Server :: Partial Connection To XDMCP With Xming?
May 6, 2011
I had Xming working great with XDMCP on my Debian 6 server at work. I had to replace the UPS and when I brought the machine back up xming/XDMCP no longer worked correctly. When I launch Xming and connect to XDMCP session I get the Xming window, the X Cursor but the GDM login window never appears. So I am getting some level of connectivity. The only change that was made to the server was that OpenVPN service was turned on. I do not know if this is the right log to be looking at but /var/log/gdm3/:0-greeter.log has this in it a number of times:
(polkit-gnome-authentication-agent-1:2252): polkit-gnome-1-WARNING **: Error enumerating temporary authorizations: Remote Exception invoking org.freedesktop.PolicyKit1.Authority.EnumerateTemporaryAuthorizations() on /org/freedesktop/PolicyKit1/Authority at name org.freedesktop.PolicyKit1: org.freedesktop.PolicyKit1.Error.Failed: Cannot determine session the caller is in
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Jun 16, 2010
I am going through cygwin's XWin.exe (XWin - queary <hostname>) to start a remote session with a RHEL 5.5 workstation. I have run gdmsetup on the worksation to allow the remote connection. Starting the remote session goes off without a problem. After about two hours, it just exits and I have to start over. This is a problem since all my gui's are killed and I have some important processes running.
/var/log/syslog/messages shows:
Jun 15 16:49:53 <host> gconfd (root-12016): SIGHUP received, reloading all databases
Jun 15 16:49:53 <host> gconfd (root-12016): Resolved address "xml:readonly:/etc/gconf/gconf.xml.mandatory" to a read-only configuration source at position 0
Jun 15 16:49:53 <host> gconfd (root-12016): Resolved address "xml:readwrite:/root/.gconf" to a writable configuration source at position 1
[code]....
There must be a 2 hour timeout set somewhere - maybe in a gconf xml file?
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Jun 29, 2011
I was installed xming application on windows XP & Windows 7to access Linux server's GUI session and i was able to access it using root account but when ever iam trying to access GUI using normal account it is giving some error.I am testing this since it is a freeware.
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Nov 8, 2010
on a openSUSE-11.3 how do I configure lxde so I can access it via a remote XWindow server via xdmcp?
Entry /etc/sysconfing/displaymanager:
DISPLAYMANAGER="lxdm"
DISPLAYMANAGER_REMOTE_ACCESS="yes"
Entry in /etc/sysconfig/windowmanager:
DEFAULT_WM="startlxde"
[Code]...
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Nov 30, 2010
I need to setup a xdmcp server on ubuntu 10.10 to allow for remote connections. Obviously this cant be done from the login window as with previous versions of Ubuntu.
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Jul 9, 2009
I'm running an Apache web server version 2.2.11 on Fedora 10. I'm trying to get it to run a PERL cgi script but with only partial success. The script uses the PERL cgi package.
The perl script is a simple test case that creates a form to fill in. Once the submit button has been clicked it should then return the data submitted. The perl script writes this to a file called output.cgi
The intial script located in /var/www/cgi-bin/index.cgi gets executed fine when I go to [URL], this works with no probs. However once I hit the button to submit the data I then get the error
Not Found
The requested URL /cgi-bin/output.cgi was not found on this server. Apache/2.2.11 (Fedora) Server at localhost Port 80 Im not sure if its a perl problem or server setup problem, theres probably a simple switch or something but Im out of ideas at the moment.
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Nov 22, 2010
The application is Ericsson CDMA C-EMS V1702 and the tool allows a user to remotely log into an Ericsson/Nortel CDMA Base Station Manager server at a Mobile Telephone Switching Office.I hope I can explain this well, I will include screen shots:Here are the steps I follow:[URL]
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Dec 15, 2009
I have a openSUSE 10.3 box with kde and gnome on it.I can enter in Kde or Gnome from that machine but from remote (using Xming) I can enter only to the KDE.After I introduce the username and password nothing happens.Why I could not enter in the Gnome environment too?
