I’m reading the thread. And I did fix it by re-installing with non-graphic install. The first time was a graphical install.
On Tue, Jan 28, 2020, at 06:54, Greg Wooledge wrote: > On Tue, Jan 28, 2020 at 04:33:21PM +1100, Keith Bainbridge wrote: > > So sudo is installed. > > > > What happens when you type > > > > su > > > > in a term? > > > > > > If you are asked for a password, type it in and enter. > > > > When there type > > > > usermod -a -G sudo charles - looks to be your user name > > > > exit > > > > Then try sudo again. You should get request for charles password. > > Charles would have to log out and log in again, to pick up the new > group membership. Or use something like "exec su - charles" in a > terminal to reset the session privileges in that one window only. > > Also, Debian can add an existing user to an existing group with > "adduser username groupname". See adduser(8). > > At this point, however, I think everyone's talking to a ghost. I > don't recall the OP *ever* showing us the command they typed and > the error message they got. They also claimed they "fixed" the > problem by "reinstalling". I doubt they're even reading this > thread. > > -- Harold Hartley 17632 N. 5th place Phoenix, AZ 85022 wheelie...@ownmail.net