[Help] Impactor (v. 2.0.0 and up) refuses to open on Linux (mint 22.3)

[samuelawachie]

Content

I'm on Linux Mint 22.3 and I'm also having this issue. Only versions from 1.4.1 down open up. The other versions (from 2.0.0) just show the similar errors that was listed in OP and the program fails to open.
I also have installed gir1.2-ayatanaappindicator3-0.1
What could be wrong and how could I fix it please?

`$ ./Downloads/Programs/Impactor-linux-x86_64v2.0.3.appimage
Gtk-Message: 13:41:46.664: Failed to load module "xapp-gtk3-module"
/usr/lib/x86_64-linux-gnu/gvfs/libgvfscommon.so: undefined symbol: g_task_set_static_name
Failed to load module: /usr/lib/x86_64-linux-gnu/gio/modules/libgvfsdbus.so
xkbcommon: ERROR: couldn't find a Compose file for locale "en_NG" (mapped to "en_NG")
[2026-01-28T12:41:47Z ERROR wgpu::backend::wgpu_core] Handling wgpu errors as fatal by default

thread 'main' (33657) panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wgpu-27.0.1/src/backend/wgpu_core.rs:1058:30:
wgpu error: Validation Error

Caused by:
In Device::create_shader_module, label = 'iced_wgpu.quad.solid.shader'

Shader validation error: Function [1] 'unpack_u32' is invalid
┌─ iced_wgpu.quad.solid.shader:9:1
│
9 │ ╭ fn unpack_u32(data: vec2) -> vec4 {
10 │ │ let rg: vec2 = unpack2x16float(data.x);
│ │ ^^^^^^^^^^^^^^^ naga::ir::Expression [2]
11 │ │ let ba: vec2 = unpack2x16float(data.y);
12 │ │
13 │ │ return vec4(rg.y, rg.x, ba.y, ba.x);
│ ╰─────────────────────────────────────────────^ naga::ir::Function [1]
│
= Expression [2] is invalid
= Shader requires capability Capabilities(SHADER_FLOAT16_IN_FLOAT32)

Expression [2] is invalid
Shader requires capability Capabilities(SHADER_FLOAT16_IN_FLOAT32)

note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
Aborted (core dumped)
`

[Milli189]

have you tried the flatpak version?

[samuelawachie]

have you tried the flatpak version?

I had the same issues with the flatpak, and with the flatpak one has the added demerit of not having a way to chmod and having complete easy control over the versioning that is downloaded and installed. In other words, it also didn't open (like the AMD version I downloaded). I later found that chmod +x to the appImage made the versions <2.0 to run okay.
And I just don't like flatpak tbh if I can help it. I love that I could install an AppImage with all its dependencies to booth.
The flatpak doesn't open last I checked.

[khcrysalis]

Comparing both v2.0.0 and v1.0.0 isn't really a comparison because they use entirely different UI frameworks.
I'll see if theres any known issues with wgpu.

[marcinmajsc]

You have in system different versions of glib/gio. I think appimage try use them with includes another libs version inside.

Try unpack appimage to folder and replace few libs:

cd squashfs-root
find usr/lib -maxdepth 2 -type f -name 'libglib-2.0.so*' -o -name 'libgio-2.0.so*' -o -name 'libgobject-2.0.so*' | while read f; do mv -v "$f" "$f.bak"; done

Install missing package in system:

apt update && apt install xapp

Try run:

./AppRun

[samuelawachie]

You're partially right that forcing WGPU_BACKEND=gl fixes this issue and the 2.0.3 version was able to run.
I created an impactor.sh script that reads thus:
#!/bin/sh
export WGPU_BACKEND=gl
exec "$(ls ./Impactor-linux-.appimage | sort -V | tail -n1)" "$@"
So that when I run the script, the latest AppImage that I have downloaded to that folder runs, and it works well. So all one would have to do is, download the latest AppImage, and run the script.
ls ./Impactor-linux-.appimage | sort -V | tail -n1
would also list what appimage it is about to run.
Thanks
(perhaps the devs can make this fix permanent so that I don't have to do this workaround)..

[mq1]

mq1/TinyWiiBackupManager#515

fyi user of my app reported an unrelated issue, but they're successfully running an Iced/wgpu app on Linux Mint 22.3 (Flatpak).

If it can be of any help, I'm distributing the linux binary with wgpu+vulkan (no OpenGL), and tiny-skia

[features]
default = ["wgpu", "native-tls"]
wgpu = ["iced/wgpu-bare", "dep:wgpu"]
tiny-skia = ["iced/tiny-skia"]
...

