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 Post subject: Can't get VNC to work
PostPosted: Sat Aug 11, 2007 9:52 am 
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Joined: Sun Dec 04, 2005 1:44 pm
Posts: 403
Location: Central NJ
I cannot connect to my myth box using vnc. I'm using tightvnc and I type in the IP address of myth, hit OK, and nothing happens.

Yes, my /home/mythtv/.fluxbox/apps has the following line in it:

Code:
[startup] {/usr/bin/x11vnc -nap -wait 50 -passwd mythtv -display :0 -forever -o /var/log/x11vnc.log -bg}


If I just try to execute /usr/bin/x11vnc, I get the following response:

Code:

###############################################################
#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#
#@                                                           @#
#@  **  WARNING  **  WARNING  **  WARNING  **  WARNING  **   @#
#@                                                           @#
#@        YOU ARE RUNNING X11VNC WITHOUT A PASSWORD!!        @#
#@                                                           @#
#@  This means anyone with network access to this computer   @#
#@  will be able to view and control your desktop.           @#
#@                                                           @#
#@ >>> If you did not mean to do this Press CTRL-C now!! <<< @#
#@                                                           @#
#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#
#@  You can also use the -passwdfile or -passwd options.     @#
#@  (note -passwd is unsafe if local users are not trusted)  @#
#@                                                           @#
#@  Make sure any -rfbauth and -passwdfile password files    @#
#@  cannot be read by untrusted users.                       @#
#@                                                           @#
#@  Use x11vnc -usepw to automatically use your              @#
#@  ~/.vnc/passwd or ~/.vnc/passwdfile password files.       @#
#@  (and prompt you to create ~/.vnc/passwd if neither       @#
#@  file exists.)  Under -usepw, x11vnc will exit if it      @#
#@  cannot find a password to use.                           @#
#@                                                           @#
#@                                                           @#
#@  Even with a password, the subsequent VNC traffic is      @#
#@  sent in the clear.  Consider tunnelling via ssh(1):      @#
#@                                                           @#
#@    http://www.karlrunge.com/x11vnc/#tunnelling            @#
#@                                                           @#
#@  Or using the x11vnc SSL options: -ssl and -stunnel       @#
#@                                                           @#
#@  Please Read the documention for more info about          @#
#@  passwords, security, and encryption.                     @#
#@                                                           @#
#@    http://www.karlrunge.com/x11vnc/#faq-passwd            @#
#@                                                           @#
#@  To disable this warning use the -nopw option, or put     @#
#@  the setting in your ~/.x11vncrc file.                    @#
#@                                                           @#
#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#
###############################################################

Settings:
 display:    null
 authfile:   null
 subwin:     0x0
 -sid mode:  0
 clip:       null
 flashcmap:  0
 shiftcmap:  0
 force_idx:  0
 cmap8to24:  0
 8to24_opts: null
 24to32:     0
 visual:     null
 overlay:    0
 ovl_cursor: 1
 scaling:    0 1.0000
 viewonly:   0
 shared:     0
 conn_once:  1
 timeout:    0
 inetd:      0
 filexfer:   1
 http:       0
 connect:    null
 connectfile null
 vnc_conn:   1
 allow:      null
 input:      null
 passfile:   null
 unixpw:     0
 unixpw_lst: null
 stunnel:    0
 accept:     null
 accept:     null
 gone:       null
 users:      null
 using_shm:  1
 flipbytes:  0
 onetile:    0
 solid:      null
 blackout:   null
 xinerama:   1
 xtrap:      0
 xrandr:     0
 xrandrmode: null
 padgeom:    null
 logfile:    null
 logappend:  0
 flag:       null
 rc_file:    ""
 norc:       0
 dbg:        0
 bg:         0
 mod_tweak:  1
 isolevel3:  0
 xkb:        0
 skipkeys:   null
 sloppykeys: 0
 skip_dups:  0
 addkeysyms: 1
 xkbcompat:  0
 clearmods:  0
 remap:      null
 norepeat:   1
 norepeatcnt:2
 nofb:       0
 watchbell:  1
 watchsel:   1
 watchprim:  1
 seldir:     null
 cursor:     1
 multicurs:  0
 curs_mode:  null
 arrow:      1
 xfixes:     1
 alphacut:   240
 alphafrac:  0.33
 alpharemove:0
 alphablend: 1
 cursorshape:1
 cursorpos:  1
 xwarpptr:   0
 buttonmap:  null
 dragging:   1
 wireframe:  0xff,3,0,32+8+8+8,all,0.15+0.30+5.0+0.125
 wirecopy:   always
 scrollcopy: always
  scr_area:  60000
  scr_skip:  ##Soffice.bin,##StarOffice
  scr_inc:   ##Nomatch
  scr_keys:  null
  scr_term:  null
  scr_keyrep: null
  scr_parms: 0+64+32+32,0.02+0.10+0.9,0.03+0.06+0.5+0.1+5.0
 fixscreen:  null
 noxrecord:  0
 grabbuster: 0
 ptr_mode:   2
 inputskip:  10
 speeds:     null
 wmdt:       null
 debug_ptr:  0
 debug_key:  0
 defer:      30
 waitms:     30
 wait_ui:    2.00
 nowait_bog: 0
 slow_fb:    0.00
 readtimeout: 20
 take_naps:  1
 sb:         60
 fbpm:       1
 xdamage:    1
  xd_area:   20000
  xd_mem:    1.000
 sigpipe:    null
 threads:    0
 fs_frac:    0.75
 gaps_fill:  4
 grow_fill:  3
 tile_fuzz:  2
 snapfb:     0
 rawfb:      null
 pipeinput:  null
 gui:        0
 gui_mode:   null
 noremote:   0
 unsafe:     0
 privremote: 0
 safer:      0
 nocmds:     0
 deny_all:   0
 pid:        4580

