Quit streaming and close moonlight causes client system freeze

[locture]

Describe the bug In moonlight-qt 6.1.0, quit streaming can cause unresponsive close button and blinking title bar. Closing the moonlight-qt after quit streaming can cause client system UI freeze.

Moonlight settings (please complete the following information) 4k/120FPS and bitrate 120. No vsync. Other settings are all default.

Client PC details (please complete the following information)

• OS: Windows 11 23H2
• Moonlight Version: 6.1.0
• GPU: Nvidia 4080 Super

Server PC details (please complete the following information)

• OS: Windows 11 23H2
• Sunshine or GeForce Experience version: Sunshine v0.23.1
• GPU: shared client/host GPU passthru
• GPU driver: 556.12
• The server is a virtual machine running in Hyper-V with GPU passthru. Dummy virtual display and audio are used.

Additional context Reverting to 6.0.1 fixes all the above issues.

[pcl04dl3tt3r]

I'm having the same issue. In my case 4070 Ti Super and yes I'm likewise using GPU partitioning; basically the same setup as @locture. This problem started in the last 2 weeks or so.

The host (moonlight) and VM (sunshine) are actually still running, but the desktop cannot be interacted with on the host upon exiting moonlight session. So it's like a frozen graphics overlay is blocking interaction with the desktop. I can move the mouse cursor though I just can't click anything. Ctrl+alt+del does nothing. Alt+f4 likewise nothing.

I have found 2 workarounds:

1 - press winkey and right click and close moonlight on the taskbar rather than exiting the session gracefully.

2 - exit gracefully (ctrl+alt+shift+q), desktop freezes, then unplug the display port from the back of the GPU and plug it back in.