Re: [gentoo-user] Gtk-WARNING **: cannot open display:

Re: [gentoo-user] Gtk-WARNING **: cannot open display:

[Dirk Heinrichs]

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Am Mittwoch, 6. Juli 2005 05:07 schrieb ext W.Kenworthy:

> After an update (possibly pam related) a couple of weeks ago, I can no
> longer run so X apps under sudo (starting apps from a root logged in via
> su in an xterm work fine).

Can you check if $DISPLAY is set correctly after sudo? If not, look up 
env_keep, env_reset settings in /etc/sudoers. See man sudoers for details.

HTH...

	Dirk
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Re: [gentoo-user] Gtk-WARNING **: cannot open display:

[W.Kenworthy]

Thanks, thats the hint I needed.  "env_reset" was spoiling things.
Enabling the exception for the wheel group fixed it safely.

BillK

On Wed, 2005-07-06 at 08:00 +0200, Dirk Heinrichs wrote:
> Am Mittwoch, 6. Juli 2005 05:07 schrieb ext W.Kenworthy:
> 
> > After an update (possibly pam related) a couple of weeks ago, I can no
> > longer run so X apps under sudo (starting apps from a root logged in via
> > su in an xterm work fine).
> 
> Can you check if $DISPLAY is set correctly after sudo? If not, look up 
> env_keep, env_reset settings in /etc/sudoers. See man sudoers for details.
> 
> HTH...
> 
> 	Dirk

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Re: [gentoo-user] Gtk-WARNING **: cannot open display:

[Holly Bostick]

W.Kenworthy schreef:
> After an update (possibly pam related) a couple of weeks ago, I can no
> longer run so X apps under sudo (starting apps from a root logged in via
> su in an xterm work fine).  
> 
> In particular, I have some scripts using gtkdialog (which run as root)
> to ask "which network" for my laptop using a small gui before starting
> the correct network.  However, any attempt to open a dialog generates an
> error "(gtkdialog:18408): Gtk-WARNING **: cannot open display:"  xhost +
> doesnt help so its probably another PAM problem - can someone recommend
> where to look?
> 
> BillK
> 
> 

I had the same problem, but it was *not* PAM-related (I don't use PAM).
Found an answer on the forums (sorry, no link this time, maybe later)--
adding the following to sudoers (using visudo) worked for me:

# Allow users in group users to export specific variables
# Defaults:%users       env_keep=TZ
Defaults:%users         env_keep=DISPLAY

(the uncommented line is the additional line in question)

Hope this helps,
Holly
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