11/08/2007 11:56:41 x11vnc version: 0.8.2 lastmod: 2006-07-12
11/08/2007 11:56:41
11/08/2007 11:56:41 *** XOpenDisplay failed. No -display or DISPLAY.
11/08/2007 11:56:41 *** Trying ":0" in 4 seconds.  Press Ctrl-C to abort.
11/08/2007 11:56:41 *** 1 2 3 4
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

11/08/2007 11:56:45

11/08/2007 11:56:45 ***************************************
11/08/2007 11:56:45 *** XOpenDisplay failed (:0)

*** x11vnc was unable to open the X DISPLAY: ":0", it cannot continue.
*** There may be "Xlib:" error messages above with details about the failure.

Some tips and guidelines:

 * An X server (the one you wish to view) must be running before x11vnc is
   started: x11vnc does not start the X server.

 * You must use -display <disp>, -OR- set and export your DISPLAY
   environment variable to refer to the display of the desired X server.
 - Usually the display is simply ":0" (in fact x11vnc uses this if you forget
   to specify it), but in some multi-user situations it could be ":1", ":2",
   or even ":137".  Ask your administrator or a guru if you are having
   difficulty determining what your X DISPLAY is.

 * Next, you need to have sufficient permissions (Xauthority)
   to connect to the X DISPLAY.   Here are some Tips:

 - Often, you just need to run x11vnc as the user logged into the X session.
   So make sure to be that user when you type x11vnc.
 - Being root is usually not enough because the incorrect MIT-MAGIC-COOKIE
   file will be accessed.  The cookie file contains the secret key that
   allows x11vnc to connect to the desired X DISPLAY.
 - You can explicity indicate which MIT-MAGIC-COOKIE file should be used
   by the -auth option, e.g.:
       x11vnc -auth /home/someuser/.Xauthority -display :0
       x11vnc -auth /tmp/.gdmzndVlR -display :0
   you must have read permission for the auth file.

 - If NO ONE is logged into an X session yet, but there is a greeter login
   program like "gdm", "kdm", "xdm", or "dtlogin" running, you will need
   to find and use the raw display manager MIT-MAGIC-COOKIE file.
   Some examples for various display managers:

     gdm:     -auth /var/gdm/:0.Xauth
     kdm:     -auth /var/lib/kdm/A:0-crWk72
     xdm:     -auth /var/lib/xdm/authdir/authfiles/A:0-XQvaJk
     dtlogin: -auth /var/dt/A:0-UgaaXa

   Only root will have read permission for the file, and so x11vnc must be run
   as root.  The random characters in the filenames will of course change,
   and the directory the cookie file resides in may also be system dependent.
   Sometimes the command "ps wwaux | grep auth" can reveal the file location.

See also: http://www.karlrunge.com/x11vnc/#faq
root@mythtv:/usr/bin#

[/code]

_________________
Currently running: R5.5, HD5000 x 2, PVR150, Athlon 64 3000+, Chaintech VNF4, 1GB RAM, 2 x 250GB in LVM, MSI NX6200TC -> AA 9A60 -> HDTV


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 Post subject:
PostPosted: Sat Aug 11, 2007 11:21 am 
Offline
Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
Did you read the R5F1 hints and follow the links provided there?


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 Post subject:
PostPosted: Sun Aug 12, 2007 1:45 pm 
Offline
Joined: Thu Feb 12, 2004 2:54 pm
Posts: 392
Location: Beaumont, CA
try manually typing in the entire line used by the /.fluxbox/apps script rather than just x11vnc. It isn't finding a config files so it needs extra command line options added to the end.

