X11 and "Cannot Open Display" errors Post: 302497930

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Operating Systems Solaris X11 and "Cannot Open Display" errors Post 302497930 by bluescreen on Friday 18th of February 2011 12:02:51 PM

02-18-2011

Registered User

X11 and "Cannot Open Display" errors

Greetings Forumers!

I'm posting a solution to an Issue I ran into this week: Getting applications to display on another through X11 and SSH. I have run into this issue many years ago and finally found my notes. Some of you may already know the answer to this issue but it took me a while to resolve it for myself.

Scenerio: both systems running Solaris 10u4 or greater, remote system=SPARC(M5000) and my workstation running x86(Ultra24).

I was merely trying to get xclock to display on my workstation from a remote system to test that x11 was working. I ran "xhost +remotehost" on my system before I started an ssh session to the remote system. I set the DISPLAY var and ran xclock. This failed repeatedly with "Cannot Open Display" errors. I tried changing the DISPLAY var with variations of "mysystem:0" and "mysystem:0.0" and "mysystem:1", etc., etc. Long story short: nothing worked.

The resolution that worked was to modify the "tcplisten" option in the "application/x11/x11-server" service on my system to "true":

Code:

mysystem# svccfg -s application/x11/x11-server
svc:/application/x11/x11-server> listprop options/*
options/default_depth        integer  24
options/server               astring  /usr/X11/bin/Xorg
options/server_args          astring
options/stability            astring  Evolving
options/value_authorization  astring  solaris.smf.manage.x11
options/tcp_listen           boolean  false
svc:/application/x11/x11-server> setprop options/tcp_listen=true
svc:/application/x11/x11-server> listprop options/*
options/default_depth        integer  24
options/server               astring  /usr/X11/bin/Xorg
options/server_args          astring
options/stability            astring  Evolving
options/value_authorization  astring  solaris.smf.manage.x11
options/tcp_listen           boolean  true
svc:/application/x11/x11-server> exit
mysystem#

After setting this I was able to get xclock to display on my system.

HTH

bluescreen

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macpack

macpack(Mono 1.0)														 macpack(Mono 1.0)

NAME

       macpack - Macintosh OS X Packager for managed gui assemblies

SYNOPSIS

       macpack [options] assembly

DESCRIPTION

       macpack	is a tool used to package managed assemblies (like System.Windows.Forms or Cocoa#) that require gui availability for deployment on
       Mac OS X.

       macpack will prepare a OS X compatible bundle from the provided assembly and resources.	The bundle will include the specified assembly	as
       well as any of the provided resources (specified with the -resource: switch).

       Developers  can	specify the kind of application to produce using the -mode: argument.  This controls how the environment in the Mono class
       libraries is setup.

OPTIONS

       -a assembly

       This option tells macpack where the managed assembly that you want to bundle resides.  This option is also  used  to  point  to	the  shell
       script to launch in the case of a X11/Gtk# application.

       This is the same as just passing the assembly as an argument.

       -m [winforms,x11,console,cocoa] or -mode:[winforms,x11,console,cocoa]

       A  value indicating the kind of application: WinForms is a Winforms application running on Quartz;  X11 is an application that requires the
       X11 server to run;  console is a non-graphical application;  cocoa is an application based on Cocoa#

       -n NAME or -appname:NAME

       This option specifies the application name of the emitted bundle.  This is what you will see in Finder.

       -o DIRECTORY or -output:DIRECTORY

       This option specifies the path to output the generated Application.

       -r RESOURCE or -resource:RESOURCE

       This option can be specified multiple times.  It will place a copy of each resource into the bundles resources  directory.   Alternatively,
       you can use a comma separated list of resources.

AUTHOR

       Geoff Norton

WEB SITE

       Visit: http://www.mono-project.com for details

																 macpack(Mono 1.0)