No “Fullscreen across all monitors” option for Dual Screen setup

[AgentEccks]

Greetings…

I’m brand new here and to NoMachine (NM). If I’ve missed a post that applies, forgive me, and please direct me to the proper post. 😉

Currently, I have 2 Desktops (1 Linux [Kubuntu], and 1 Win-10) and a Laptop with Linux Mint. Connecting locally using the Laptop is not an issue as it only has the one screen. However, I am not able to utilize the Dual Monitors as I would like while using the Desktops.

While using the Kubuntu Machine with dual monitors, I wish to connect to the Windows Desktop and have both monitors be displayed across both monitors on the Kubuntu Desktop on a separate Virtual Desktop. I have not been able to get this to work.

From the different posts I’ve read and the KB, I’ve seen the following statements:

“NoMachine considers the monitors as one big screen.”

“This means that when the user chooses to span the NoMachine player window across all client-side monitors, remote applications will see the same layout of monitors and can be maximized to a single monitor.”

“Resizing the player window to go fullscreen on all monitors will mean that a portion of the player window will show in each monitor.” (from the KB) – This is what I wish to do. However, I do not have an option the select “fullscreen on all monitors”, the options that are shown to me are as follows:

https://drive.google.com/file/d/1G4kJqobXLQr3EoqNUx3jXrY9KZCZeYZO

Here are the display settings from the Windows Machine:

Monitor 1
https://drive.google.com/file/d/1eceF9tA2bG88nt-Pur9fymwzf_1K8YfR

Monitor 2
https://drive.google.com/file/d/1Y7BBMDEFWLbcLIBoQLO2ui1Reu-6Q8vE

Kubuntu also has options that allow you to apply specific settings to certain windows which the NM window seems to ignore:

i.e.: I set the nxplayer.bin window to move to the top left corner and resize to the full desktop space of 3840×1080. It does move to the top left corner, but it does not resize:

https://drive.google.com/file/d/14g1M7aD574YfstCNGJs4rHSG1lCwKfX9

Also, there is a Video Wall script which allows you to specify any application to go full screen across all monitors. I currently have the nxplayer.bin added to the list, but again, this is ignored and does not work:

https://drive.google.com/file/d/12QzNMOMejuY1wUBmSSMr2lc4UmyL06fA

I recorded a quick video which shows the following:

00:00 – Linux computer with dual monitors (Kubuntu)
00:03 – Virtual Desktop 2 with NoMachine and Windows 10 Local PC with dual monitors.
I can switch between the 2 windows monitors under the NM window displayed in 1 monitor here, and can clearly see there are 2 monitors available.
00:20 – Opening the Display settings for NoMachine, there is no option to select “Full Screen Across All Monitors”
00:36 – Virtual Desktop 4 with VLC and a video with resolution of 3084×1080.
00:40 – When double clicking on the video to go full screen, it opens up Across all monitors via the Video Wall Script.

Video:

https://drive.google.com/file/d/1RKDFPOYHEjrqp4Qa2HtIOaQDAec_wrmR

Here is the info screen of the Win-10 Connection:

https://drive.google.com/file/d/1HxTaDCBK-t7WA6RLkTlYFQbP-Y_7LWhL

Any suggestions on how can I get NoMachine to perform the same behavior is appreciated.

Again, I just wish to see both Win10 Monitors at the same time, across both my monitors, in my other virtual desktop/workspace?

Please advise.

[Britgirl]

Hi,

In order to see the fullscreen on all screens button, the client needs to detect that there are multiple displays available.

While using the Kubuntu Machine with dual monitors, I wish to connect to the Windows Desktop and have both monitors be displayed across both monitors on the Kubuntu Desktop on a separate Virtual Desktop. I have not been able to get this to work.

Strange. I understand that you are connecting to your Windows machine and there are two physical monitors there. Your Kubuntu also has dual physical monitors as well. Have I understood right?

Can you try a connection in the opposite direction? So from your Windows client to the Ubuntu machine? What happens?

Please send us the output of the xrandr command on the Kubuntu machine. Is the Kubuntu using Wayland or Xorg?

[AgentEccks]

Strange. I understand that you are connecting to your Windows machine and there are two physical monitors there. Your Kubuntu also has dual physical monitors as well. Have I understood right?

Yes, that is correct. Although technically, I am using Virtual Display Adapters  for the RDP/NM. I have connected, and was testing with a KVM switch so the 2 monitors were shared between the two systems. This caused issues since the monitors were not kept active upon switching, which lead me here.

The Linux/Kubuntu Machine is a dual boot and I did try to boot into Windows, and connect to the other Windows machine and everything worked as expected. I got both monitors from the remote, displaying across both monitors on the local and even the icon/option for “Full screen across all displays”

…output of the xrandr command on the Kubuntu machine.