[target.'cfg(target_os = "linux")'.dependencies.wgpu]
version = "27"
optional = true
default-features = false
features = ["std", "parking_lot", "vulkan"]

additionally, I found that setting WGPU_POWER_PREF to none solves some wgpu issues for some users mq1/TinyWiiBackupManager#499

unsafe {
    env::set_var("WGPU_POWER_PREF", "none");
}

hope these info could be useful here

edit: @samuelawachie by any chance, does this AppImage (https://github.com/mq1/TinyWiiBackupManager/releases/download/v5.0.2/TinyWiiBackupManager-v5.0.2-linux-x86_64.AppImage) run on your system? just so we could narrow down the issue

[samuelawachie]

edit: @samuelawachie by any chance, does this AppImage (https://github.com/mq1/TinyWiiBackupManager/releases/download/v5.0.2/TinyWiiBackupManager-v5.0.2-linux-x86_64.AppImage) run on your system? just so we could narrow down the issue

$ ./TinyWiiBackupManager-v5.0.2-linux-x86_64.AppImage

thread 'main' (32022) panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wgpu-27.0.1/src/backend/wgpu_core.rs:1058:30:
wgpu error: Validation Error

Caused by:
In Device::create_shader_module, label = 'iced_wgpu.quad.solid.shader'

Shader validation error: Function [1] 'unpack_u32' is invalid
┌─ iced_wgpu.quad.solid.shader:9:1
│
9 │ ╭ fn unpack_u32(data: vec2) -> vec4 {
10 │ │ let rg: vec2 = unpack2x16float(data.x);
│ │ ^^^^^^^^^^^^^^^ naga::ir::Expression [2]
11 │ │ let ba: vec2 = unpack2x16float(data.y);
12 │ │
13 │ │ return vec4(rg.y, rg.x, ba.y, ba.x);
│ ╰─────────────────────────────────────────────^ naga::ir::Function [1]
│
= Expression [2] is invalid
= Shader requires capability Capabilities(SHADER_FLOAT16_IN_FLOAT32)

  Expression [2] is invalid
    Shader requires capability Capabilities(SHADER_FLOAT16_IN_FLOAT32)

note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
Aborted (core dumped)

No, it didn't run successfully. That was what was printed on the terminal. And should I attempt to run it via the GUI, it just doesn't open at all (nothing happens).
As we can see, that error log is very similar to the one in the OP. Must be the same issue...

[mq1]

edit: @samuelawachie by any chance, does this AppImage (https://github.com/mq1/TinyWiiBackupManager/releases/download/v5.0.2/TinyWiiBackupManager-v5.0.2-linux-x86_64.AppImage) run on your system? just so we could narrow down the issue

$ ./TinyWiiBackupManager-v5.0.2-linux-x86_64.AppImage

thread 'main' (32022) panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wgpu-27.0.1/src/backend/wgpu_core.rs:1058:30: wgpu error: Validation Error

Caused by: In Device::create_shader_module, label = 'iced_wgpu.quad.solid.shader'

Shader validation error: Function [1] 'unpack_u32' is invalid ┌─ iced_wgpu.quad.solid.shader:9:1 │ 9 │ ╭ fn unpack_u32(data: vec2) -> vec4 { 10 │ │ let rg: vec2 = unpack2x16float(data.x); │ │ ^^^^^^^^^^^^^^^ naga::ir::Expression [2] 11 │ │ let ba: vec2 = unpack2x16float(data.y); 12 │ │ 13 │ │ return vec4(rg.y, rg.x, ba.y, ba.x); │ ╰─────────────────────────────────────────────^ naga::ir::Function [1] │ = Expression [2] is invalid = Shader requires capability Capabilities(SHADER_FLOAT16_IN_FLOAT32)

  Expression [2] is invalid
    Shader requires capability Capabilities(SHADER_FLOAT16_IN_FLOAT32)

note: run with RUST_BACKTRACE=1 environment variable to display a backtrace Aborted (core dumped)

No, it didn't run successfully. That was what was printed on the terminal. And should I attempt to run it via the GUI, it just doesn't open at all (nothing happens). As we can see, that error log is very similar to the one in the OP. Must be the same issue...

my guess is broken mesa drivers for vulkan (?)

i started a build with vulkan completely removed; if this works for you, @khcrysalis could consider applying the same fix to Impactor

https://github.com/mq1/TinyWiiBackupManager/actions/runs/21718514016