I followed TEST instructions in description I got exactly the same output
guiverc@dx6120lu:~$ sudo software-properties-qt QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root' QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root' Traceback (most recent call last): File "/usr/lib/python3/dist-pack ... [redacted ] ... has no attribute 'keyserver' (I saved my output & copy/pasted output from description then `diff -Zb` them & only difference was prompt & XDG_RUNTIME_DIR lines..) guiverc@dx6120lu:~$ apt-cache policy software-properties-qt software-properties-qt: Installed: 0.96.27 Candidate: 0.96.27 Version table: *** 0.96.27 500 500 http://ftp.iinet.net.au/pub/ubuntu cosmic/universe i386 Packages 100 /var/lib/dpkg/status // note: my arch is x86 i686 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1801439 Title: Unable to add PPA's via the software-properties To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1801439/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs