(Solved) Win 10 VM uable to set 4K resolution

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satimis
Posts: 506
Joined: 12. Jun 2007, 03:41

(Solved) Win 10 VM uable to set 4K resolution

Post by satimis »

Hi all,

Daily working PC:
Host - Ubuntu 20.04
VM/Guest - Win 10 home, Win 10 pro and Ubuntu 20.04

It is very strange all Win 10 VMs unable to set 4K resolution, max 1150. All Ubuntu VMs can set 4K resolution. Guest Addition has been installed.

Please help.

Regards
Last edited by satimis on 10. Nov 2021, 16:32, edited 1 time in total.
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: Win 10 VM uable to set 4K resolution

Post by scottgus1 »

All such inquiries should have a posted vbox.log.

Start the VM from full normal shutdown, not save-state. Run until you see the problem happen, then shut down the VM from within the VM's OS if possible. If not possible, close the Virtualbox window for the VM with the Power Off option set.

Right-click the VM in the main Virtualbox window's VM list, choose Show Log. Save the far left tab's log, zip it, and post the zip file, using the forum's Upload Attachment tab.
satimis
Posts: 506
Joined: 12. Jun 2007, 03:41

Re: Win 10 VM uable to set 4K resolution

Post by satimis »

scottgus1 wrote:All such inquiries should have a posted vbox.log.

Start the VM from full normal shutdown, not save-state. Run until you see the problem happen, then shut down the VM from within the VM's OS if possible. If not possible, close the Virtualbox window for the VM with the Power Off option set.

Right-click the VM in the main Virtualbox window's VM list, choose Show Log. Save the far left tab's log, zip it, and post the zip file, using the forum's Upload Attachment tab.
Hi,

Thanks for your advice.

The final step of following YouTube video solves my problem;

Fix VirtualBox Windows 10 resolution 1920x1080 or 4k (Outdated Video, Read Video Description)
https://www.youtube.com/watch?v=ygxMqXO9WW4


I already have guest addition installed

Regards
mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: (Solved) Win 10 VM uable to set 4K resolution

Post by mpack »

We prefer not to rely on external authorities. Please post the solution here where it can be evaluated.
satimis
Posts: 506
Joined: 12. Jun 2007, 03:41

Re: (Solved) Win 10 VM uable to set 4K resolution

Post by satimis »

mpack wrote:We prefer not to rely on external authorities. Please post the solution here where it can be evaluated.
My solution steps :-
On Win 10 VM

-> File -> Preferences -> Display
Maximum Guest Screen Size: [Hint ]
Width: [3860 ]
Height: [2160 ]
-> OK

Restart Win 10 VM
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: (Solved) Win 10 VM uable to set 4K resolution

Post by scottgus1 »

satimis wrote:On Win 10 VM

-> File -> Preferences -> Display
Are you sure that wasn't:
In the main Virtualbox window

-> File -> Preferences -> Display
There is no setting in a VM's Display settings to limit the screen soze, but there is such a setting in the main Virtualbox window.

Also, does setting "Maximum Guest Screen Size" to None achieve the same result?
satimis
Posts: 506
Joined: 12. Jun 2007, 03:41

Re: (Solved) Win 10 VM uable to set 4K resolution

Post by satimis »

scottgus1 wrote: - snip -

Also, does setting "Maximum Guest Screen Size" to None achieve the same result?
I haven't tried None before. I selected Hint following the YouTube video

Original screen size:
Width: 640
Height: 480

The screen of all Win 10 VMs (there are 5) looked very small. I couldn't increase the screen size with mouse.

Now I can adjust Win 10 VM screen with mouse to any size, even to full screen of my Dell 32" 4K display.
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