I have noticed that when running gsch2pcb to convert a gEDA gschem schematic to a pcb layout that certain components that are properly connected in the schematic are unconnected in the PCB layout. In particular, transistors from the stock symbol library are affected but this has been seen for some other stock components too. (gschem version 126.96.36.19910115 - Ubuntu x64)
To demonstrate this I created a new schematic as below
Then checked the connections (using gnetlist -g drc2 demo.sch -o /dev/stdout) to ensure everything is connected up. All components have been assigned valid footprints.
pat@frog:/tmp/x$ gnetlist -g drc2 x.sch -o /dev/stdout Loading schematic [/tmp/x/x.sch] Checking non-numbered parts... Checking duplicated references... Checking nets with only one connection... Checking pins without the 'pintype' attribute... Checking type of pins connected to a net... Checking unconnected pins... Checking slots... Checking duplicated slots... Checking unused slots... No warnings found. No errors found.
This is then converted to a pcb layout using gsch2pcb and the netlist file loaded and we see the following ratsnest (I autoplaced the components as well):
So why is the NPN transistor being ignored? It is a standard gEDA symbol (npn-3.sym) and a standard footprint (TO92) from the PCB library. I both loaded the generated netlist file and executed the generated .cmd file and both these files list the pins on Q1. The netlist below has all 3 pins of Q1 connected to something.
pat@frog:/tmp/x$ cat x.net unnamed_net3 R3-2 LED1-2 unnamed_net2 LED1-1 Q1-C R2-1 +5V S1-2 R2-2 GND R3-1 Q1-E R1-1 unnamed_net1 Q1-B S1-1 R1-2