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

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ubuntu 12.04 LTS not detecting my 2nd display

Hi I just assembled my pc and got 2 graphic cards into it, I installed ubuntu 15.04 and both screens work , however the pc randomly freezes for a few seconds, so I installed 12.04 and doesnt freeze ...
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Dual Monitors Stayed Mirrored

I am running a T450 with Intel HD Graphics 5500 with Ubuntu 14.04 LTS. I am also using a Lenovo Ultra Dock that supports a DVI input and a VGA input. Whenever I connect two monitors to both the DVI ...
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1answer
5 views

External display adapter (SIIG) does not work in Ubuntu 14.04

I have Ubuntu 14.04. I wanted to add another monitor to my Lenovo laptop, so I bought an external video adapter (USB-2.0 to VGA). Interestingly enough, the adapter displays the Ubuntu login prompt, ...
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7 views

Open source graphics driver, screen not updated unless mouse moved

I have 3 monitors with an extended desktop, and the open-source graphics driver supplied with Ubuntu. On 2 of the monitors, everything works fine, but the 3rd screen is sometimes not updated properly ...
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How can I have both TwinView for an UHD monitor, and a separate monitor?

Old situation I used to have an HD (1920x1200) monitor and a smaller (1280x1024) monitor connected to my nVidia GeForce GTX 660 Ti. In the NVIDIA X Server Settings this are automatically two ...
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13 views

Second screen blinking after upgrading to 15.04

I have upgraded 14.04 to 14.10 then to 15.04. I'm using a Dell laptop without dedicated video card (Intel i5 integrated graphics), lid is closed, I have one monitor plugged into VGA, the other into ...
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1answer
35 views

External HDMI Monitor not working with vmlinuz-3.13.0-51-generic

My colleagues and I (four of us) have been using Ubuntu 14.04 LTS since it was released. We are using HP ENVY 17 Laptops with the HDMI port running an external monitor. Since upgrading to 3.13.0-51 ...
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hdmi intermittent projector problems

I am connecting an Ubuntu 14.04 machine running xfce4 to a projector via the HDMI output (using a Belkin adapter), and I find that, initially, it detects the projector output, allows me to mirror ...
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37 views

A file not visible on desktop if one screen is vertically oriented?

I have 2 screen where one is normal horizontal, and the other one is vertical. After I changed that files that I download to desktop are no longer visible. I can see them in Nautilus->Desktop, but ...
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14 views

Add virtual X11 screen to use via VNC

I'm trying to add a second screen to my ubuntu 14.04 gnome setup, via a VNC client. To be clear: I don't want to connect to a different session, but the same. However, I want to see a different ...
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24 views

Lubuntu 14.04 on Eee PC: bad screen problem

I've installed Lubuntu on my Eee PC some time ago and generally everything works well. However I'm experiencing a serious problem: the screen gets grey with stripes and I have a hard time to get it ...
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28 views

Second monitor displays black screen after adding new X Screen with Nvidia X Server Settings

Before this problem occurred, I had a different problem, which was that most programs I would open would automatically open onto the wrong monitor. To fix this, I went into 'Nvidia X Server Settings' ...
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17 views

TV started reporting no signal from HDMI Port

After 6 months of using my LG5500 as an external monitor for my Acer Aspire E1-472g laptop connected via the HDMI port, two days ago the TV started responding "No Signal". It is possible that what ...
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2answers
62 views

Easy configuration of dual monitor? [duplicate]

I recently bought an external monitor which I use in Portrait mode attached to my laptop. With quite some regularity I have to connect/disconnect it monitor (I work at home and often need to move to ...
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34 views

Xorg.conf is not changing the Display orientation

I am currently using Ubuntu 15.04 with a GTX 570 on 346.46. I have a 2560x1440 display with a 1080x1920 (portrait) display to the right. I am using i3 as a window manager. The displays seem to be set ...
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26 views

Rotating a yoga pro 2 screen with xrandr on ubuntu 15.04

I just upgraded to ubuntu 15.04 and the xrandr command I used to use has stopped working: xrandr --output eDP1 --rotate inverted All the other rotations work fine, "left, right, normal." But ...
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18 views

Extended monitor scaling

I have a Dell XPS 13 running Ubuntu 15.04 with a 3200x1800 display and an external 1920x1200 monitor that is connected via DVI through a mini displayport adapter. The UI on the built-in display is ...
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23 views

What's causing my login resolution to reset incorrectly?