~$ xrandr
Screen 0: minimum 320 x 200, current 3839 x 1080, maximum 16384 x 16384
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 connected 1920×1080+0+0 (normal left inverted right x axis y axis) 527mm x 296mm
1920×1080     60.00*+
1680×1050     60.00
1600×900      60.00
1280×1024     75.02    60.02
1440×900      60.00
1280×800      60.00
1152×864      75.00
1280×720      74.91    60.00
1024×768      75.03    60.00
800×600       75.00    60.32
640×480       75.00    59.94
720×400       70.08
DisplayPort-2 connected primary 1920×1080+1919+0 (normal left inverted right x axis y axis) 527mm x 296mm
1920×1080     60.00*+
1680×1050     60.00
1600×900      60.00
1280×1024     75.02    60.02
1440×900      60.00
1280×800      60.00
1152×864      75.00
1280×720      74.91    60.00
1024×768      75.03    60.00
800×600       75.00    60.32
640×480       75.00    59.94
720×400       70.08
HDMI-A-0 disconnected (normal left inverted right x axis y axis)

Is the Kubuntu using Xorg?

X11

 

[AgentEccks]

It seems that my previous post was cut off…

Is the Kubuntu using Wayland or Xorg?

Xorg I believe – System Info
https://drive.google.com/file/d/14zR2-kbcBwPcUWei2ELE0EX9DehUgmOr

=====================================

In any case, I had a number of updates come in for the Kubuntu machine, and after the install, a re-boot was recommended.

After re-booting the Kubuntu machine, and going back into NM, I still do not have the “Fullscreen across all displays” icon/option, BUT now, when entering Fullscreen mode, the window opens across all displays, which is exactly what I wanted.

Once in the Win-10 Virtual Desktop, the main NM window in is the background so I can alt+tab to see the Virtual Desktop taskbar, or simply use the system shortcut keys (ctrl+F1, F2, F3, F4 etc.) to jump to any Virtual Desktop directly.

The connection info. didn’t seem to change:

https://drive.google.com/file/d/1DaDPYN6o1TxCSJITcIJGUq-_kymsNG0H

Also, I had removed the previous setting targeting the nxplayer.bin window for resizing, so not exactly what changed.

Here is a quick video for reference:

https://drive.google.com/file/d/12_NUHNDbYYha_YIuz2GQaVlYcSo2ZkWc

[Britgirl]

We noticed that the monitors overlap by 1 pixel.

Screen 0: minimum 320 x 200, current 3839 x 1080

DisplayPort-1 connected 1920×1080+0+0
DisplayPort-2 connected primary 1920×1080+1919+0

We are checking on our side what improvements can be done, but if you fix the overlapping of the monitors’ position, it should be OK.

[AgentEccks]

We are checking on our side what improvements can be done, but if you fix the overlapping of the monitors’ position, it should be OK.

Took me a bit to figure this one out but I was able to set the monitor position; Based on these resources:

https://askubuntu.com/questions/1256344/how-to-fix-screen-overlap-and-top-left-zoom-of-hd-external-monitors-while-using#1256392

and https://www.youtube.com/watch?v=8BPY4b2FcRg

I entered the content from the attached file into my .bashrc file. If I ever need to make the adjustment again, I can just run  xreset from the terminal, which should fix it, as it doesn’t seem permanent. It seems to reset on each reboot.

However, I DO have the “Full screen on all monitors” icon/option now:

and my xrandr result:

~$ xrandr
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 connected 1920×1080+0+0 (normal left inverted right x axis y axis) 527mm x 296mm
1920×1080     60.00*+
1680×1050     60.00
1600×900      60.00
1280×1024     75.02    60.02
1440×900      60.00
1280×800      60.00
1152×864      75.00
1280×720      74.91    60.00
1024×768      75.03    60.00
800×600       75.00    60.32
640×480       75.00    59.94
720×400       70.08
DisplayPort-2 connected primary 1920×1080+1920+0 (normal left inverted right x axis y axis) 527mm x 296mm
1920×1080     60.00*+
1680×1050     60.00
1600×900      60.00
1280×1024     75.02    60.02
1440×900      60.00
1280×800      60.00
1152×864      75.00
1280×720      74.91    60.00
1024×768      75.03    60.00
800×600       75.00    60.32
640×480       75.00    59.94
720×400       70.08
HDMI-A-0 disconnected (normal left inverted right x axis y axis)

Attachments:

1. bashrc.aliases.txt

[Britgirl]

An easy way to fix the overlap is to do sudo apt install arandr and run that application. It lets you organize the screens and you can fix the overlapping.

[AgentEccks]

An easy way to fix the overlap is to do sudo apt install arandr and run that application. It lets you organize the screens and you can fix the overlapping.

Thanks for that, I’ll check it out.

BTW…

The last file I attached, referencing the xrandr and the .bashrc file was the wrong one. Attached is the correct one.

Attachments:

1. xrandr-bashrc-file.txt

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