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I have set up two monitors in my system. One is powered by the HDMI port and the other one is powered by the normal analogue port of the same GPU (Nvidia Ge-force 210).

I just setup twin display in Nvidia settings but can't see cinnamon's panel on the second monitor. How can I fix this?

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I use 2 monitors with Gnome but my panel appears only on the left one, on the top. I'm interested also. –  Sigur Nov 24 '12 at 2:04
    
I think this is one of the problems with Gnome (and Cinnamon as a derivative), they are now taking the route of forcing you into a set up where as Linux users one of our benefits is customization! I think you will struggle with this. Has TwinView enable 2 hot corners (one for each monitor)? –  captain_G Nov 24 '12 at 20:09
    
I'm using Cinnamon 2.2.14 and you basically have 2 options here. You can either use the extension Panel Span to spread the panel across all your screens or you can set the HDNI monitor to be your primary. This is a configurable option in Cinnamon's System Settings. –  slm Aug 28 at 18:51

6 Answers 6

I'm not sure about Cinnamon (GNOME3), but in XFCE you can have multiple panels, which remember where they are to appear. I would expect Cinnamon to be able to do the same. If not I would suggest trying XFCE or using xfce4-panel in the Cinnamon session (possibly as a replacement for its native panel).

The only caveat I'm aware of is that some panel elements (e.g. notification area alias systray) cannot appear on multiple panels at once. This means, that when you disconnect one monitor, the panels move to the remaining one and you have to make sure the ones you want are on top.

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Unfortunately Cinnamon does not appear to have this functionality, (yet?). It only shows a panel on your primary monitor. There are several issues on the project's Github page that are requesting it.

Please add your support there, for example this issue: Taskbar on second monitor #130.

UPDATE #1

There has been some interesting developments on that thread.

I wrote a custom extension, I took inspiration from the 2panelsbottom extension on linuxmint.com, I also created 2 custom applets that are essentially copies of the window list applet that comes with cinnamon, only these show only the windows on each monitor, you also need 2 because as far as I know you cannot have 2 of the same applet loaded at any given time.

I will write out some instructions and upload the extension/applets somewhere later tonight.

Which was then followed up by this:

This could be great. Currently using two monitors, have to move the mouse all the way back to the other screen to access the list of windows. Is there a better way?

Along with this suggestion:

have a look at morePanels-Extension http://cinnamon-spices.linuxmint.com/extensions/view/30 You can configure top and bottom panel for each monitor separately. with the window-list-multi-monitor applet you can get up to 2 panels per monitor and different window-lists.

Attention: the extension makes heavy use of monkeypatching. Because i have to overwrite a lot of functions. The two panels are hardcoded(!) in the layoutManager, appletManager, the main.js file and so on.

using it at Cinnamon 2.2

bugs? https://github.com/fastrde/morePanels

Just so it's clear. The 2 extensions referenced are as follows:

Dual Monitor Panels

This extension modifies the "Classic" panels layout on dual monitor systems so that the second panel appears on the secondary monitor.

Use in conjunction with the window-list-multi-monitor applet I also created and you'll have more of the traditional gnome 2 multi monitor experience much of us used to have.

Window List For Multi Monitor

This applet should be used in conjuction with dual-monitor-panels extension I wrote to create more of a gnome 2 experience many of us dual monitor users once enjoyed.

The extension is simply a fork of the stock Window List applet, but you can add 2 instances, and configure them to show only the windows from one monitor.

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With MATE, you can create new panels and drag them to the second monitor (to enable drag, uncheck "Expand" in the properties, also uncheck "Autohide and "Show hide buttons"). Then, if you add a "Window List" on each display, it will manage each display's windows separately. This is very nice except that the Workspace Switcher still operates on both monitors at once -- hampering the ability to treat the two monitors as independent desktops. Although, it seems that you can workaround this by selectively applying "Always on Visible Workspace".

A setup that I have been using until recently is to enable the proprietary NVIDIA driver which allows you to select each display as a separate X screen -- each with its own panel and Workspace Switcher. There are some limitations of this approach, notably that you can't drag windows between displays, as I mentioned in this other post. This approach worked for me in GNOME2 -- I haven't tested it with the newer desktop environments.

To summarize:

  • Cinnamon: drag:yes, separate-workspace:yes, separate-panel:no, workspace-columns:no
  • MATE: drag:yes, separate-workspace:partial, separate-panel:yes, workspace-columns:yes
  • NVIDIA: drag:no, separate-workspace:yes, separate-panel:yes, workspace-columns:via MATE
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2  
I found an interesting tip in the comments here: There’s another way of adding panels in Mate – a holdover from Gnome2. Keep adding panels, the panels will appear on the primary monitor first (4 edges), then start populating the secondary monitor. Then delete the panels you don’t want. –  nobar Oct 21 '13 at 21:55
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Ahh thank you so much, that was total surprize that I should uncheck 'expand' to make it draggable. –  Dmitry Frank Feb 13 at 14:43

A workaround in Cinnamon is to change which monitor is the first/secondary, then the panel will follow. I learned today that cinnamon-control-center's tool for screen settings allows you to do this.

NOTE: You can also access this via cinnamon-settings too!

In Cinnamon v2.x

   ss#1

   ss#2

(We are not the only ones struggling to find this setting: https://bugzilla.gnome.org/show_bug.cgi?id=636216 )

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Try this extension: Panel Span. You might have to edit metadata.json, to add your particular Cinnamon version { "cinnamon-version": [ "1.4.0", "1.4.1", "1.4.2" ].

Screenshot

    ss#1

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This works with 2.0.14 (Mint 16) and should be the accepted answer (until cinnamon has official support). –  Phil Thomas Jan 22 at 10:29

There is now an extension which looks to give you what you want in Cinnamon. The name of the extension is called: MorePanels.

    ss#1

excerpt

morePanels is an Addon for all the multi-monitor users who want to have...more Panels! I can't get that this is not implemented in Cinnamon. It's a known Issue(feature request) since 11 Jan 2012

I had to monkeypatch a lot of stuff, because the two panels were hardcoded in the cinnamon-ui. Please leave me a comment when something went wrong.

With the window-list-multi-monitor@mazz Addon you can get different window-lists for each monitor (at the moment window-list-multi-monitor supports only two monitors).

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To install it, download it and decompress it in ~/.local/share/cinnamon/extensions –  Kirk Sep 10 at 22:52
    
@Kirk - you can install it right from Cinnamon's UI, no need to d/l it and install it manually. –  slm Sep 10 at 23:49

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