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{{MessageBox|backgroundcolor =#FBB|image = Using Warning.png|heading =WARNING|message = '''NOTE:''' This is for Fedora-based systems ONLY.<br />Guidance may not work for Amahi 7 or greater. Sorry, but if you break your HDA we cannot provide support}}{{NeedsUpdate}} ---- <div style="border: 1px solid #A3B1BF; padding: .8em 1em; background-color: #E6F2FF; margin: 0px 1em;">'''NOTE:''' The one-click [https://www.amahi.org/apps/vnc VNC to use App] has been discontinued for Amahi 7 or greater. The reason is that it pulls a remote lot of packages, including desktop and that breaks DNS in the HDA Fedora.</div><br /> :'''NOTE:''' See [[TigerVNC]] for Amahi 8/9 (Fedora 1221/23) guidance.__TOC__ =VNC remote =
Using [http://realvnc.com/ VNC] is useful if:
* You would like to use a GUI to configure printer(s) or have a scanner or other device that requires a desktop program to configure and the machine is headless
* A server
* A client
Download the client software and install:
* Windows: [http://realvnc.com RealVNC], [http://www.uvnc.com UltraVNC], [http://www.tightvnc.com TightVNC]
* MAC: [http://sourceforge.net/projects/chicken/ Chicken], [http://cotvnc.sourceforge.net/ Chicken of the VNC](do not use internal vnc client as there are some issues)* For Linux, you have the vncviewer package, available in most, if not all distros. For Fedora 12, do the following as [[Open_Terminal_as_root|'''root''' ]] user: yum -y install tigervnc = Server Installation = There are various ways to get the server going in your HDA. All of them require the server software.# Amahi [http://www.amahi.org/apps/VNC VNC] application.# Manually as described below (notes may require some revision). === Manual Install ===* Complete the steps in [[GUI_Install_for_Express_Disc|Express Disc Desktop]] guidance (Amahi 7 ONLY). * As root, install the server:
== Method 1 ==* To start Open a terminal, become root and install the VNC server (tigervnc-server ) as stated in your HDAthe Manual Install section. When the install has completed, press ctrl-D to end the root session. Leave the terminal open, or open one now. *The following commands are entered as '''User'''. * Type vncpasswd and press enter. The system will prompt you for a password. Type a password and press the enter key. The system will prompt you need install tigervnc-server rpm packageto verify the password. Type the password a second time and press the enter key. * Type vncserver and press the enter key. The system will create the configuration files. You should see output similar to this: xauth: creating new authority file /home/user/.xauthority New 'host.localdomain:1 (user)' desktop is host.localdomain:1 Creating default startup script /home/user/.vnc/xstartup Starting applications specified in /home/user/.xauthority Log file is /home/user/.vnc/host.localdomain:1.log
* From You can edit the '''root''' configuration files using your choice of editor. Nano is used below. Note that when "user" is shown, you need to enter your user name. * Type nano /home/user/.vnc/xstartup and press the enter key. Nano will open the file. Find the following line: yum twm & Change that line to read: exec gnome-y install tigervncsession & This change will open the VNC display with a Gnome desktop, even if the server is starting in Init 3 by default. Press ctrl-server xinetdX to exit Nano. You will see the prompt at the bottom "Save modified buffer (ANSWERING "No" WILL DESTROY CHANGES) ? chkconfig vncserver off Press the Y key. The prompt will change, showing you the file name. service vncserver stop Press the enter key, this will store your change and exit Nano.
