OK, why would you want this? What it looks like you want can easily be done without all the complexity of setting up separate X seats. According to the spec site on Dell, that little black box has both a DisplayPort and HDMI port. You don't even need a splitter.
Is there something here I'm missing?

See the section titled "Separate Panels" on this page http://jsmylinux.no-ip.org/basic-inf...dual-monitors/

There is no section on that page called "Separate Panels". There is one called "Individual Panels", and that leads back to my previous post (#19) where I said that you can do that and more without all the hassle.

What part of using a standard 2 display setup requires a separate X server running? Seriously, go into the MATE control center, click on Displays (with both displays connected), and manipulate them as I posted in the attachment in post #15 and I think you'll be pleasantly surprised at how easy this actually is.

Doing what you're describing with the separate X servers running looks like it's only available via the nVIDIA driver (and that's because it borks up the original display settings and you need to do it that way.)

Worst case scenario you waste 5 minutes.

Thanks Ihatewindows522,

Sorry - Individual Panels - my error. Back to your prior post...

With two monitors sitting side by side as you indicate: If I open a window on the left monitor and drag it to the right monitor, all is well. UNTIL I decide I need to switch to a different workspace on the left monitor. The right monitor will also switch to the new workspace and I will lose access to the window which I dragged to it. At least that is what happens with Mate or Gnome. I have no idea what happens with Unity as I do not and will not use it.

By establishing separate X screens I can change workspaces on the two monitors independently. And I do, a LOT.

Ken

p.s. Looking more closely at your screen shot of "Displays" it appears that there is a launcher strip or stripe or whatever it is called in Unity on the left edge of EACH display. Perhaps this gives the functionality of two Gnome/Mate panels? If so, that is an enhancement to the situation which I see in Gnome or Mate. On the other hand... does Unity even support multiple workspaces? I guess I need to do a quick virtual machine build and find out. As I mentioned a couple of posts back I am hardware limited at the moment so two monitor testing is on hold for a couple of days.

No harm no foul. Just a little confusing.

Alright, now we're getting somewhere. This is an issue of window managers, not necessarily X sessions. It looks like Enlightenment 0.19 supports it, so you might want to give that a try first.

https://askubuntu.com/questions/1261...n-each-monitor

Think of it more like the dock on OS X. It is one "panel", just on two displays. Yes, Unity has very good support for multiple workspaces and it feels very natural, to me at least.

Thanks again Ihatewindows522,

I did some reading on Unity and workspaces. It seems that Canonical does not want users to use them as enabling multiple workspaces appears to be somewhat cumbersome. But that is neither here nor there...

I am running CentOS 6 with Gnome2 and CentOS 7 with Mate. I have relegated Ubuntu Mate to a couple of old 32 bit machines as I have found Ubuntu 15.x to be somewhat flaky. Disappointing as I like the simplicity of the Mate interface.

From what I can decipher Mate uses Marco on Ubuntu and Lightdm on CentOS 7. I have no idea how to replace that with Enlightenment. Perhaps I will install the Mate desktop on top of Ubuntu Unity (which I think has Enlightenment) and see what happens.

Ken

I installed mate-desktop-environment on top of Ubuntu (Unity) 15.10. When I logged into the Mate desktop I found that lightdm was running. Enlightenment was not. I logged out and back into the Unity desktop. Lightdm was still running. I shut the virtual machine down. Then it dawned on me that I needed to see what was running if I first logged into Unity. I have been sitting here with the spinner spinning for about 10 minutes trying to log me into Unity. Ubuntu has been going downhill since 8.04.

Ken

p.s. I forced a power cycle of the VM. I CAN login to Mate. I can then logout and back into Unity. I do not think this experiment is leading anywhere. I will install Ubuntu Unity again and see if I can figure out what window manager it runs by default.

Enlightenment should show up as another desktop environment to use.
https://youtu.be/7YcwrS_rKBs?t=2m8s
It can be used as a window manager inside MATE, but I'm not quite sure how to do that offhand.