问题
I have installed Ubuntu 18.04 as a guest system on a Windows 10 host system using Hyper-V and I want to use the guest system in full-screen mode. To resize the screen as far as I have learned I need to run the guest system in enhanced session mode.
If I am connecting to the guest system it neither lets me choose the screen size nor activate the Enhanced Session Mode.
Enhanced Session Mode (User) and Enhanced Session Mode Policy (Server) are activated under the Hyper-V Settings.
I have also tried to deactivate the RemoteFX setting -> no changes
Guest services are activated -> no changes
As far as I have learned Ubuntu 18.04 LTS should already support the enhanced session mode.
回答1:
As @Guenther Schmitz stated, this feature is part of Windows 10 Update 1803, in order to try it, you need at least build 17063 (as stated here).
If you "only" want to increase your guest screensize, you might want to try setting the videomode. Careful that you remove any RemoteFX 3D Hardware. This way you can achieve 1920x1080.
回答2:
It fails when the auto login is enabled on Ubuntu. I disabled the auto login and it worked. Also make sure you enter your user name lowercase even if it has caps.
回答3:
I have found this guide, which helped me to activate the Enhanced Session Mode: https://www.tenforums.com/virtualization/107147-guide-how-run-ubuntu-18-04-enhanced-mode-hyper-v.html
However, I am not able to connect to the VM using xorg because it always gives me the error "Video remoting was disconnected" and only the options to Reconnect or Exit.
回答4:
This functionality comes with Windows 10 Update 1803
回答5:
I had the same problem yesterday with 19.04, tried all of the workarounds I could find in the internet and nothing helped. if I used 800x600 resolution everything worked "perfectly", when I tried full screen, it would kick me out... then I installed 18.04 LTS and everything just worked....
来源：https://stackoverflow.com/questions/50178154/hyper-v-w10-host-ubuntu-18-04-guest-why-does-enhanced-session-mode-not-work