New Modes FST4 and FST4W
WSJT-X 2.5.0 on Debian 11.1 (amd64) requires the installation of the following Debian SID packages:
WSJT-X 2.5.0 works without any problems now.
The latest general availability (GA) release WSJT-X 2.3.0 and the candidate release WSJT-X 2.4.0-rc1, when installed on the current Debian Testing (11) amd64 and i386, produce an error message with abortion: "Fatal Error: locale::facet::_S_create_c_locale name not valid". The reason why I have not yet found.
Both releases work out of the box on Lubuntu 20.04 LTS (amd64) and Lubuntu 18.04 LTS (i386).
To use the new modes FST4 and FST4W I tried to install wsjtx_2.3.0-rc1_i386.deb on a Medion notebook with i386-architecture. But it was very tricky for me to install this application under Debian 10 and so I upgraded to Debian Testing (Debian 11).
Then I downloaded and installed the packages
from https://debian.pkgs.org and https://packages.debian.org
and, of course, wsjtx_2.3.0-rc1_i386.deb from the WSJT homepage.
WSJT-X 2.3 rc1 works fine apart from episodic problems with the audio settings (USB audio device).
A test with another notebook (Dell, amd64-architecture, Debian 10 and Virtualbox with Windows 8.1) failed. The system load was too high and the audio, especially with an USB device, stuttered.
Here was the solution an upgrade to Debian Testing (Debian 11), too.
After downloading and installing libvpx5_1.7.0-3+deb10u1_amd64.deb and wsjtx_2.3.0-rc1_amd64.deb now I can use the modes FST4 and FST4W on the 630-m-band.
The update to wsjtx_2.3.0-rc2_i386.deb on the current Debian Testing (i386) required the installation of the packages