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Oh wow didn't really expect anything other than whole device loss. Just returning garbage does sound bad.

Do you know if they tried to communicate with clients and were just ignored/not implemented or if the APIs just don't support it?

A quick search indicates that "residency"[1] exists, but no idea the extent it's useful/implemented.

[1] https://learn.microsoft.com/en-us/windows/win32/direct3d12/r...

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As I understand, KWin does call glGetGraphicsResetStatusARB(), and on Nvidia GPUs, sleep-wake (or opening apps if it crashed the GPU) would cause KDE to detect a graphics reset and print "Desktop effects were restarted due to a graphics reset" (https://github.com/KDE/kwin/blob/10c04995c1f9f82ddbd6610e5e0...). I haven't used Nvidia GPUs in years and don't know if this is still an issue. I think many apps don't check for graphics resets?

I'm not sure if residency is relevant here; the Microsoft link indicates that eviction makes memory inaccessible from the GPU to make room for other memory, which explains why Linux uses the same name for "backing up" VRAM before sleep (through the same underlying mechanism).

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