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

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23
votes
12answers
28k views

is there any ability to set primary monitor

I want my primary display be at the right and my TV (additional) be at the left. In that case new windows shall appear at the TV. Can I somehow set where new windows will appear ?
2
votes
3answers
2k views

How do I set an external monitor as default? (Or move Unity bar to monitor at least)

I'm using Ubuntu 11.04 Natty on an HP laptop and I cannot figure out how to get Unity on the external monitor! I have my desk set up with my monitor in front of me, and my laptop working as a ...
0
votes
1answer
32 views

Kubuntu 16.04 Lost Dual Monitor Capability

new to Kubuntu and relatively new to Linux overall. I installed Kubuntu 16.04 on Desktop with add-on Radeon HD 5850 GPU. I'd previously used this exact hardware to run dual monitor. I plug a DVI (my ...
0
votes
0answers
20 views

Triple monitor setup with Intel onboard graphics and AMD discrete graphics card?

I was hoping to move my desktop machine to Xubuntu, but can't figure out how to get Ubuntu to let both my Intel HD onboard graphics driver and AMD driver operate simultaneously. The machine runs ...
1
vote
0answers
47 views

Dual monitor started to flicker after upgrade to 16.04

I am running dual monitor setup (in mirror mode) on ubuntu. Right after upgrade to 16.04, I am experiencing issues with flickering (image on/off) on second screen (which is LGD LED TV), specifically ...
4
votes
2answers
198 views

Controlling a remote Linux machine with dual monitors

I have a remote Linux VM that runs Ubuntu 12.04. I currently use NX to connect to the remote machine and work on it in a GUI environment. On my host computer, I have 2 monitors of different sizes (22" ...
3
votes
2answers
10k views

Ubuntu 14.04 doesn't detect second monitor

I have a problem with Ubuntu 14.04. Suddenly, my second monitor isn't detected on Ubuntu. It worked fine before. When i try using Windows 7, it is detected. I'm using HP Pavilion G4 1212tx AMD ATI ...
0
votes
0answers
32 views

Multiple monitors configuration problems

I've decided to finally change my last computer to Linux and it is the only system I have with multiple monitors so I have not had these problems before. I have one monitor and a TV connected to the ...
10
votes
2answers
2k views

`xcalib -i -a` controls only one of two screens - can it control both?

I am using 2 screens, and wish to invert the colors on both of them without using compiz (I'm using gnome shell). I can use xcalib -invert -alter as suggested in this question, but it only inverts ...
0
votes
0answers
21 views

Strange colours on startup in Ubuntu 16.04

after upgrading to Ubuntu 16.04 I face the issue, that one of my monoitors is having strange green bars and is flickering during and after upstart. I have a 3 monitor Setup (Lenovo T450S and 2 ...
0
votes
0answers
69 views

Add Secondary Monitor (Nvidia 367.27, 16.04, DisplayPort)

The Nvidia driver fails (I've tried 367, 364, 361) when I attach a monitor to the mini displayport. As soon as I do that, the UI changes... I think Unity fails to load given all the fonts change, ...
0
votes
0answers
13 views

How can I setup 3 monitors so that 2 & 3 are mirrored?

I have an nVidia GeForce GT 730 & am using the nVidia proprietary driver (361.42) on Ubuntu 16.04. I have 2 monitors & a projector. The first monitor maxes out at 1280x1024. The second monitor ...
0
votes
0answers
14 views

Kubuntu KDE crash on unplugged monitor

I got a medion laptop computer running on Kubuntu 16.04. I was working on an essay, so I plugged my TV in as secondary screen. Now I wanted to simply take the laptop to my bed to watch a movie and as ...
0
votes
0answers
33 views

Ubuntu 14.04 & NVIDIA Dual Monitor Issue

I am having bad time with Ubuntu 14.04 dual monitor screen resolution issues, the second monitor is a real badass that in any mean it can't be configured. I have NVIDIA card and its latest driver ...
4
votes
2answers
118 views

How to put unity launcher on in different positions on different monitors

I have two monitors: One is a large 2560x1600 monitor, which I use as my main monitor and do most work on, and the other is a 1360x768 monitor set up vertically for use as an 'off' monitor - for ...
0
votes
1answer
33 views

How do I change the LightDM unity-greeter wallpaper behavior?

