Unable to set prefs in 3.9.3 with jdk 21.0.9

[starbasessd]

Describe the bug
Error pop up trying to run ipscan 3.9.3 amd64 in Debian Trixie stating needs Java or openjdk 17+

To Reproduce
Steps to reproduce the behavior:
1 clean install debian trixie, updated and upgraded as of 30 Nov 2025
2 sudo apt install default-jdk
3 java -version
openjdk version "21.0.9" 2025-10-21
OpenJDK Runtime Environment (build 21.0.9+10-Debian-1deb13u1)
OpenJDK 64-Bit Server VM (build 21.0.9+10-Debian-1deb13u1, mixed mode, sharing)
4 sudo dpkg -i ipscan_3.9.3_amd64.deb
5 attempt gear, or Tools, preferences get pop up window need java/openjdk 17+

Expected behavior
To be able to make settings adjustments, ports scanned, etc

Screenshots
Will add if required

Versions (please copy from the About dialog or complete manually):

• Version of Angry IP Scanner 3.9.3 build date 2025/11/10
• OS, version, CPU architecture Debian Trixie, XFCE4, Ryzen 5 5500U
• Java version, vendor (java -version) - above
• Last working version of Angry IP Scanner unknown

Logs:

• Please run Angry IP Scanner from Terminal and see if any relevant logs were written. Paste them here:
  • Windows: jre\bin\java -jar ipscan.exe (inside of installation directory, e.g. C:\Program Files\Angry IP Scanner)
  • Mac: Angry\ IP\ Scanner.app/Contents/MacOS/ipscan
  • Linux: ipscan or java -jar ipscan.jar

hs_err_pid104161.log

[starbasessd]

I don't know what is going on, not sure if this is an appropriate fix, but an Arch linux suggestion to install ibus has at least temporarily 'fixed' it. Maybe have ipscan check for the ibus pkg as a dependency?

[warp4242]

Hi there,
same situation here:

• Fresh installed Debian Trixi (LMDE 7 - Linux Mint Debian Edition)

• JRE installed openjdk 25.0.1 2025-10-21 OpenJDK Runtime Environment (build 25.0.1+8-Debian-1deb13u1)
  OpenJDK 64-Bit Server VM (build 25.0.1+8-Debian-1deb13u1, mixed mode, sharing)

• try to open settings menue, Angry IP Scanner crashes, and a little window show me to install JRE 17.

• running from shell, it open the settings menue, but in the shell the following is shown:

(Angry IP Scanner:21015): Gdk-CRITICAL **: 20:53:22.042: gdk_window_get_screen: assertion 'GDK_IS_WINDOW (window)' failed

(Angry IP Scanner:21015): Gtk-CRITICAL **: 20:53:22.042: gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(Angry IP Scanner:21015): GLib-GObject-CRITICAL **: 20:53:22.042: invalid (NULL) pointer instance

(Angry IP Scanner:21015): GLib-GObject-CRITICAL **: 20:53:22.042: g_signal_handlers_disconnect_matched: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(Angry IP Scanner:21015): Gdk-CRITICAL **: 20:53:22.044: gdk_window_get_screen: assertion 'GDK_IS_WINDOW (window)' failed

(Angry IP Scanner:21015): Gtk-CRITICAL **: 20:53:22.044: gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed

(Angry IP Scanner:21015): GLib-GObject-CRITICAL **: 20:53:22.044: invalid (NULL) pointer instance

(Angry IP Scanner:21015): GLib-GObject-CRITICAL **: 20:53:22.044: g_signal_handlers_disconnect_matched: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

remark: an Upgrade from LMDE 6 with an installed Version of Angry IP Scanner to LMDE 7 => it works.

regards
Hardy