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Mar 23, 2011
Linux printing appeared to be working fine up until yesterday. Today typing lpq gives the following: lpq Printer 'sdst@other.domain' - cannot open connection - Connection timed out Make sure LPD server is running on the server
The /etc/cups/printers.conf file is properly set, the printers appear in localhost:631 and they are printing test pages. However, all command line print commands seem to be trying to print to sdst@other.domain I don't know why printers.conf is being ignored and why and how sdst@other.domain was added. Seems like it might have been auto-discovered?
# dit: sdst@other.domain was mentioned in /usr/local/etc/lpd.conf I'm not sure why lpd.conf is being used instead of /etc/cups/printers.conf
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Apr 23, 2010
I am trying to remotely access a linux machine to run Cadence from my laptop.I downloaded Putty and Xming/XLaunch.I run Putty, enable X11 forwarding, then sign into my host address.I am successfully able to access and navigate through my home directory, however once I try and run Cadence, I get the attached error.
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Feb 1, 2010
I have a windows 7 computer running Xming 6.9.0.31. I connect to my linux box running Ubuntu Server 9.10 with plink and run urxvt. It starts up and works perfectly however the urxvt screen flashes the xming root window about twice a second.This makes urxvt impossible to work with.Everything else that I have tested over the ssh connection (xterm, xfce4-terminal, etc) work perfectly with no flashing and this same problem has happened with two other linux installations (again only with urxvt)
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Jun 22, 2011
I'm running Eclipse on a Linux server and I'm displaying it locally through xwindow forwarding using xming.Whenever I create something like a subwindow (like opening project properties or the Project Explorer when when pulled out of the main window), these windows are not resizable. When running natively on Linux, the resize is possible without a problem.
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Feb 3, 2011
I've been spending sometime trying to setup anclient on windowso access my fedora serverI'm currently using xming but there's no way whatsoeverme to make gnome available remotely. The closest I got was to open a standard X session with no icons but just a terminal.Is there any quick sanity check I can do before spending more time on this
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Jun 21, 2011
I am using XMing+Putty to access a Linux machine from an XP32 machine. I can copy text from windows and paste it to Linux fine, but I can't copy from Linux and paste to Windows consistently. If I try several times (or hold down the paste keystroke) it will eventually paste; sometimes several times!
I would like to improve the consistency of my Linux to Window pastes. I have per-mutated every combo of Clipboard and Clipboard2. I can not edit /etc/gdm/custom.conf like some other fixes suggest. I have been informed the Linux admins will not allocate resources to resolve this problem in the near future so any fixes need to be Windows side or able to be done without root/admin privileges.
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May 20, 2010
I'm a frequent user of the shared connection feature of SSH. Usually i have two or three connections open at the same time through the connection sharing feature, but sometimes when i try to start another i get the message "Shared connection to <server< closed". All the connection that are established through the connection sharing feature are still active and not closed, but when i try to create a new one i get that message.. i've even got that message when i have only had two connections through the shared connection feature.
I've tried to search google but it doesnt seem like anyone else has had the same kind of problem, does someone know why i sometimes get this error ?
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Jun 25, 2009
on Debian/Ubuntu in the login form (i suppose it's "gdm") from the bottom right corner I can pick the option to login to a remote XDMPC desktop (that of course I enabled on the other side..) the network is checked for those open XDMCP service and finally, the login box appears and i can remotely login to a "graphic terminal".
How can I do the same in Fedora? I found some guide about Xnest, Xzephyr, but I was totally unable to find a way for doing this simple task.
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May 13, 2010
I want to run a system that acts as a basic file server, I want to remove the graphics card for the sake of power saving and less heat in the box. My machine can boot without the GPU, and I can ping it and use putty to do things, but I'm still new to Linux and don't really know what I'm doing so GUI is best for me atm.
From somewhere I picked up that this is possible (the XDMCP server machine can have no GPU). This post here [URL].. seems to be what I am looking for, but I don't know how to "convert" these instructions to Ubuntu (the files mentioned do not exist on my install anyway).
[Code]...
