New installed 1709 Box does not support 4K resolution

Discussions about using Windows guests in VirtualBox.

New installed 1709 Box does not support 4K resolution

Postby TechnoMax » 5. Nov 2017, 21:33

I installed a new Windows guest with 1709 and the guest additions 5.2.1 (on the webpage it is still called 5.2.0).
My maximum resolution is 1920 x 1440 in the guest windows and I cannot change to portrait anymore landscape is greaed out. The host Windows has 2160 x 3840. In the past never had these restrictions.
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Guest OSses: Windows 10 Pro, 7 and XP

Re: New installed 1709 Box does not support 4K resolution

Postby mpack » 6. Nov 2017, 10:45

In the UI (not he VM), try setting File|Preferences|Display|Maximum Guest Display Size to None.
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Re: New installed 1709 Box does not support 4K resolution

Postby TechnoMax » 6. Nov 2017, 14:57

This did not help. And neither the third menu pint proposal (I tried 2160 x 3000)
TechnoMax
 
Posts: 18
Joined: 20. Jan 2010, 12:46
Primary OS: MS Windows 7
VBox Version: OSE other
Guest OSses: Windows 10 Pro, 7 and XP

Re: New installed 1709 Box does not support 4K resolution

Postby flyweg » 22. Nov 2017, 23:21

Hi, I had a similar issue. This resolved it for me. I followed these instructions first.

In the UI (not he VM), try setting File|Preferences|Display|Maximum Guest Display Size to None.
This then let me go to the guest and set the screen resolution to something way bigger than my monitor could handle.

I shutdown the guest then went back and set the Maximum Display Size to Automatic again.
Restarted the guest and the screen resolution was working dynamically as it did before.
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