I just installed on a brand new machine the TeXlive 2017 using Enrico Gregorio's guide.
Everything is fine except for the fact that when I launch the tlmgr I get the following error:
afcuttin@millenium-falcon:~/idic-comml$ sutlmgr
Loading local TeX Live database
(/usr/local/texlive/2017/tlpkg/texlive.tlpdb)
This may take some time, please be patient ...
bad pad value "2m": must be positive screen distance at
/usr/lib/x86_64-linux-gnu/perl5/5.22/Tk/Widget.pm line 1218.
at /usr/local/texlive/2017/texmf-dist/scripts/texlive/tlmgrgui.pl line 295.
Compilation failed in require at /opt/texbin/tlmgr line 4724.
the command sutlmg is just an alias for sudo /opt/texbin/tlmgr -gui as per the installation guide.
Unfortunately it seems that Google is not my friend at finding a solution to this error.