The file in which you try to stop seems to be without debug info.
In menu project > project options, page: debugger
Set "generate debug info for gdb"
and "type of debug info" to "dwarf with sets"
Is the file in question part of your main project? Or is it in a package?
If it is in a package, then you must do above steps for the package too. Open the package, and look at the options of the package.
Check
http://wiki.lazarus.freepascal.org/Debugger_Setupfor further settings that you may have to correct
The 2 green bars (pause) mean the breakpoint is "on hold". It was not yet possible to set it.
In your case, this likely means it will not be set at all (until you fix the options).
Applications with libraries/dll can have such breakpoints, which will become active when the dll is loaded.