SUMMARY After upgrading my Fedora system, ksensors stopped working. Some investigation done in a Fedora bug (https://bugzilla.redhat.com/show_bug.cgi?id=1768193) figured out the underlying reason is that dcopserver doesn't start as long as XDG_RUNTIME_DIR, which it is by default. Since this appears to me to be an upstreams bug, I'm reporting it here. STEPS TO REPRODUCE 1. ksensors OBSERVED RESULT ICE Connection rejected! DCOPClient::attachInternal. Attach failed Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed ICE Connection rejected! DCOPClient::attachInternal. Attach failed Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed DCOPServer self-test failed. kdeinit: DCOPServer could not be started, aborting. EXPECTED RESULT A ksensors icon in the status field of the panel. SOFTWARE/OS VERSIONS I'm not sure where to find "About System", but this is on a Fedora 32 system with these RPMs: ksensors-0.7.3-45.fc32.x86_64 kdelibs3-3.5.10-103.fc32.x86_64 ADDITIONAL INFORMATION Running env -u XDG_RUNTIME_DIR ksensors seems to work as expected.
KDE upstream stopped supporting kdelibs3 years ago, there is no use reporting this here.
Sorry!