Universal-FrameFX 1.4.1-linux-preview.3

Native Linux Vulkan/Wayland preview — silent-exit fixes for desktop launches (CachyOS / GNOME Wayland and similar).

What's new vs preview.2

Startup failures write ~/.local/share/universal-framefx/last-run.log and show an SDL error dialog (no more silent flash-close when stderr is invisible)
GPU selection requires graphics+compute+present for the window surface; prefers discrete GPU; clear error if none
Shader discovery finds AppDir share/ufx-linux/shaders without UFX_SHADER_DIR
Swapchain retries PRE_MULTIPLIED / INHERIT / POST_MULTIPLIED if OPAQUE fails (Wayland)
AppRun / run.sh capture stdout+stderr into the same log (tee when run from a terminal)
docs/TROUBLESHOOT.md: fuse2, --appimage-extract-and-run, Vulkan drivers, GNOME portal, PipeWire

Still included

CSR 1.2, CSR 2.0 upscale, CSR 2.0 InterpFast FG; Game Mode/gamescope path still experimental

Honest limits

Deck Game Mode hardware QA: unverified (Lavapipe selftest only on the build box)
CSR AI / FSR2+ / XeSS / LarkquillAI / DLSS: not on Linux yet
This is a prerelease; Windows Beta10 remains the Latest release

If it still won't open

1. Open ~/.local/share/universal-framefx/last-run.log and paste it when reporting 2. Or from a terminal: ./Universal-FrameFX-*.AppImage --appimage-extract-and-run 3. Or unzip the .zip and run ./run.sh

Artifacts

AppImage, zip, tar.gz for linux-x86_64.