Blank Black Ubuntu Screen after attaching external monitor

Discussions about using Linux guests in VirtualBox.
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: Blank Black Ubuntu Screen after attaching external monitor

Post by scottgus1 »

Please let him know he is welcome ot post a log here on the forum and we can try to troubleshoot.
anjanesh
Posts: 18
Joined: 28. Jan 2021, 13:23
Primary OS: MS Windows 10
VBox Version: OSE Debian
Guest OSses: Ubuntu
Location: Navi Mumbai
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Re: Blank Black Ubuntu Screen after attaching external monitor

Post by anjanesh »

I just remembered, my issue came up only after I installed Docker Desktop which probably enabled Hyper-V on my laptop.
Anjanesh Lekshminarayanan
Ubuntu 20.04 on VirtualBox 6.1
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: Blank Black Ubuntu Screen after attaching external monitor

Post by scottgus1 »

If you installed Docker,, then Hyper-V is probably not enforced by your workplace, and Hyper-V can be disabled. Being able to install Docker is probably showing a lax enough IT policy that disabling Hyper-V might be allowed. Asking the boss, if job security is a concern, might be a good idea, though.
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