* Create /etc/gdm/customThe following commands are entered as '''Root'''.conf file and add the following: #GDM configuration storage [xdmcp] Enable=true [chooser] [security] DisallowTCP=false [debug]
* Create /etc/xinetd.d/vnc1024 file Type su and add press the following (you can change the screen resolution enter key followed by changing the geometry setting): service vnc1024 { disable = no socket_type = stream protocol = tcp group = tty wait = no user = nobody server = /usr/bin/Xvnc server_args = -inetd -query localhost -geometry 1024×768 -depth 16 -once -fp /usr/share /X11/fonts/misc -securitytypes=none }root password
You can edit the configuration files using your choice of editor. Nano is used below.Note that when "username" is shown, you need to enter your user name. * Edit Type nano /etc/services sysconfig/vncservers and comment out press the two enter key. Nano will open the file. Find the following lines as listed below: '#' VNCSERVERS="1:username" '#vnc' VNCSERVERARGS[1]="-server 5900/geometry 800x600 -nolisten tcp # VNC Server #vnc-server 5900/udp # VNC Serverlocalhost"
* Uncomment both lines by removing the # at the beginning of the lines.
Edit the lines so they appear as follows:
VNCSERVERS="1:username"
VNCSERVERARGS[1]="-geometry 1024x768 -nolisten tcp"
Enter your username in place of "username". After "geometry", you can enter any resolution you desire. You can come back and change this if necessary.
Press ctrl-X to exit Nano. You will see the prompt at the bottom "Save modified buffer (ANSWERING "No" WILL DESTROY CHANGES) ?
Press the Y key. The prompt will change, showing you the file name.
Press the enter key, this will store your change and exit Nano.
* Add this line below Finally, type chkconfig vncserver on and press the two lines you commented out and save enter key. This will make the changes: vnc1024 5900/tcp # VNC and GDMserver start when the computer starts.
* Now restart Press ctrl-D to end the xinetd service service xinetd restartroot session, and then press ctrl-D again to close the terminal.
* That's it - Run your VNC Client and enter your HDA hda:1 as the host/IP address. You should now see your HDA Desktop login screen. *If you don't see the login screenare interested in more security for your VNC connection, a reboot of check the HDA may be required. This can be done via the dashboard or by executing the following as '''root''' user: reboot nowlink listed below under "General Instructions"
== Method 2 ==
* To start the server in your HDA, you need install tigervnc-server rpm package:
* From the '''root''' user:
yum -y install xinetd
chkconfig vncserver off
service vncserver stop
* Create /etc/gdm/custom.conf file and add the following:
#GDM configuration storage
[xdmcp]
Enable=true
[chooser]
[security]
DisallowTCP=false
[debug]
* Create /etc/xinetd.d/vnc1024 file and add the following (you can change the screen resolution by changing the geometry setting):
service vnc1024
{
disable = no
socket_type = stream
protocol = tcp
group = tty
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = -inetd -query localhost -geometry 1024×768 -depth 16 -once -fp /usr/share/X11/fonts/misc -securitytypes=none
}
* Edit /etc/services and comment out the two lines as listed below:
#vnc-server 5900/tcp # VNC Server
#vnc-server 5900/udp # VNC Server
* Add this line below the two lines you commented out and save the changes:
vnc1024 5900/tcp # VNC and GDM
* Now restart the xinetd service
service xinetd restart
* Run your VNC Client and enter your HDA IP address for host/IP address. You should now see your HDA Desktop login screen. If you don't see the login screen, a reboot of the HDA may be required. This can be done via the dashboard or by executing the following as '''root''' user:
reboot now
== Method 3 (the cpg method) == * From Every time the HDA is rebooted, when VNC is needed, ssh to the '''root''' userHDA* The first time without do: yum vncserver -y install tigervnc-servergeometry 1550x1100 chkconfig vncserver on* After the first time, I type vncs. I have an alias in ~/.bashrc: service alias vncs='vncserver start-geometry 1550x1100 &> /dev/null &';
Notes:
* Why that resolution? That fits my monitors with the VNC window and frame enough to not display scrollbars and move around nicely. Change at will!
* It does involve the dreaded CLI.
* Since my HDA does not get rebooted often, this is not a huge problem
This helpful page has helped with [http://www.windowsreference.com/internet-explorer/windows-has-blocked-this-software-because-it-cant-verify-the-publisher/ blocking VNC]
