Check your libcw6 version. There was a fix in 3.5.1 for something similar. (see also http://unixcw.sourceforge.net/news.html )
73, Zoli On Sun, Aug 28, 2022 at 07:19:04PM +0000, Marcin SP6MI wrote: > It was Slackware, it doesn't have by default option to install tlf, it has to > be compiled and installed manually. > No during test in ubuntu, I've found that cwdaemon starts extending dah > signals and ends transmission with setting carrier. It's strange, not sure if > it's causes by interface drivers, or cwdaemon. > > Thanks > Br > Marcin >