Video memory leak

[Rabcor]

I'm not sure what version this behavior started in, jsut that it's recent.

`$ hyprctl version
Hyprland 0.48.1 built from branch at commit 29e2e59 (version: bump to v0.48.1).
Date: Fri Mar 28 16:16:07 2025
Tag: v0.48.1, commits: 5937
built against:
aquamarine 0.8.0
hyprlang 0.6.0
hyprutils 0.6.0
hyprcursor 0.1.1
hyprgraphics 0.1.3

no flags were set`

Yesterday when I booted Hyprland it was using 100mb of vram by the time i went to sleep. about 10 hours later it is using 166mb of vram.

I'm not sure if this gradually happens over time or not, however I have observed an easily reproducible way to inflate the VRAM usage.

1. Plug in an external display (this increases VRAM usage)
2. Unplug the external display (VRAM usage is unchanged)

Basically, VRAM usage will ballon up a bit everytime a display gets plugged in. Hyprland doesn't let go of VRAM that it should no longer be using.

[vaxerski]

dupe of #9893 and fixed in git

[Rabcor]

3MiB of VRAM is definitely wrong for sway.

There's also this: hyprwm/aquamarine#165 which you might want to try.
It's not.

The reason the number is so small is because neither Hyprland nor Sway are actually rendering on the nvidia gpu, as I have already said like 3 times at least. I'm not sure why it's even using any vram at all (i think it has to do with how wayland works, wouldn't be able to use the gpu if the compositor wasn't hooked up to it somehow first, in X the vram usage by window managers for that card is 0, doesn't use it unless I invoke prime-run to run something on it)

I'll have to see if the aquamarine patch will help.

[Rabcor]

There's also this: hyprwm/aquamarine#165 which you might want to try.

@vaxerski it didn't work.

I recompiled aquamarine with the pr, then recompiled hyprland-git against it, but the problem was not affected in any way.

Edit: I rechecked how the amd iGPU is behaving and as it turns out, it might actually have the same problem; I believe in the case of the igpu though it's just lazy about freeing up the vram because it seems to free it up when it needs more (once it hits the 512MiB Threshold) unlike the nvidia one.

On sway the nvidia card's vram doesn't get used at all when plugging in a hdmi display, ideally you would be able to replicate that behavior too (Since there's little sense using vram on a card that isn't being used to render in the first place).

[vaxerski]

wait so Hyprland is running on your iGPU, but it's leaking ram on your dedicated gpu? If that's the case then this could (I think) only be a bug from aq

[Rabcor]

wait so Hyprland is running on your iGPU, but it's leaking ram on your dedicated gpu? If that's the case then this could (I think) only be a bug from aq

Yes, that is exactly what is happening, whether it's a bug in hyprland or aquamarine you would know better than me.

[vaxerski]

Open a bug report over @ aquamarine pls, because I am pretty sure it can't be a hyprland leak as hyprland doesn't touch gpus it doesnt run on