Can't open display: 0:0

Question

Hi board,
I got SGD EE 4.0 running on a debian sarge. Ok. ok.. I know that debian is
not supported - but with some assistance I maneged to get SGD 3.? working
on debian too.
As this assistance is no more available for me I hope to find some help
here.
Starting the SGD is no prob and also the login via browser from a client
is working fine. But neither array- nor objectmanager can be strated as
there's an error when opening Display 0.0
Unfortunatly my linux know how is quite poor so I've no idea what to
check. Has anybody some ideas where to loo and what to to to make it work?
cheers,

Answer 1

Hi,
you should check, whether the range of virtual
X display, used both by ssh and tarantells
intersects. By default, both are using the
range :10, :11, ...
Then you are using local (to the tta server) X
Apps via ssh (typical such apps. are object and
array manger), this can rise a confict.
The solution, in this case, is to change
the default range. For ssh: edit (e.g.)
/etc/shhd/sshd_config and set
X11DisplayOffset 200
Don't forget to send the master sshd daemon
a SIGHUP, that notic the sshd to reread it's
config file...
regards,
Tankred
Mat wrote:
Hi Carmelo,
nice idea - but it didn't work :-(
drwxrwxrwx 2 root root 4096 Aug 2 19:26 .
drwxrwxrwt 10 root root 4096 Aug 2 19:27 ..
srwxrwxrwx 1 ttasys ttaserv 0 Aug 2 19:26 X10
is my output - (the root line is missing... is that a/the prob?)
or any other idea... the logs I found are not very usefull :-(
cheers,
Carmelo wrote:
Mat,
Try the following
chang the permissions on the /tmp/.X11-unix directory from 775 to 777.
This allowed the ttasys user to create the unix socket in the directory.
~> ls -la /tmp/.X11-unix
total 48
drwxrwxrwx 2 root root 236 Jul 13 10:39 ./
drwxrwxrwt 25 root sys 9072 Jul 13 10:40 ../
srwxrwxrwx 1 root root 0 Jul 13 09:56 X0=
srwxrwxrwx 1 ttasys ttaserv 0 Jul 13 10:39 X10=
let me know if that works.
Thanks,
Mat wrote:
Rob wrote:
Mat wrote:
Hi board,
I got SGD EE 4.0 running on a debian sarge. Ok. ok.. I know that debian
is
not supported - but with some assistance I maneged to get SGD 3.?working
on debian too.
As this assistance is no more available for me I hope to find some help
here.
Starting the SGD is no prob and also the login via browser from a client
is working fine. But neither array- nor objectmanager can be strated as
there's an error when opening Display 0.0
Unfortunatly my linux know how is quite poor so I've no idea what to
check. Has anybody some ideas where to loo and what to to to make itwork?
>>>>>
cheers,
Are you in the position to tell us if the application you want to run is
accessed using either TELNET or SSH ?
What about character applications ? Do they work fine ?
If the problems are only noticeable for graph apps, please point your
browser at the following URL:
http://www.tarantella.com/support/documentation/sgd/ee/4.1/help/en-us/base/indepth/ssh.html
>>>
>>>
Best,
RobHi Rob,
the app I would start is the array manager :-( (or also the objectmanager)
>>>
I can ssh my machine and have also XForwarding on yes.
The output when starting an xapp is:
Starting...
Locating session...
..found session
Connecting to session...
Initialising ...
Logging in to the application server...
[email protected]'s password:
Last login: Mon Aug 1 20:17:17 2005 from sophie.xxx.de
sophie:~# exec /bin/sh
sophie:~# [ -f /bin/ksh ] && exec /bin/ksh
sophie:~# set o emacs ; set o gmacs ; set +o vi
sh: set: gmacs: invalid option name
sophie:~#
Configuring your environment...
LD_LIBRARY_PATH=/usr/lib; export LD_LIBRARY_PATH
sophie:~# ALTDISPLAY=sophie.xxx.de:11; export ALTDISPLAY
sophie:~# TTA_UID="`LANG=C LC_ALL=C id | sed
's/.*uid=\([0-9][0-9]*\).*/\1/'`"; export TTA_UID
sophie:~# find ${TMPDIR:-/tmp}/ -name "TTA_SESSION_TOKEN.$TTA_UID.*" -a !
-mtime 0 -exec rm -f {} ";" -o -type d -prune 2>/dev/null
sophie:~#
TTA_USERNAME='.../_ens/o=Tarantella System Objects/cn=Administrator';
export TTA_USERNAME
sophie:~#
TTA_SESSION_TOKEN="${TMPDIR:-/tmp}/TTA_SESSION_TOKEN.$TTA_UID.$$"; export
TTA_SESSION_TOKEN
sophie:~#
( umask 177; echo '.../_token/"vPchu2G3YtpCFALA+qSxFAO/XQk="' >
"$TTA_SESSION_TOKEN" )
sophie:~#
TTA_PRIMARY_DNSNAME='sophie.xxx.de'; export TTA_PRIMARY_DNSNAME
sophie:~#
TTA_PE_ID=''; export TTA_PE_ID
sophie:~# TTA_CLIENT_IPADDR='192.168.xxx.xx'; export TTA_CLIENT_IPADDR
sophie:~#
TERM=''; export TERM
sophie:~# TTA_PEERDNSNAME='sophie.xxx.de'; export TTA_PEERDNSNAME
sophie:~#
TTA_EXTDNSNAME='sophie.xxx.de'; export TTA_EXTDNSNAME
sophie:~# if [ -f /etc/ttaprinter.conf ]; then . /etc/ttaprinter.conf;
export LPDEST; fi
sophie:~#
Starting the application...
..connected
STATE_PROTOCOL_INIT
Connecting to server...
Connected
Initializing session...
Starting session...
Waiting for application...
Logging application output
./.././bin/bin/ttaxset: unable to open display ""
Exception in thread "main" java.lang.InternalError: Can't connect to X11
window server using ':0.0' as the value of the DISPLAY variable.
     at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
     at
sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:134)
     at java.lang.Class.forName0(Native Method)
     at java.lang.Class.forName(Class.java:141)
     at
java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:62)
     at java.awt.Window.init(Window.java:231)
     at java.awt.Window.<init>(Window.java:275)
     at java.awt.Frame.<init>(Frame.java:401)
     at java.awt.Frame.<init>(Frame.java:366)
     at javax.swing.JFrame.<init>(JFrame.java:154)
     at
com.sco.tta.admin.gui.RunAdminGui$AdminFrame.<init>(RunAdminGui.java:260)
     at com.sco.tta.admin.gui.RunAdminGui.<clinit>(RunAdminGui.java:68)
Connection to sophie.xxx.de closed.
Some things I noticed:
ALTDISPLAY=sophie.xxx.de:11; export ALTDISPLAY
is set on :11 - but later the message is open :0.0 what does thatmean?
>>>
hope you can help me....
(PS: I also noticed that client IP is set on the IP from my proxy
server... I changed but that has no effect... as expected)