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Jun 20, 2011
I'm on a private network and would like to have XDMCP turned on so different users can access the system with a greeter and log in to their own desktop.To test if this works, I've tried 'Xnest :1 -query localhost' - which on other _nix systems will bring up the greeter, then I know that all I have to do is deal with firewall issues, etc. On Ubuntu 11.04 I just get a blank screen.I've seen others asking for help with XDMCP, and the answers are to use VNC, which from my experience allows you to _share_ the current desktop, not create a new one for a different user to use at the same time. If I am mistaken please let me know.So, any ideas on how to get XDMCP up and running on Ubuntu 11.04?
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Jun 13, 2010
I heard that window managers like xdm, kdm and gdm etc use xdmcp protocol which is inherently unsafe. Now I have an Xclient that has to be displayed on multiple Xterminals. Can I do this without gdm/xdmcp. Shouldn't the regular X work in this case. What exaclty is the purpose of gdm/xdmcp on top of X. So if gdm provides the complete desktop manager, does this mean it is unsecure since it uses xdmcp?
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Jun 17, 2010
I always notice that xdmcp always runs on my system. I don't want it to. These are my settings and I tried to reboot. xdmcp still runs. How do I stop it once for all.
/etc/sysconfig/displaymanager
DISPLAYMANAGER="kdm"
DISPLAYMANAGER_REMOTE_ACCESS="no"
DISPLAYMANAGER_ROOT_LOGIN_REMOTE="no"
[code]....
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Feb 21, 2010
This applies to GDM as well, but I'm using KDM right now so:
Linux 2.6.31.12-174.2.19.fc12.x86_64 #1 SMP x86_64
I setup XDMCP:
/etc/kde/kdm/kdmrc
[Xdmcp]
Enable=true
Willing=/etc/X11/xdm/Xwilling
Xaccess=/etc/X11/xdm/Xaccess
[security]
AllowRemoteRoot=true
DisallowTCP=false
/etc/kde/kdm/Xaccess (link to the xdm 'xaccess' file) includes:
* CHOOSER BROADCAST
In KDM settings I set it to 'no theme' and 'no custom background'. IPTables & SELinux are both off. The client & server are both on the same switch. I can connect successfully. But all I get is a black screen & an X cursor, never get to see the login prompt. Most things I find have to do with the inability to connect at all, but this connects. I'm having this problem on RHEL5.4, CentOS5.4, & Fedora 12. I'm troubleshooting it on Fedora though. I'm not able to even log in.
I must point out that for CentOS5/RHEL5 I got this working, but I didn't do anything differently that I know of. I just repeated the same process over again....but I'm using GDM on those. Is it possible that I may have to use GDM for KDE because it works with GDM? I'd like to get KDM working because that's what it's designed to do right? work the way it's configured. I've not had a chance to look into it with KDM since the time that I posted this thread.
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Jun 25, 2010
We have a lab at our school that has DevonIT thin clients. We want to connect to Ubuntu via xdmcp or freenx from these clients, and we want users to be able to connect to our Novell file server from these clients. I can't find instructions on how to install the client, which I found at KDE-Apps.org. It is a tar.gz file. I'm not new to Linux, but rarely install apps from source. Could someone walk me through it, keeping in mind I do not use the command line much? [URL]..
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Jul 17, 2015
I'm trying to get an laptop running more or less like a headless server, my reasons are not all that serious. Mostly I want to leave the laptop running as a seed box when my main PC is turned off, also want to setup it up as a media top, common place for media files and playback on Tv. So essentially I want to be able to access the remote machine, preferably sharing the same session and persisting while I log out from remote.
What I've done:
setup keys for ssh to connect automatically between machines, so I can login via terminal, access the file system without issues, which is already a great step. enabled remote access on remote machine lightdm manager setup deluge for daemon torrenting, which enables almost seamlessly client to connect remotely (though deluge is not the best with speed)
What I've tried so far:
Connect directly with a new X session
Code: Select allX -query your_server_ip :1
Works alright, creates a new display (:1) which is oddly in F2 tty instead F8 as is expected. Works alright, not much lag, audio is not routed.
But an issue! whenever I decide to log out X will simply shutdown, screen goes black and I can't resume on my regular session on my local machine.Connect X with nested Xephyr session
Code: Select allXephyr -query your_server_ip -screen 1280x1024 :1
This works too and might be the best solution yet, a windows is created and the remote session is nested in your current X session. Visual and performance is ok. Only real issue is that session is not shared, eg, application will not remain running...Connect via VNC
So it seems only solution for shared sessions is VNC.
