Fixing RDP Resolution Issues in Ubuntu Desktop Hosted on Hyper-V

Step 1: Install Hyper-V Linux Integration Services (LIS)

Run the following commands to install the required packages and reboot your VM:

sudo apt update
sudo apt install linux-azure
sudo reboot

Step 2: Enable Enhanced Session Mode in Hyper-V

1. Open Hyper-V Manager.

2. Select your Ubuntu Desktop VM.

3. Click Settings → Integration Services.

4. Ensure Guest Services is enabled.

5. On your Hyper-V host, run this command in powershell to enable Enhanced Session Mode:

    Set-VM -VMName "YourUbuntuVMName" -EnhancedSessionTransportType HvSocket
   

6. Restart the VM and try connecting again.

Step 3: Verify Resolution

After rebooting, check the available resolutions:

Step 4: RDP Client Configuration

In your RDP client, ensure these settings:

• Select Full Screen in display settings.

• For Microsoft Remote Desktop, ensure Resolution: Full Screen is enabled.

  

If above steps did not work, try steps given below:

Step 5: Force Resolution with Kernel Parameters (GRUB Settings)

1. Open the GRUB configuration file:

    sudo nano /etc/default/grub
   

2. Find the line starting with GRUB_CMDLINE_LINUX_DEFAULT and append this:

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

3. Save the file by pressing CTRL + X, then Y, and Enter.

4. Update GRUB and reboot:

    sudo update-grub
    sudo reboot
   

5. After reboot, go to Settings → Display on your Ubuntu Desktop and set the desired resolution for the instance.