Seamless mode not working properly

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Seamless mode not working properly

Postby TVG » 9. Aug 2022, 10:13

Hello,

The seamless mode doesn't work properly. I can see my Ubuntu background where there is no window.
seamless_mode.png
VirtualBox seamless mode, buggy second monitor
seamless_mode.png (101.26 KiB) Viewed 1523 times


The host is Ubuntu 22.04.1 LTS with Linux kernel 5.15.0-43-generic. The guest is Windows 10.
I'm using two monitors. When I start the VM, I can see the Ubuntu background on both screens with the Windows 10 toolbar at the bottom. As soon as I open an application in the first monitor, Windows 10 background shows up properly and stay correct even if I close the app. The behavior in the second monitor is different: When opening an application, the Ubuntu background stays around the window, and if I close the app the Ubuntu background continues to appear there.
seamless_mode_both_monitors.png
VirtualBox seamless mode, both monitors
seamless_mode_both_monitors.png (110.89 KiB) Viewed 1523 times


Many thanks for your help!
TVG
 
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Re: Seamless mode not working properly

Postby scottgus1 » 11. Aug 2022, 14:01

In Seamless, the host background is supposed to appear along with the VM's taskbar. This is correct Seamless behavior:
TVG wrote:When opening an application, the Ubuntu background stays around the window, and if I close the app the Ubuntu background continues to appear there.


This is incorrect:
TVG wrote:As soon as I open an application in the first monitor, Windows 10 background shows up

In Seamless, the VM background is not supposed to appear. This behavior is what Fullscreen would do.

Virtualbox may not be fully compatible with Linux's Wayland desktop system. And Gnome desktop has given some problems. (though I wouldn't know how to fix the issues, as I'm no Linux guru.)

Check to see if you're using Wayland or Gnome, and try X or some other desktop environment. Or wait for a Linux forum guru to help.
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Re: Seamless mode not working properly

Postby TVG » 11. Aug 2022, 14:32

Thanks for the explanation. I thought Seamless was just used to show the host top bar (for Ubuntu host) or bottom taskbar (for Windows host). More than that, I now understand it allows to see the host applications side by side with the guest applications, which I think is pretty cool!

Then, the problem is on the first monitor that continue to show the guest background while it should not. I'm not using Wayland actually because it gives me trouble with another application. I'm using X11.

You are thinking the bug is not a VirtualBox bug but is generated by the Linux host. Is that correct?
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Re: Seamless mode not working properly

Postby scottgus1 » 11. Aug 2022, 15:20

TVG wrote:You are thinking the bug is not a VirtualBox bug but is generated by the Linux host. Is that correct?

Honestly, I don't know. We need a Linux guru to weigh in on that question. Someone will hopefully be along shortly.
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Re: Seamless mode not working properly

Postby TVG » 24. Aug 2022, 09:07

Any Linux guru in the room? :)
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Re: Seamless mode not working properly

Postby mpack » 24. Aug 2022, 13:09

If you want to discuss your Linux host then "Windows Guests" is the wrong forum. Topic moved.
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Re: Seamless mode not working properly

Postby TVG » 24. Aug 2022, 13:31

Many thanks!
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Re: Seamless mode not working properly

Postby csmccarron » 6. Sep 2022, 12:19

This is not just a Linux issue, this also effects Windows guest as well. No one seems to be doing anything to fix it and it has been broken for a very long time.
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Re: Seamless mode not working properly

Postby bangclue » 11. Sep 2022, 04:20

csmccarron wrote:No one seems to be doing anything to fix it and it has been broken for a very long time.


A *very* long time, with no movement on it that I can see. Frustrating as I have a need for it and it's been unavailable for many years. Is there anything we can do to raise this issue's visibility?
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Re: Seamless mode not working properly

Postby csmccarron » 14. Sep 2022, 12:55

bangclue wrote:
csmccarron wrote:No one seems to be doing anything to fix it and it has been broken for a very long time.


A *very* long time, with no movement on it that I can see. Frustrating as I have a need for it and it's been unavailable for many years. Is there anything we can do to raise this issue's visibility?


This has how I have used Virtualbox for years! Sad that it broke with a Windows 10 update and it have never been addressed.
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Re: Seamless mode not working properly

Postby scottgus1 » 14. Sep 2022, 14:05

Are all of you who have this issue using Wayland on the host? If so, please try X on the host, then reboot, then try Virtualbox seamless.
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