Ubuntu 16.04 x86_64 This is not how to change the login screen wallpaper, or how to stop dynamic wallpaper switching. This is how to set the default behavior from "Scale" (or whatever the current ...
3
votes
1answer
11k views

How to get Nvidia Graphic card to work on Thinkpad T430?

I installed Ubuntu Linux on my Thinkpad T430 and everything works until last week. Because then I bought a new monitor with a higher screen resolution than full hd. So I cannot run the monitor with a ...
1
vote
1answer
84 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) ...
5
votes
3answers
4k views

After upgrading from13.10 to 14.04 screen on a laptop doesn't work but

First my laptop CPU/GPU is Intel Celeron N2815 (Bay Trail) and I am in dual boot with windows 8. I have upgraded from ubuntu 13.10 to 14.04 today through update manager. And after upgrading and after ...
2
votes
2answers
3k views

Xfreerdp Upgrade to version 1.1 to support Multi Monitor

I was trying to use freerdp with support for multiple monitor using ubuntu 13.10 x64 and I get error : root@rdp-client:~# xfreerdp /multimon /f /u:a /p:1 /v:192.168.0.140:3389 transport_connect: ...
0
votes
0answers
79 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
vote
1answer
35 views

Two monitors, two refresh rates

I'm running Ubuntu 16.04 and I am using the proprietary NVidia driver (version 367.27). I have two graphics cards (a pair of EVGA Titan X) and two 4K displays (both are Dell P2715Q). The displays are ...
2
votes
1answer
81 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 ...
1
vote
1answer
551 views

Display unknown after nvidia driver update, resolution stuck at 800x600

I am currently running Ubuntu Gnome 15.04 I just installed the proprietary nvidia driver version 346 to resolve issues with another application and restarted my desktop to find that my main monitor is ...
0
votes
0answers
7 views

Kvm Switch not signal monitor

I've got this KVM switch, to connect two computers with one mouse, keyboard and monitor. I am using Xubuntu and the problem I have apart from the normal resolution problems that everyone is having (...
0
votes
1answer
10 views

Cannot span a window across monitors when changed to portrait orientation

My previous setup was with 3 monitors in landscape 1280x1024. With that I was able to full screen a window over the 3 monitors and to move windows freely between screens. I've changed my screens to ...
3
votes
1answer
350 views

How can I preserve the desktop's icon positions after reboot, on a dual monitor setup (Unity)?

I have a dual monitor setup running Unity on Ubuntu 14.04 Whenever I boot the machine, the system appears to forget the positions of my desktop icons on the right-side display (Connected via VGA). ...
2
votes
1answer
46 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, ...
1
vote
1answer
80 views

Stop monitor from going to sleep in ubuntu 16.04

I want to stop monitor from going to sleep in ubuntu 16.04. I am using /etc/X11/xorg.conf file in Ubutnu 14.04, which has below lines written in it. Section "ServerFlags" Option "BlankTime" "60" ...
0
votes
0answers
23 views

intermittent display flipping with Thunderbolt 3 dual monitors [on hold]

I am running 16.04 on a dell xps 13. The issue occurs when I connect 2 AOC monitors to my startech Thunderbolt 3 to Dual HDMI Adapter. The displays alternate turning on and off for about 5 seconds ad ...
1
vote
0answers
72 views

Cannot login after suspend with multiple monitors

Since I attached an external monitor to my laptop I'm no longer able to login when resuming from suspend. LightDM appears on both screens and shows my name in the login box, but the password field is ...
1
vote
0answers
25 views

AMD, second monitor not displaying properly

I've recently run into a problem with my second monitor on Ubuntu 14.04. Only a slither of it actually displays anything, it's not a faulty monitor as I've switched the DVI cables and the problem ...
1
vote
1answer
49 views

Display problem on second monitor

The desktop and every window is like 1" off the screen on every side of it, windows controls, menus, desktop panels are all outside the screen. I tried xrandr but i was only able to make it worse. ...
1
vote
0answers
11 views