I'm trying to set up my 4 monitor system so all monitors are of the correct orientation during the login screen. I've set my lightdm.conf file up as follows: [SeatDefaults] ...
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6 views

alt tab doesnt work for citrix xenapp in full screen

Alt+Tab doesn't work when Citrix is in full screen above question is related to 12.04. However, I am using 13.1 citrix xenapp on 14.04 kubuntu and suggestions dont work in this configuration. I ...
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57 views

Ubuntu 15.04 Doesn't Detect Monitor - xrandr crashes

Ubuntu 15.04 doesn't automatically recognise my monitor. It does not show up in display settings. This is the same as in 14.10 (and I have done a clean install). Apart from this xrandr just freezes ...
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1answer
48 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 ...
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33 views

Compiz eat up my entire CPU after updating to 15.04

I have this problem only when I use my laptop with an external monitor (this is the way I used to use it). So every time I start my laptop with the external monitor connected, it is unusable. When ...
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14 views

Laptop cursor flicker when docked and connected with 2nd display

new to Ubuntu here. I made my Dell Precision M4700 Dual bootable between windows 7 and Ubuntu 14.04.2 LTS. Ubuntu is installed on a separate hard drive. So far everything works wonderfully, except ...
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Dell M3800 with Nvidia Driver and External Monitor

I have problems with my notebook DELL Precision M3800 with NVIDIA Quadro K1100 and Intel. I need to use the proprietary driver nvidia (I tested the 331 that 349) with my external monitor. My ...
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2answers
46 views

Launch application on a specific monitor

I have Ubuntu 14.04 and two monitors. When I open applications I need some of them to be on the primary monitor and others On the secondary. At the moment, apps always open in the primary monitor. I ...
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Fullscreen window placement becomes fixed in expo workspace after switching monitors

I wonder if there is any way to loosen the fullscreen window placement rules under 14.04. Rules are improved from 12.04 to 14.04 for conserving placement following a monitor switch (e.g., switching ...
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35 views

HDMI Monitor Detected but no output

I am unable to get dual display working with Ubuntu 14.04 on Dell XPS 8700 with Nvidia GeForce GT 635. I have two monitors (40" TVs actually) connected via DVI-HDMI and HDMI-HDMI cables. The DVI-HDMI ...
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110 views

Ubuntu 15.04 nvidia 346.59 external monitor display - windows stretched; click offset is off

I have used the same hardware setup with Ubuntu 14 and didn't have any problems with the nvidia driver (not sure which one I used back then). Seems to work fine in "only external monitor" "only ...
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29 views

14.04 Resolution changes on startup

I have a laptop running 14.04 permanently connected up through my projector. I basically use this as a desktop and never power it down or log off. The problem is whenever I change the input on my ...
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1answer
28 views

How to make Ubuntu change the wallpaper when monitor is disconnected?

I have a laptop, and most of the times I use it it's connected to a monitor. But this monitor has a different resolution than the screen of my laptop, so the background image I use on my monitor ...
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18 views

How to fix low-resolution wallpaper?

Whenever my computer starts and I log in, the desktop wallpaper loads at half resolution. Everything else is native resolution, and if I reselect the wallpaper it loads at full resolution. It's JUST ...
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118 views

AMD Graphics with Multiple Monitors

I have two graphics cards in my computer and I'm having trouble getting them to play nicely with my 4 monitors. Before upgrading to Ubuntu 15.04 from 14.10, I had all 4 working together nicely, though ...
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11 views

Span wallpaper bigger then screen (dual monitor)

I use Ubuntu 14.04 in my notebook (1366X768) with an external monitor (1600X900) and I want to span some wallpapers, but few of then are bigger (on both width and height) then my total screen size. It ...
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how to stop automoving opened windows when second monitor connected in ubuntu 14.04?