_________________
ASUS A7N266 Micro-ATX Motherboard
Athlon 2200 processor
512K Kingston PC2100 Memory
MicroAtx Case
2 PVR250's w/remote
eVGA e-GeForce mx4000 (64 Ram with Tv/Out (Svideo))
Lite-on DVD cd-rw combo
120 GB Western Digital


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PostPosted: Fri Aug 15, 2008 8:19 am 
Offline
Joined: Fri Oct 07, 2005 7:18 am
Posts: 77
Location: Dallas, TX
I am using RealVNC viewer 4 and when I try to connect to my server I get
Code:
unable to connect to host: Connection refused (10061)
I have the correct line in my apps file.
Code:
[startup] {/usr/bin/x11vnc -nap -wait 50 -passwd mythtv -display :0 -forever -o /var/log/x11vnc.log -bg}
I have followed the WIKI suggestions with no results. Any suggestions?


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 Post subject:
PostPosted: Fri Aug 15, 2008 12:42 pm 
Offline
Joined: Wed Dec 10, 2003 8:31 pm
Posts: 1996
Location: /dev/null
@whoa - but is it running?

Code:
$ ps aux | grep vnc
mythtv    3468  0.0  0.4  14380  4168 ?        Ss   14:41   0:00 /usr/bin/x11vnc -nap -wait 50                -display :0 -forever -o /var/log/x11vnc.log -bg
mythtv    3476  0.0  0.0   1776   548 ttyp0    S+   14:41   0:00 grep vnc


You should see it if it's running via that command. This happened to mine not too long ago. It wasn't running and the log file wasn't getting generated. I ended up running the backup script, then auto upgrading/restoring to fix it. I dunno what the deal was.

_________________
Retired KM user (R4 - R6.04); friend to LH users.


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 Post subject:
PostPosted: Fri Aug 15, 2008 8:10 pm 
Offline
Joined: Fri Oct 07, 2005 7:18 am
Posts: 77
Location: Dallas, TX
Apparently its not running :(
Code:
ps aux | grep vnc
root      7353  0.0  0.0   1776   540 ttyp0    S+   21:47   0:00 grep vnc
Looking at the VNC logfile it appears that X is not happy about something:
Code:
15/08/2008 10:12:41 passing arg to libvncserver: -passwd

Settings:
 display:    :0
 authfile:   null
 subwin:     0x0
 -sid mode:  0
 clip:       null
 flashcmap:  0
 shiftcmap:  0
 force_idx:  0
 cmap8to24:  0
 8to24_opts: null
 24to32:     0
 visual:     null
 overlay:    0
 ovl_cursor: 1
 scaling:    0 1.0000
 viewonly:   0
 shared:     0
 conn_once:  0
 timeout:    0
 inetd:      0
 filexfer:   1
 http:       0
 connect:    null
 connectfile null
 vnc_conn:   1
 allow:      null
 input:      null
 passfile:   null
 unixpw:     0
 unixpw_lst: null
 stunnel:    0
 accept:     null
 accept:     null
 gone:       null
 users:      null
 using_shm:  1
 flipbytes:  0
 onetile:    0
 solid:      null
 blackout:   null
 xinerama:   1
 xtrap:      0
 xrandr:     0
 xrandrmode: null
 padgeom:    null
 logfile:    /var/log/x11vnc.log
 logappend:  0
 flag:       null
 rc_file:    ""
 norc:       0
 dbg:        0
 bg:         1
 mod_tweak:  1
 isolevel3:  0
 xkb:        0
 skipkeys:   null
 sloppykeys: 0
 skip_dups:  0
 addkeysyms: 1
 xkbcompat:  0
 clearmods:  0
 remap:      null
 norepeat:   1
 norepeatcnt:2
 nofb:       0
 watchbell:  1
 watchsel:   1
 watchprim:  1
 seldir:     null
 cursor:     1
 multicurs:  0
 curs_mode:  null
 arrow:      1
 xfixes:     1
 alphacut:   240
 alphafrac:  0.33
 alpharemove:0
 alphablend: 1
 cursorshape:1
 cursorpos:  1
 xwarpptr:   0
 buttonmap:  null
 dragging:   1
 wireframe:  0xff,3,0,32+8+8+8,all,0.15+0.30+5.0+0.125
 wirecopy:   always
 scrollcopy: always
  scr_area:  60000
  scr_skip:  ##Soffice.bin,##StarOffice
  scr_inc:   ##Nomatch
  scr_keys:  null
  scr_term:  null
  scr_keyrep: null
  scr_parms: 0+64+32+32,0.02+0.10+0.9,0.03+0.06+0.5+0.1+5.0
 fixscreen:  null
 noxrecord:  0
 grabbuster: 0
 ptr_mode:   2
 inputskip:  10
 speeds:     null
 wmdt:       null
 debug_ptr:  0
 debug_key:  0
 defer:      30
 waitms:     50
 wait_ui:    2.00
 nowait_bog: 0
 slow_fb:    0.00
 readtimeout: 20
 take_naps:  1
 sb:         60
 fbpm:       1
 xdamage:    1
  xd_area:   20000
  xd_mem:    1.000
 sigpipe:    null
 threads:    0
 fs_frac:    0.75
 gaps_fill:  4
 grow_fill:  3
 tile_fuzz:  2
 snapfb:     0
 rawfb:      null
 pipeinput:  null
 gui:        0
 gui_mode:   null
 noremote:   0
 unsafe:     0
 privremote: 0
 safer:      0
 nocmds:     0
 deny_all:   0
 pid:        1721

