LinHES R6 (Not included with R6, must be installed via pacman) As root user, follow prompts

pacman -Sy x11vnc

nano /home/mythtv/.fluxbox/apps

-- Add, Replacing XXXXX with desired password

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

touch /var/log/x11vnc.log 

chmod 766 /var/log/x11vnc.log

Restart X

pkill xinit

or

Ctrl+Alt+Backspace

http://mysettopbox.tv/phpBB2/viewtopic.php?t=20033 http://mysettopbox.tv/phpBB2/viewtopic.php?t=19595 http://mysettopbox.tv/phpBB2/viewtopic.php?t=19602

The following was tested on R5E50 & works in R5F1 and R5.5

VNC setup has already been taken care of. It may be automatically started when your machine boots. The code to cause its startup is in

/home/mythtv/.fluxbox/apps

There should be an entry that says:

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

If it begins with a '#' then it will be ignored, to enable it remove the #.

If it isn't there at all, for some reason, it can be added by running the

restore_fixups.sh

script.

After making a change calling

pkill X11

will restart X and cause the new settings to be read.

I would recommend changing the password to something other then mythtv, just change mythtv to the password of your choice located after the -passwd.

Copied from this post mysettopbox.tv/phpBB2/viewtopic.php?t=13188

A viewer is needed to connect to the vnc server that is now running on your Knoppmyth box. This can be a program installed on the client machine or a java program running within the client machines web browser.

built-in viewer

x11vnc can optionally provide a java viewer embedded in a web page. This has the advantage of not needing to setup or install any software, other than a web browser with java support, on the client machine.

To setup the viewer install vnc-java:

sudo apt-get install vnc-java 

Add to the start up line -httpdir /usr/share/vnc-java making the line in apps

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

Restart X:

pkill X11

The viewer will then be available on port 5800; e.g. if the ip address of the machine running knoppmyth was 1.1.1.1 then pointing a web browser at

http://1.1.1.1:5800

would display the vnc client.

separate viewer

Download a VNC viewer, such as: real vnc or tight vnc

Install it, launch it, enter the IP address of your Knoppmyth box and port 5900 (if asked) and click CONNECT or whatever the appropriate button is. Enter the VNC password (default is mythtv) and BOOM! Your Knoppmyth desktop will appear in your VNC viewer window!!! COOL!

Issue with Nvidia cards, MythTV and X11Vnc

It seems that on some machines using Nvidia cards, XVNC and opengl applications (such as MythTV) have issues: the screen stops updating via VNC. The server continues going on (the machine did not crash), but the VNC client does not receive updates anymore, forcing a disconnect/reconnect to get the next frame.

The fix for this issue is adding "-noxdamage" to the X11VNC command line in the the apps file and reboot. After the modification, you'd get a line similar to this:

/usr/bin/x11vnc -nap -wait 50 -noxdamage -passwd mythtv -display :0 -forever -o /var/log/x11vnc.log -bg

For more details, see the official FAQ entry about it: http://www.karlrunge.com/x11vnc/#faq-xdamage-opengl

On my build (R5F27, P3 866, Nvidia Gf4 MX 440) this fixed the issue: no more freezes afterwards! --Yop83

Installing and setting up X11VNC on an older KnoppMyth rev (<R5E50)

So many times I wanted to use MythFrontend to do configuration but couldn't because the TV was in use. I was searching for a way to remotely call the GUI. x11vnc fills the bill nicely (see the note below for R5B7). (R5D1 works fine with just this first description)

1. apt-get install x11vnc

2. nano /etc/gdm/PreSession/Default

Insert the following line after the PATH line where xxxx is the desired password:

/usr/bin/x11vnc -nap -wait 50 -passwd xxxx -display :0 -forever -o /var/log/x11vnc.log -bg

(Also, you can add -shared to let more than one person connect at a time)
(Also, you can add -allow 192.168.2. (notice that "period" at the end) which only allows connections from 192.168.2.xxx)

'Alternate line:'
/usr/bin/x11vnc -nap -wait 50 -passwd xxxx -display :0 -forever -o /var/log/x11vnc.log -bg -shared -allow 192.168.2.

Restart X-windows:

(or just enter in a xterm for temporary access)

3. Install one of the following clients on the remote machine:
www.uk.research.att.com/vnc/
www.realvnc.com/
www.tightvnc.com/

4. Open up the viewer on the remote machine and enter the ip or dns name of the mythbox

5. key in the password from the command line above.

At this point you should show the display from your mythbox.

Comment: Using Knoppmyth R4V5, logging in as root and adding the comment to /etc/gdm/PreSession/Default did not work for me. It came up with the error "connection to ":0.0" refused by server". I could not manual start x11vnc manually(as root), same error. I could start x11vnc logged in as "mythtv". Some kind of xaurthority issue that is beyond me. After manually starting x11vnc (as Mythtv log in) I could see the mythtv screen from my windows box using Tightvnc Viewer. Thanks for the instructions.

Workarounds for this:

One method:

     if [ x"$removelist" != x ]; then
         <em class="highlight marker searchword-0">xauth</em> remove $removelist
     fi
     

Another method:

/usr/bin/x11vnc -nap -wait 50 -passwd xxxx -display :0 -forever -o /var/log/x11vnc.log -bg -auth /var/lib/gdm/:0.<em class="highlight marker searchword-0">Xauth</em>

===

This worked perfectly for me before I upgraded to Knopmyth 5A12.

Now I have to

• 1. apt-setup & choose the mirror closest to me.
• 2. apt-get update
• 3. apt-get install x11vnc

=== Question I want to access my mythbox remotely, which port does x11vnc listen on so I can forward it and were can I change the default?

Oops, RTFM

• rfbport port

TCP port for RFB protocol. The RFB protocol is used for commnunication between VNC server and clients.

===

=== Question Is there a way to view the X-session that the local user is currently viewing with VNC. For example, if my wife is having issues with the computer, can I login from work to see the X-session she is viewing on the local computer? ===

Answer Absolutely, in fact, the whole page is the answer to your exact question! If you want another discrete desktop session, you have to use vncserver.

# apt-get install vncserver
# vncserver

You will require a password to access your desktops.

Password:
Verify:

It will launch another X session with VNC attached. ==

You can also add "/usr/bin/x11vnc &" /etc/gdm/Init/Default at the end, this always seems to work well, you can add your own arguments

==

For R5B7, the default apt configuration will install the unstable version of x11vnc, which requires updates of xserver-xorg. These updates broke the X configuration on my machine. A simple workaround is to install the stable version of x11vnc:

1. nano /etc/apt/sources.list

change "unstable" on the first line to "stable", save the file

2. apt-get update

3. apt-get install x11vnc

4. return apt configuration to its previous state:

nano /etc/apt/sources.list

change "stable" on the first line back to "unstable", save the file

apt-get update

==

For R5C7 you need to get & install vnc manually since /etc/apt/sources.list doesn't currently point to a vnc package:

wget http://debian.oregonstate.edu/debian/pool/main/libv/libvncserver/x11vnc_0.7-1_i386.deb
dpkg -i x11vnc_0.7-1_i386.deb

Then follow the configuration steps above.

==