I am running Ubuntu 14.04 on my notebook and when i connect external monitor if it has "left" position configured, all opened windows move to external monitor, if external monitor has "right" position ...
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19 views

How to set different scaling on multiple monitors?

I have a notebook with a resolution of 3200x1800, running Ubuntu 14.04.2 LTS with kernel 4.0.0-040000-generic. Unitys scaling function works great to magnify the menus, titlebar and applications. Now ...
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32 views

bumblebee multi monitoring setup

I'm trying to create a multi-monitoring setup with bumblebee at Ubuntu 15.04. config: VGA+HDMI at intel HD2000 and DVI at nvidia geforce 210 I'm using the proprietary nvidia 340 driver. I think ...
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2answers
35 views

Please help with kodi and disabled monitor

I check Blank other displays option on kodi. And when play movie on tv kodi dim my main monitor, but after stop movie and close kodi my main display not turn on. I try restart, uncheck Blank other ...
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External monitor on laptop motion blur issue

I have a certain problem with my external monitor on laptop. Everything on ext. monitor leaves motion trace (see screenshot and picture). When i do screenshot that motion doesnt exist but i took a ...
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2answers
323 views

15.04 - Closing lid does not suspend laptop if connected to external monitor

Since the upgrade to 15.04, my laptop's behavior on closing lid has changed: if it is connected to an external monitor, it will not suspend. In addition, all the windows are now flushed to the ...
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25 views

Dual display settings problem

I am running Ubuntu 14.04 with dual displays in an extended display configuration. When I play any of several games both displays go to clone configuration and must be manually reset after the program ...
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23 views

Ubuntu 14.04 + Mate + Compiz Hang when switching displays

I have a Thinkpad W540 laptop running Ubuntu 14.04 (Intel Graphics) with Mate and Compiz. During normal operation things seem fairly stable, however any time I add or remove a monitor the display ...
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22 views

ubuntu 14.02 lts never boots the same way and same number of screens

It is crazy, my ubuntu 14.02 LTS never starts the same way,,,,in a such a way, It seems it is teasing me on purpose lol. I have a dual boot on 2 separate hard drives. At starting, it asks which OS we ...
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1answer
62 views

How to debug xrandr not setting up the desired resolution?

I need some help in figuring out why does xrandr failes to set the desired resolution. I have a dual monitor setup: 13" laptop preferring 2560x1440 resolution 24" monitor preferring 1920x1200 ...
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1answer
82 views

Ubuntu 14.10 dual monitors not working (display port & VGA)

$ lspci 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller (rev 09) I'm attempting to run 2 monitors but only one is working. The VGA ...
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6 views

Want to use second monitor but has no EIED

I have a small monochrome CRT display I would like to use on my Ubuntu PC. This display is a Smith Corona typewriter display, quite old. Under Windows it could be used with a max 600x400 resolution, ...
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9 views

How to specify which HDMI jack outputs audio

I have tried the solution on this question, but it didn't quite work for me - I imagine my problem is more universal than my hardware, but for good measure, I have an AMD Radeon 290 - I originally ...
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Ubuntu 14.04.2 Trusty with two gpu cards, desktop on wrong screen

I have a fresh install dualbooot, first I installed windows 7, then ubuntu trusty desktop 14.04.2., then I was able to get amd catalyst 14.9 for linux x64 working. When doing this with both my amd r9 ...
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Ignore second monitor workspaces

I recently switched from Mint to Ubuntu. In Mint I had an option to only use my primary monitor for workspaces. I can't seem to replicate that in Ubuntu. I am fairly new to Linux. I almost always got ...
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1answer
37 views

How to make multiple monitors work just like in Windows?

I've tried various DEs (Xfce, MATE, GNOME...), but I couldn't set up my screens properly in any of those. Here's the setup I'm looking for: 2 screens with different resolutions (LVDS on the left - ...
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29 views

Problems getting 2 Video cards working

I'm currently running Ubuntu 14. my system is fairly old.. Motherboard is d925xbc with p4 CPU. I have an ATI video card that runs two monitors no problem. I wanted to try getting 3 monitor to work but ...