Windows always opened between the two monitors

I have KDE 5 and a second monitor. Every time I open an application, the window appears exactly between the two screens. How can I avoid this, and for example, either: Tell KDE to open the ...
0
votes
0answers
40 views

Multi Screen setup using SLI

I saw this question but the answer doesn't seem to be correct. I'm using 1 GPU per monitor and tried as the answer instructed but if I do that my primary screen becomes unreachable. So, I changed the ...
0
votes
1answer
23 views

Can't add the same item on multiple xfce panels

I'd like to know if there is a way to force adding an item on multiple panels on xfce. I'm talking about dockbarx and notifications that can be used only on one panel. I'm on a multiple monitor ...
2
votes
1answer
4k views

Dual Screen will only mirror after 12.04 upgrade

I have been using Ubuntu with a dual screen for years now, after upgrading to 12.04 LTS i cannot get my dual screen working properly Graphics: 01:00.0 VGA compatible controller: Advanced Micro ...
9
votes
4answers
739 views

Desktop icons off screen

I have a three monitor setup, where the left monitor is positioned lower than the other two. I want to setup the monitor layout accordingly, but when I do that, some of the desktop icons are not ...
0
votes
0answers
17 views

S-Video stopped working after installation of Ubuntu 16.04

My problem is produced right after the installation of the latest updates. I can see no Xorg.conf file in /etc/X11. using xrandr returns Screen 0: minimum 8 x 8, current 1280 x 800, maximum 32767 x ...
1
vote
0answers
21 views

Crash/hang when external monitor is connected during login

When I log into my Dell M3800 with the external display connected (via DP), Ubuntu freezes: Shows only the background image, mouse pointer still works, but no keys etc. If I log in with the 2nd ...
1
vote
0answers
12 views

16.04 LTS. zBook with Dreamcolor and nVidia. Disabled screen turns on after screen lock

I have an HP zBook with a Dream Color display and nVidia graphics. I use an external zDisplay. I go into the nVidia X server settings and turn off my built in laptop display in order to only use the ...
1
vote
1answer
42 views

Is DisplayPort 1.2 properly supported in 16.04?

About a year ago I tried bringing up (at the time) 15.04 on an i7 NUC (last year's version of http://www.intel.com/content/www/us/en/nuc/nuc-kit-nuc5i7ryh.html) with three daisy-chained Dell 2410 ...
1
vote
0answers
49 views

Alternatives to xrandr for HiDPI double screens

I have a Dell Precision 5510 with a 3840x2160 screen, connected to a monitor with a 1920x1200px resolution. In order to use them together I followed what is suggested here. In other words, executing: ...
2
votes
2answers
5k views

Is this a dual monitor reset bug?

My two displays are: Intel GMA x4500 Laptop (1280x800 native resolution of the built-in display) External display (1920x1080) A few minutes after I login to my dual monitor setup, it gets reset to ...
3
votes
0answers
32 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-...
1
vote
0answers
49 views

How DisplayLink will be treated in Ubuntu 16.04 (fb ov display device?)

I'm trying to hookup 3 external monitors (3 * 1920* 1080) to my Dell XPS 15 (9550). I thought that it will go with Matrox TrippleHead2Go DP edition by means of Thunderbolt port. No way - Matrox is ...
3
votes
2answers
7k views

Turn off laptop display and have monitor

My laptop display has stopped working and is unfixable! Anyway, I got a full HD monitor and plugged that into the HDMI port of the laptop. I have changed the power settings so that I can close the ...
2
votes
0answers
90 views

Dual monitor setup: one screen works, the other is a blank backlit screen

I have a dual monitor setup, on Ubuntu 15.10, with LightDM. Both monitors connected by HDMI, one connected to my NVidia GPU, and the other connected to my integrated graphics card. I recently ran into ...
0
votes
1answer
20 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 ...
0
votes
1answer
119 views

How to correctly patch xrandr to resolve the scaling bug?

I have the xrandr scaling bug described in: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/883319 (In short: I have a HiDPI laptop + an external monitor. When connected, the external ...