Blank prompt when running the licensing wizard on CentOS
When entering a license key through the licensing wizard, you will be prompted to enter the sudo password to proceed. By default CentOS remembers sudo passwords for 5 minutes so, if you cancel out of the wizard for any reason and re-run it within the remember timeframe, you will not be prompted ...
- I'm experiencing keyboard problems on AIX
On some AIX systems, we have found that the /usr/dt/bin/Xsession script uses the xmodmap command to tamper with the keyboard layout, causing this kind of problem. Have a look at your ~/.vnc/xstartup file, or the system-wide /etc/vnc/xstartup file. If it runs /usr/dt/bin/Xsession first, you coul ...
- I'm receiving "libstdc" compatibility errors when trying to install VNC Server on a 64-bit computer
If you're installing VNC Server onto a 64-bit CentOS 5 (or similar) machine, you may receive compatibility errors relating to the libstdc libraries present on the computer. For CentOS 5 in particular, you will need to install the "compat-libstdc++-33" package (the final number may vary) You can ...
- When I connect to x0vncserver, the screen loads but then doesn't refresh anymore?
This is because the built in desktop compositing feature of certain Linux distributions (notably, Ubuntu 9.04) means that x0vncserver isn't detecting the updates that are taking place. To rectify this, set "Visual Effects" in "System > Preferences > Appearance" to 'None'.
- I'm having problems when running vncserver with "sudo" or "su".
A VNC Server session (like any other graphical application) should never be run with "sudo" (or even with "su"). To run any graphical program as root, it is generally safer to use "gksudo" (under GNOME) or "kdesudo" (under KDE). For VNC Server, it is better to run it from a root login shell. The ...
- I'm using x0vncserver, but the screen isn't updating correctly.
If you're experiencing problems with x0vncserver updating, i.e. after the initial connection, updates are not being sent, then this may be due to the XDamage extension. The XDamage extension doesn't currently work correctly with the NVidia proprietary display drivers. The issue has also been see ...
- I'm receiving the error "Error: could not run xauth".
This means that the xauth program was not found. This is needed to start a VNC desktop, but is often not on root's PATH. You will need to add the appropriate directory to Your PATH. When the software was installed, it will probably have flagged a warning that xauth was not on the PATH and indica ...
- How can I change the geometry of my desktop?
You can change the geometry of the remote X desktop by running the vncconfig with the following switch. vncconfig -geometry "Width x Height" Replace with your required screen resolution i.e 1024x768
- I'm receiving the error "could not open default font 'fixed'".
This error indicates that the default font path built in to Xvnc is not valid on your computer. You can find out the correct font path by running the following command while logged in to the console of your computer: xset q This will list information about your X Server, including the default ...
- How do I get Gnome/KDE as my window manager?
VNC will automatically detect your default window manager, and load this when you connect to your Xvnc session. If for some reason this is not the case, or you'd like to use a different window manager other than the default, you'll need to edit ~/.vnc/xstartup. This will not affect existing VNC ...
- Can I install VNC Server without root permissions/access?
Yes, you can install VNC without root by using the tarball download rather than the RPM. Unpack the download and run the vncinstall script as follows: vncinstall should be a directory on your PATH to which you have write permission. You'll then need to install a license key to the same direc ...
- I'm receiving the error 'getEthernetMAC failed'.
VNC Enterprise Edition needs to be able to read the MAC address of the computer for licensing purposes. Some virtualization software does not provide a MAC address for the virtual servers it hosts. You can verify that this is the problem by running the following command: /sbin/ifconfig This will ...
- Using vncserver to start more than 99 desktops
vncserver can only automatically allocate display numbers in the range 1-99. If you want more than that, you'll need to specify the display number explicitly. Bear in mind that, by default, each server uses ports 5800+n for HTTP, 5900+n for RFB and 6000+n for X client connections, which means th ...
- How can I configure a view-only password?
To configure a view-only password, you need to run the vncpasswd program as follows: vncpasswd $HOME/.vnc/viewonly To configure your VNC desktop to use this, you need the following options: SecurityTypes=RA2 UserPasswdVerifier=VncAuth ViewOnlyPasswordFile=$HOME/.vnc/viewonly Assuming ...
- How do I run multiple screens/sessions of VNC?
VNC Server for UNIX can be used as a stand-alone "virtual" X server, or it can attach to an existing X Server. To start a new virtual X server accessible via VNC, use the "vncserver" command. The man page describes it in full detail, but the most common usage is: $ vncserver VNC Server Ent ...
- Xvnc does not work in -inetd mode on RHEL5 or CentOS5
"xdmcp" is not automatically enabled on in RHEL 5 or CENTOS 5. Setting "Enable=true" under the [xdmcp] stanza of "/etc/gdm/custom.conf" resolves this.
- Can I prevent the Xvnc process from running under root?
Xvnc is installed as a setuid root binary because root access is required for certain features. For security reasons, it relinquishes root permissions for the majority of the code as soon as possible, but retains a co-process running as root for features that require root access. This allows the ...
- How do I get the core dump of a crashing application?
To get a core dump before the application crashes, please run the following command before starting it: ulimit -c unlimited Then run the application, in this case vncserver. When it crashes, there should be a file named "core" or "core. " in the working directory, or perhaps in /var/crash. O ...
- The vnc.so module isn't working under Fedora 8.
Fedora 8 uses a mix of Xorg 7.2 and 7.3. The key component is actually the xorg-x11-server* packages, which are version 1.3. The module should work with this version of the X Server - it's X Server 1.4 and later (included with Xorg 7.3 and later) which gives us problems, and is not supported. Yo ...
- Where does x0vncserver log to?
By default, x0vncserver will simply log to the terminal it was opened in. If it was started from a menu, you might see some output in ~/.xsession-errors (if it exists). You can configure it to log to a file by using the log parameter, and directing it to a file: -log=*:stdout:30 > ~/.vnc/x0vn ...