With the remote desktop apps from KDE (which is the DE for both), I can connect buzz around and etc, but its kinda cumbersome and laggy, password always resets and I usually need to accept on the remote machine.
I've tried setting up lightdm to allow a vncserver at logon, but this is erratic at best, took a long time to get the Xvnc command correct enough for me to login remotely, and even then got a garbled screen and the X session wasn't even the same...
So that's it... Isn't there a way of regular X session sharing in the remote computer? Or a better solution for lightdm vnc invoke?
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Jul 22, 2010
How can I manage to avoid double login to a user account in the server by remote users? Is there a way to block it or to hide logged user accounts?
I have two server, one f12, the other f13 (behind a firewalled router) and want them to serve desktops to anybody in the local network. User accounts in both servers are established as username: user1 password: user:1 , username: user2 password: user2 ....... Every remote user should take an available user on server but no multilogin to the same user. Remote users are no adult so they can mistake. That's the problem. On the remote dektop section unmark everyone can see my desktop didnt help.
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Mar 16, 2010
I've been used to using RDP on Windows to remote to machines, and I've got an asus eee 701 which I want to use to do some *nix programming on. While the eee is a lovely little machine the screen and keyboard are a little small to use for lots of programming. I've tried using Xming (the free version) to remote login into the eee from my desktop using XDMCP (or even using a ssh session as a straight X11 server and no desktop on the eee) the whole thing seems seriously slow over wifi the initial desktop takes at least 5 seconds to paint (might even be 10 seconds I haven't actually timed it). So my real question is what do other folks use for remote control with a GUI for their *nix boxes? I am finding it hard to believe the performance is so bad over a wifi network (It makes the Mac IIs I used to use a college in 1988 seem fast) or is this just a problem with Xming and using say the Cygwin X11 server would be better.
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Apr 3, 2011
I use XDMCP from an old laptop to login remotely to another computer which is running Debian 6. This seemed to work fine in Debian Lenny, and the laptop screen would switch off after a period of inactivity as I expected. Now the laptop screen blanks after inactivity, but the backlight never switches off.
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Jan 5, 2011
I'm trying to use xmms (or any other audio player) lauched from a remote computer but playing locally. I have a maverick server which has xmms installed. I launch an xdmcp (starnetssh) from a windows machine and I am able to open terminals, panels, emacs, etc but when I open xmms (or MOC, is the other one I tested), it simply doesn't play anything unless the same user is logged on the ubuntu box.
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Feb 10, 2011
I am running an Ubuntu Server on a VirtualBox VM running on my windows machine. So I've created a self-signed certificate using the following tutorial: [URL]
From this tutorial I'm left with 3 files:
server.key
server.csr
server.crt
Then I found this very similar tutorial that has an extra bit on installing the certificates in apache: [URL] So I followed it's instructions which boil down to this:
[Code]...
So I'm thinking this should work now. However in Chrome I get: SSL connection error Unable to make a secure connection to the server. This may be a problem with the server, or it may be requiring a client authentication certificate that you don't have. Error 107 (net::ERR_SSL_PROTOCOL_ERROR): SSL protocol error. IE8 gives me a typical "Internet Explorer cannot display the webpage" Note that [URL] fails while [URL] works fine, so it's definitely something in my ssl setup I'm thinking.
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Apr 28, 2010
vsftpd not working on my CentOS system. I tried logging in using FileZilla but the error message was: Connection attempt failed with "ECONNREFUSED - Connection refused by server".
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Feb 2, 2010
I can make a connection to the vpn server, the connection starts, but nothing happens! My IP address remains the same as previous! There is nothing added to my Knetworkmanager, I'm a beginner I should use a pcf file for my vpn connection. I use it properly, I'm sure because the connection starts and an icon is added to my panel and remains until I disconnect.
I checked it via ifconfig -a, the last part (which is for vpn) is:
Code:
tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:141.213.169.76 P-t-P:141.213.169.76 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1390 Metric:1
RX packets:4 errors:0 dropped:0 overruns:0 frame:0
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