Lucélio Gomes de Freitas wrote:
I open systemsetting to change timezone to (GMT-3), and after
"apply", I get the error on KDE control module, "Not possible to
execute/authenticate the accion: 6", and timezone is updated. After
the restart of the system, my timezone setting is wrong again, and get
to the previous(GMT).
Sounds like SELinux being a PITA, try disabling SELinux.