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postmarketOS

Heads up: "On certain devices (Adreno-based GPUs, e.g. OnePlus 6) Flatpaks apps using GTK4 might fail to start with a currently unknown reason.

As a temporary workaround, you can start flatpak apps with GSK_RENDERER=ngl as environment variable."

pmaports issue:
gitlab.postmarketos.org/postma

edge blog post (same text):
postmarketos.org/edge/2025/04/

GitLabGTK4 apps from Flatpak/Flathub fail to start with the new GTK4 rendering backend (#3655) · Issues · postmarketOS / pmaports · GitLab Describe your issue Most of the Flatpak installed apps won't start. What's the expected...
Clayton

@postmarketOS

I found that disabling dmabuf gets gtk4 working again with the default vulkan renderer (using turnip, the adreno vk driver)

This is not an issue in the older Mesa 24.3.x in Alpine Linux when gtk4 apps run outside flatpak. Flatpaks are using Mesa 25.0.x.

I'm not sure if this is a regression in Mesa, in flatpak, and/or in gtk4. Vulkan tools seem to indicate that vk with dmabuf is functional in flatpaks...

Help debugging this further is appreciated!

#gtk#flatpak#mesa3d
Apr 13, 2025, 04:28 PM·Quiet public
6boosts·4favorites
Quiet public
elly
@craftyguy @postmarketOS I wonder if it's related to graphical glitches on Mali GPUs with GTK4...
Quiet public
awachill

@elly @postmarketOS @craftyguy thats probably because gtk4 killed the old renderer gl no?

Quiet public
WeirdTreeThing
@elly @craftyguy @postmarketOS using ngl was the problem on mali, and using the old renderer fixed it, until it was removed.
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