Keyboard problem running Xvnc through inetd

[José Alburquerque]

Hi. I run Xvnc through inetd (using the openbsd-inetd package) to see get a lightdm login screen which allows me to login to my system remotely as if I was at the desktop (I use ssh tunnels to ensure the connection is secure). The configuration files that make this possible look like the following:

------------------/etc/inetd.conf------------------
#<off># sane-port stream tcp nowait saned:saned /usr/sbin/saned saned
#<off># ftp stream tcp nowait root /usr/sbin/tcpd /usr/sbin/wu-ftpd -l

# Added by admin (Jose)
7000 stream tcp nowait nobody /usr/bin/Xvnc Xvnc -inetd -desktop=Server -query localhost -IdleTimeout 7200 -depth 16 -geometry 1920x1080 -once securitytypes=none

8000 stream tcp wait nobody /usr/bin/Xvnc Xvnc -inetd -desktop=Server -query localhost -IdleTimeout 7200 -depth 16 -geometry 1920x1080 -once securitytypes=none
---------------------------------------------------------

----------/etc/lightdm/lightdm.conf-----------
[SeatDefaults]
greeter-session=unity-greeter
user-session=ubuntu

[XDMCPServer]
enabled=true
---------------------------------------------------------

I connect successfully from a remote host and get the login screen. I can also successfully login using either the unpersistant session above (the one associated with port 7000) or the persistant session (the one associated with port 8000). The problem I'm experiencing is that if I open a gnome-terminal (I'm running the gnome fallback mode with no effects the BTW) and press the letter 'd' in the terminal, the terminal is minimized and the letter 'd' never appears in the terminal. The other keys (like 'a', 'b', etc.) work fine. No modifier keys are being held done on the keyboard. I don't know why this happens.

It seems that the keyboard interpreter applet is interpreting some modifier keys being pressed when they are not. On my regular desktop, if press Alt+Ctrl+d the same thing happens with a terminal (it is minized). I think that Alt+Ctrl+d is the hotkey to hide/show the gnome desktop.

Another thing that happens in a vnc session with the terminal is that if I press the up arrow key, the terminal is maximized. I wonder if this has to do with some configuration file that I'm not aware of.

 Could someone look into this? Thanks. I filed the following similar bug under the Xvnc source package, but I've got no replies and thought that it would be more appropriate here:

https://bugs.launchpad.net/ubuntu/+source/vnc4/+bug/1180968

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: gnome-settings-daemon 3.6.4-0ubuntu8
ProcVersionSignature: Ubuntu 3.8.0-23.34-generic 3.8.11
Uname: Linux 3.8.0-23-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu8.1
Architecture: amd64
Date: Mon Jun 10 13:19:03 2013
InstallationDate: Installed on 2010-04-19 (1147 days ago)
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MarkForUpload: True
SourcePackage: gnome-settings-daemon
UpgradeStatus: Upgraded to raring on 2013-05-02 (39 days ago)