15/08/2008 10:12:41 x11vnc version: 0.8.2 lastmod: 2006-07-12
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified


15/08/2008 10:12:41 ***************************************
15/08/2008 10:12:41 *** XOpenDisplay failed (:0)

*** x11vnc was unable to open the X DISPLAY: ":0", it cannot continue.
*** There may be "Xlib:" error messages above with details about the failure.

Some tips and guidelines:

 * An X server (the one you wish to view) must be running before x11vnc is
   started: x11vnc does not start the X server.

 * You must use -display <disp>, -OR- set and export your DISPLAY
   environment variable to refer to the display of the desired X server.
  GNU nano 2.0.2                       File: /var/log/x11vnc.log                                                     

 - Usually the display is simply ":0" (in fact x11vnc uses this if you forget
   to specify it), but in some multi-user situations it could be ":1", ":2",
   or even ":137".  Ask your administrator or a guru if you are having
   difficulty determining what your X DISPLAY is.

 * Next, you need to have sufficient permissions (Xauthority)
   to connect to the X DISPLAY.   Here are some Tips:

 - Often, you just need to run x11vnc as the user logged into the X session.
   So make sure to be that user when you type x11vnc.
 - Being root is usually not enough because the incorrect MIT-MAGIC-COOKIE
   file will be accessed.  The cookie file contains the secret key that
   allows x11vnc to connect to the desired X DISPLAY.
 - You can explicity indicate which MIT-MAGIC-COOKIE file should be used
   by the -auth option, e.g.:
       x11vnc -auth /home/someuser/.Xauthority -display :0
       x11vnc -auth /tmp/.gdmzndVlR -display :0
   you must have read permission for the auth file.

 - If NO ONE is logged into an X session yet, but there is a greeter login
   program like "gdm", "kdm", "xdm", or "dtlogin" running, you will need
   to find and use the raw display manager MIT-MAGIC-COOKIE file.
   Some examples for various display managers:

     gdm:     -auth /var/gdm/:0.Xauth
     kdm:     -auth /var/lib/kdm/A:0-crWk72
     xdm:     -auth /var/lib/xdm/authdir/authfiles/A:0-XQvaJk
     dtlogin: -auth /var/dt/A:0-UgaaXa

   Only root will have read permission for the file, and so x11vnc must be run
   as root.  The random characters in the filenames will of course change,
   and the directory the cookie file resides in may also be system dependent.
   Sometimes the command "ps wwaux | grep auth" can reveal the file location.

See also: http://www.karlrunge.com/x11vnc/#faq
This part is what looks to be the issue
Code:
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified


15/08/2008 10:12:41 ***************************************
15/08/2008 10:12:41 *** XOpenDisplay failed (:0)

*** x11vnc was unable to open the X DISPLAY: ":0", it cannot continue.
*** There may be "Xlib:" error messages above with details about the failure.
I'm just not sure how to do a lot of what the suggestions direct me to do. If anyone has specific code for me to try I'd be very appreciative.


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 Post subject:
PostPosted: Sat Aug 16, 2008 8:24 am 
Offline
Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
Sounds like an xhost or xauth problem. This is covered in the x11vncHowTo page on the wiki. You really should have discovered the wiki by now, since these are the x11vnc directions that the R5.5 Hints point you to...


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 Post subject:
PostPosted: Tue Aug 19, 2008 9:14 pm 
Offline
Joined: Fri Oct 07, 2005 7:18 am
Posts: 77
Location: Dallas, TX
tjc - I have used the wiki on several occasions. In fact I had gone over that particular article on vnc several times. I tried the option "-allow 10.10.1.52" but nothing worked. I recently rebooted the backend server for different reasons but apparently with that option and the reboot I now have vnc access. Thanks for the help.


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