On 02/20/2011 02:13 PM, Mag. Dr. Nikolaus Klepp wrote:
> $ ls /var/log/Xorg.*
>    
# ls -ltr /var/log/Xorg.*
-rwxrwxrwx 1 root root 25688 Feb  3 16:12 /var/log/Xorg.21.log
-rw-r--r-- 1 root root 24775 Feb  3 17:03 /var/log/Xorg.22.log
-rw-r--r-- 1 root root 24774 Feb  3 17:35 /var/log/Xorg.3.log
-rw-r--r-- 1 root root 23678 Feb 17 20:57 /var/log/Xorg.2.log
-rw-r--r-- 1 root root 14162 Feb 18 06:38 /var/log/Xorg.20.log
-rw-r--r-- 1 root root 19772 Feb 18 11:18 /var/log/Xorg.0.log.old
-rw-r--r-- 1 root root 19524 Feb 20 08:03 /var/log/Xorg.1.log.old
-rw-r--r-- 1 root root 21107 Feb 20 13:52 /var/log/Xorg.0.log
-rw-r--r-- 1 root root 15105 Feb 20 13:55 /var/log/Xorg.1.log

> This should give some files Xorg.<a number>.log, where<a number>  is the
> display id. that's the thing you pass to synaptic:
>
> # DISPLAY=:<a number>  synaptic
>    
# DISPLAY=:0 synaptic
Invalid MIT-MAGIC-COOKIE-1 key
(synaptic:10481): Gtk-WARNING **: cannot open display: :0

# DISPLAY=:1 synaptic
Invalid MIT-MAGIC-COOKIE-1 key
(synaptic:12454): Gtk-WARNING **: cannot open display: :1
# DISPLAY=:2 synaptic

(synaptic:12462): Gtk-WARNING **: cannot open display: :2

-- 
Paul Cartwright