Date: Fri, 15 May 2009 15:13:48 -0400 From: Michael Powell <nightrecon@verizon.net> To: freebsd-questions@freebsd.org Subject: Re: root user, graphical programs Message-ID: <gukeqe$g7f$1@ger.gmane.org> References: <alpine.BSF.2.00.0905150843110.83166@macos.cmi.ua.ac.be>
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Pieter Donche wrote: > FreeBSD 7, KDE 3.5 > To install Matlab (in linux compat mode), one must execute the > matlab install program as root. The installer is graphical. > When from a KDE terminal window, I switch to root (# su -) > and try a graphical program, e.g. # xpdf, I get Can't open display. > The FreeBSD handbook (10.5.1) says in that case type setenv HOME ~USER > (USER the username where the su command was given). This doesn't help > I still get Can't open display. > > What's wrong and how to solve it? Since you're using KDE there is an easy way. Type kdesu xpdf at the prompt in a terminal (konsole for example) and it will pop up a box asking for the root password. This is the canonical method of starting graphical programs under KDE as root. It is the same mechanism as setting the property "Start as other user" to root when editing an icon's settings. The former is best suited for ad hoc impromptu one off situations, while the latter would be for making permanent changes to how clicking an icon behaves. -Mike
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