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Crash on startup on Ubuntu 24.04 #1126

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@benbucksch

Is there an existing issue for this?

  • I have searched the existing issues.

What's the problem?

I downloaded the .deb and installed it as root. I started sniffnet from commandline and from app menu.
I then downloaded the AppImage, set chmod 755, and started that.

In both cases, the terminal shows the app name and version (Sniffnet 1.5.0), the GUI window opens shortly for a split-second, with only dark background and no content, then I see "Abgebrochen (Speicherabzug geschrieben)" (= Core dumped).
Same for sniffnet from .deb and AppImage:

$ ../Sniffnet_LinuxAppImage_amd64.AppImage 

╭────────────────────────────────────────────────────────────────────╮
│                                                                    │
│                           Sniffnet 1.5.0                           │
│                                                                    │
│           → Website: https://sniffnet.net                          │
│           → GitHub:  https://github.com/GyulyVGC/sniffnet          │
│                                                                    │
╰────────────────────────────────────────────────────────────────────╯

Abgebrochen (Speicherabzug geschrieben)

How did you install the app?

downloaded one of the provided packages

Operating System

Linux

Additional context

No response

Activity

  1. benbucksch commented on Apr 17, 2026

    @benbucksch
    Author

    #1125 is similar. But unlike the error there, I have DISPLAY=":0" set in my environment.

    Of course, I am starting the app as normal user, not as root.

  2. GyulyVGC commented on Apr 17, 2026

    @GyulyVGC
    Owner

    Hey @benbucksch thanks for the report

    I think this has to do with the graphic library in use.

    Please try setting the environment variable ICED_BACKEND=tiny-skia and retry launching the DEB.

    This tells the app to use an alternative graphical renderer in case the default one doesn't work.

  3. added
    bugSomething isn't working
    rendererProblem related to the renderer used by the GUI library
    LinuxSomething related to Linux operating system
    on Apr 17, 2026
  4. benbucksch commented on Apr 17, 2026

    @benbucksch
    Author

    @GyulyVGC Thanks for the quick and meaningful reaction!

    Unfortunately, that still crashes:

    $ ICED_BACKEND=tiny-skia sniffnet 
    ...
    │                           Sniffnet 1.5.0                           │
    ...
    Abgebrochen (Speicherabzug geschrieben)
    

    (core dumped)

  5. GyulyVGC commented on Apr 17, 2026

    @GyulyVGC
    Owner

    Mm I see.

    Is this the only output you have in the terminal? If so, why do you say that this is similar to #1125?
    By the way, that one was already solved simply by setting the needed capabilities, as documented in the install instructions.

    However I believe they are different issues, but to be sure I need to understand if this is all the output you have.

  6. benbucksch commented on Apr 17, 2026

    @benbucksch
    Author

    Is this the only output you have in the terminal?

    Yes. Unfortunately.

    If so, why do you say that this is similar to #1125 ?

    Merely because both are crashes on startup. I agree that they are different bugs. I am used to ignorant triagers who would duplicate my bug to that one. I mentioned it only to prevent this one to be closed as dup and to highlight the differences.

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