I am running into an issue with fldigi and PTT performance. When I put fldigi into transmit there is a delay of a couple of seconds before it actually flips the serial bits.
I am using a Rigblaster Plus on com1/S0. This seems to be specific to Ubuntu/fldigi on this PC because it works as expected with XP/fldigi (and other pieces of software) on this same PC.
Any hints as to what to look at? There is not much to set for /dev/ttyS0 based PTT within fldigi.
73, John NG0R