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Asked: 2020-04-26 16:00:31 +0800 CST

Ubuntu 20.04 Full Screen Mode Resolution in Hyper-V is very small

  • 772

When I enter 'Full Screen Mode' on an Ubuntu VM in Hyper-V, it shrinks to a very small resolution that isn't usable. I've tried editing the /etc/default/grub file recommended in other Q&As without luck. I previously had the same issue with 18.04, so I switched to server and ssh'd to the VM; however, I would really like to get a useable full screen desktop going in Hyper-V.

Thanks

display-resolution hyper-v

3 Answers

  1. The xrdp.service is not starting because the address already in use. There is an issue about this on github.

    To solve this:

    First, get the scripts from GitHub:

    sudo apt-get update
sudo apt install git
git clone https://github.com/Microsoft/linux-vm-tools.git ~/linux-vm-tools
cd ~/linux-vm-tools/ubuntu/18.04/

    Then, make the scripts executable and run them...

    sudo chmod +x install.sh
sudo ./install.sh
sudo reboot
cd ~/linux-vm-tools/ubuntu/18.04/
sudo ./install.sh
sudo systemctl enable xrdp.service

    Open /etc/xrdp/xrdp.ini for editing:

    sudo gedit /etc/xrdp/xrdp.ini

    add these two lines (or change them if present):

    port=vsock://-1:3389
use_vsock=false

    restart the service and system:

    sudo xrdp restart
sudo shutdown -h 0

    On Windows Powershell with Admin Privileges, run the command:

    Set-VM -VMName <your_vm_name>  -EnhancedSessionTransportType HvSocket

    This solution is adapted from the Microsoft Tech Community and a post on medium.com

    • 11

  2. You can use these steps:

    • Edit Grub

       sudo vi /etc/default/grub

      to modify the resolution during boot

    • Modify

       GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video=hyperv_fb:1920x1080"

    • Modify

       GRUB_CMDLINE_LINUX="quiet splash video=hyperv_fb:1920x1080"

    • Save

    • Update grub with

       sudo update-grub

    • Reboot

    • 2

  3. I tried different things to get the login dialog with the possibility to adjust the screen resolution. After a new installation of Ubuntu with the predefined Hyper-V package, it worked initially. At some point after that, however, not anymore. It was really annoying. But now I've discovered a possibility that always works for me.

    • Shut down Ubuntu closing the remote connection.
    • Deactivate the guest services for the VM at the integration services.
    • Start Ubuntu without guest services.
    • Quit Ubuntu again and close remote connection.
    • Activate the guest services again.
    • Start VM and connect and voila, the login dialog with the option to select the screen resolution is back.
    • 0