Clicking the debug button usually results in a popup message: “Request 2 cancelled on connection close”, I did add the json file to the sketch directory.
I did see the gdb-server tab once showing:
Waiting for gdb server to start…[2024-12-20T11:29:47.061Z] SERVER CONSOLE DEBUG: onBackendConnect: gdb-server session connected. You can switch to “DEBUG CONSOLE” to see GDB interactions.
/home/rikus/.arduino15/packages/SiliconLabs/tools/openocd/0.12.0-arduino1-static/bin/openocd -c “gdb_port 50000” -c “tcl_port 50001” -c “telnet_port 50002” -s /home/rikus/Arduino/fan/mg24_test -f /home/rikus/Arduino/arduino-ide_nightly-20241212_Linux_64bit/resources/app/plugins/cortex-debug/extension/support/openocd-helpers.tcl -f interface/cmsis-dap.cfg -f target/efm32s2_g23.cfg
[2024-12-20T11:29:47.121Z] SERVER CONSOLE DEBUG: onBackendConnect: gdb-server session closed
GDB server session ended. This terminal will be reused, waiting for next session to start…