[Linux] Alt + Tab while in fullscreen freezes PPSSPP

[Nolkaloid]

What happens?

On Linux (in gnome at least) when you alt + tab out of PPSSPP while in fullscreen mode, PPSSPP freezes and has to be killed.

What should happen?

Alt + tabing off and back to PPSSPP while in fullscreen should not freeze the emulator.

What hardware, operating system, and PPSSPP version?

PopOS!_ 18.04
PPSSPP 1.8.0
Nvidia GTX 1050 2GB - nvidia-driver-435

Maybe related to #802

[unknownbrackets]

A stack trace would help. Is this Qt or SDL or both?

-[Unknown]

[Nolkaloid]

@unknownbrackets I use a self compiled SDL version with Vulkan

Stack trace:
W: VulkanRenderManager.cpp:940: VK_ERROR_OUT_OF_DATE_KHR returned - not presenting

[vnctdj]

"Alt + Tab" is not as obvious on Linux as it is on Windows.
For example, it doesn't exist with my WM (i3).
So, is the condition simply "losing focus while in fullscreen" ?
If yes, I can't reproduce the issue (SDL, OpenGL and Vulkan).

[Nolkaloid]

I don't know if its related, but whenever I receive a notification in KDE the emulator starts lagging like crazy (even if I'm just in the main menu) on the SDL version both openGL and Vulkan.

[hrydgard]

Is it still an issue?

[Nolkaloid]

Yes