode "1600x900_60.00" 118.25 1600 1696 1856 2112 900 903 908 934 -hsync +vsync sudo xrandr ...
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1answer
37 views

My Macbook has two “Built-In Displays”

I just installed 14.04 on my Macbook Pro 8,2 and I noticed that I have two "Built-In displays". Some applications open on the second display with no way to get to them. If I disable either display, I ...
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1answer
50 views

Where are the display configuration files in 14.04 LTS?

My display configuration has become corrupted. It takes longer to start Ubuntu than usual, and I notice the monitor is flickering multiple times, like when it is changing video modes. Since I first ...
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44 views

Multi-monitor on amd drivers

I have a 280x in my pc and 2 monitors connected to it and I had multi-monitory setup working on it by now it does not seem to start. In amd drivers center I keep getting this: The current ...
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23 views

Can two FirePro 2270 graphics cards run with 3 monitors to form a single desktop?

Can two FirePro 2270 graphics cards run with 3 monitors to form a single desktop? I can't seem to get it to work with the fglrx drivers. Is it only for two separate desktops then? One desktop on one ...
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1answer
107 views

3 Screen Setup - Haswell HD4400 - works on windows

I need some hints because of my 3 screen setup: I have an Lenovo X240 with ultradock, which supports displaying to 3 screens. But my external screens are recognized as one generic screen. See my ...
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162 views

Ubuntu 14.04 - Secondary display not detected after login screen

My computer is an HP zBook 14 with Ubuntu 14.04, 3.18.1 kernel, hybrid graphics display (integrated Intel HD Graphics 4400/discrete AMD FirePro M4100), and the open source drivers. lshw shows I am ...
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202 views

Kubuntu 14.10 multiple monitor issue: how to persist configuration?

I have a problem with configuring multiple monitors in Kubuntu 14.10. The system is an AMD A8-3850 (Llano). The driver manager shows this as Advanced Micro Devices, Inc. [AMD/ATI] BeaverCreek [Radeon ...
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32 views

14.04 windows go off screen on awake

I currently have a dual monitor setup running Ubuntu 14.04 LTS. My display settings are currently set to have my laptop screen on the right and my monitor on the left. Whenever I open the lid of the ...
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1answer
118 views

Multi-display Nvidia issue, desktop sliding on secondary display - Ubuntu 14.04

I've been attempting to configure my laptop with a secondary display. Here's the details: Laptop: Asus N56V OS: Ubuntu 14.04 64 bit Primary display: 1080p laptop display Secondary display: Samsung ...
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15 views

Having Issues connecting my two non-sli videocards to Unbuntu and getting the desktop to show accross them

My current system is. SSD - Samsung EVO 850 500g Processor- Intel 4770k Motherboard- asus maximus extreme vi GPUS - Nvidia 970, Nvidia 780 Ram 32gb im running this on a dual boot with windows 7 with ...
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0answers
22 views

Graphic card in slow mode?

When I plugin a second monitor, my games are running good. But without I can play those games only in a small window mode. I have a ATI Mobility Radeon HD 5650 with the open source driver and am using ...
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1answer
36 views

Ubuntu 14.04 Gnome background out of focus on external 1920x1080 monitor?

I've got an external monitor (Samsung 24 inch), and when I try and set a background on gnome, on the monitor it displays slightly blurry. As far as I am aware it's not an issue with the image itself. ...
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68 views

Xubuntu 14.04: Multi-screen configuration doesn't load at startup

I have two monitors an I created a script with arandr to configure the desktop for them. This script is located here :~/.screenlayout/dualscreen.sh and is executable. When I run it in a shell, it ...
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149 views

Thinkpad T440p Docking - dual monitor problems

I have a Thinkpad T440p in an UltraDock with Ubuntu Gnome 14.04 installed. The T440p includes the optimus graphics system (nvidia + intel). I have two monitors attached to the UltraDock. One is ...
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78 views

How to install on Ubuntu 14.04 on a Latitude E6420

I am looking to install Ubuntu 14.04 on a Latitude E6420 I currently use windows 7 and would like to get Linux running and be able to use the 3 monitor setup. Everything I see out there is for ...
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52 views

Will Unitek Y-3704 USB 3.0 Universal Docking Station work on ubuntu 12 or higher?

I consider buying Unitek Y-3704 USB 3.0 Universal Docking Station for my ASUS U36SG laptop. Seems very handy. But I wonder if my ubuntu 12.04 will be able to handle DVI and VGA displays? I have ...
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1answer
56 views

How to use multiple screens on Ubuntu 14.04

How can I get two screens show half and half of my desktop? On Ubuntu 14.04?
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2answers
508 views

Dual monitor setup, why does NVidia 346 crash and only detect one giant screen?

I'm using: Alienware M14xR2 laptop running Ubuntu 14.10 2 * DELL U2412M monitors attached via HDMI and VGA Optimus graphics (Intel + nVidia GeForce GT 650M) running with nvidea-346 and nvidia-prime, ...
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0answers
248 views

Triple monitor on Nvidia and Intel

I want to use 3 monitors, one on built-in Intel iGPU card and 2 on PCI-E Nvidia card on desktop. Is this setup possible? Searching gives Bumblebee for Optimus technology on notebooks, I tried and it ...