how to configure xmanager to centos7 [9]

I had installed centos7 in my computer,and modified the file /etc/gdm/custom.conf and the iptables according the FAQ in the website of "http://www.netsarang.com".but the xmanager didn't work,there is no graphic windows.

expect your answers!

Program Ver. : Xmanager 4
Connect Method : XDMCP connection

CentOS 7 requires direct access to local graphic hardware and this causes problem when you are connecting via XDMCP.

To connect to remote CentOS, you cannot use the default gdm and Gnome desktop environment. Here is how you can switch to lightdm and xfce:

*You need root user rights to complete this guide.

Switching XDM from gdm to lightdm

1. Install lightdm

# yum install ftp://ftp.sunet.se/pub/Linux/distributions/fedora/epel/7/7/ppc64/epel-release-7-0.2.noarch.rpm

# yum install lightdm

2. Configure lightdm
# vi /etc/lightdm/lightdm.conf

*If the file does not exist, create a new file.

[XDMCPServer]
enabled=true

3. Change the Display Manager to lightdm

# systemctl disable gdm ; systemctl enable lightdm

4. Start lightdm

# systemctl start lightdm

5. Disable firewall.
# systemctl stop firewalld.service

* If you do not want to disable firewall, you can just allow incoming UDP port 177.


Install Xfce

1. Add repository
# yum install ftp://ftp.sunet.se/pub/Linux/distributions/fedora/epel/7/7/ppc64/epel-release-7-0.2.noarch.rpm

2. Install Xfce

# yum groupinstall xfce

If you prefer KDE, you can use KDE instead of Xfce.

- Install KDE
# yum groupinstall kde-desktop

3. Restart lightdm

# systemctl restart lightdm

4. Use Xmanager to login.

i have done all steps following above descriptions, but still get no response when i try to connect XDMCP.

If you have configured the remote server and still cannot connect via XDMCP, then this is probably not a configuration issue.

Please send us the following information:

- Xmanager log. To retrieve this file, wait until the connection fails and then, right click on the Xmanager title bar and select Log > File.

- If there are any error messages, please copy the full error message and send it to us.

- Can you use SSH to connect to the host?

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Technical Support

Xdmcp: received a WILLING message.
Xdmcp Request Address: 192.168.1.6
Xdmcp Connection Address 0: 192.168.1.152
Xdmcp Connection Address 1: fe80::403c:a9b1:c4a9:5622
Xdmcp Connection Address 2: 2001:0:ca6a:c725:28b7:1fd2:3f57:fe67
Xdmcp Connection Address 3: fe80::28b7:1fd2:3f57:fe67
Xdmcp: sent a REQUEST message.
Xdmcp: received an ACCEPT message.
Xdmcp: sent a MANAGE message.
Xdmcp: received a FAILED message.
XDMCP fatal error: Session failed Failed to connect to display :1
xmgrRRSetConfig: 1920 x 1000
Low level keyboard proc already hooked.

The message shows that you could not connect to DISPLAY :1. However, DISPLAY :1 refers to the linux machine itself that you are attempting connection to.

When using Xmanager, the DISPLAY may be YOUR_PC_IP_ADDR:DISPLAY_NO. DISPLAY_NO can be 0, 1, 2, etc. There is no way for us to know why display was :1 or where it was set.

If you want to use CentOS 7, try reading over our blog article below.

centosxmanager.png (47.9 KB)  

Hi, I encounter the same problem... And it makes me crazy...

Is there a solutions?


thx

In my case, install lightdm and change to lightdm instead of gdm.

You can follow the instructions on our blog post concerning connecting to CentOS7.

http://blog.netsarang.com/89/connecting-to-centos-7/

Technical Support

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