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X.org / X-server HowTos

Tutorials, tips, hacks, and howtos about X.Org Server ( the X server ) and system used by Linux, *BSD, and Unix like operating systems ( rss feed ).

I'm installing FreeBSD 10 Xorg and xfce4 desktop. But, getting the following error:

(EE) Failed to load module "fbdev" (module does not exist, 0)

How do I fix this problem on FreeBSD 10 amd64 based system?
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Fix: /bin/dbus-launch terminated abnormally without any error message and solution

I am a new Linux server user. I need to tunnel X over ssh. I type the following command on a CentOS/RHEL based remote host to get display on a local desktop:

ssh -X user@server1.cyberciti.biz
xeyes &
firefox &

But, I am getting an error that read as follows:

**error**: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information. (Details - 1: Failed to get connection to session: /bin/dbus-launch terminated abnormally without any error message)

How do I fix this error on a newly formatted/installed RHEL or CentOS Linux 6.x server?
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X11 forwarding request failed on channel 0 Error and Solution

I am a new Linux server user. I need to tunnel X over ssh. I type the following command from OS X Unix terminal to login into far_away_machine (a centos server):

ssh -X -o options -A -p 22 user@centos-far-away-server

But, I am getting the following error on screen:

X11 forwarding request failed on channel 0
Last login: Sun Mar 23 15:58:51 2014 from

How do I fix "X11 forwarding request failed on channel 0" on Linux or Unix-like systems?
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Linux Gnome Desktop Windows Decoration Disappeared

Sometime when I logged on to my Gnome Linux desktop I noticed that windows decoration disappeared i.e. minimize / maximaize / close buttons and other decoration gone. How do I fix this annoying problem under Fedora / Mint / Debian / Ubuntu Linux gnome desktop?
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Where Is The Xorg.conf File Located under Unix / Linux / BSD?

I want to find and edit my xorg.conf file for tweaking and configure it for new settings. The problem is that I'm unable to find the file. According to my research, xorg.conf should in /etc/X11 or /usr/X11R6/lib/X11/ directory. I found directories but not the file in directories. How do I find the xorg.conf under Unix or Linux like operating systems?
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Linux: Configure Xorg X11 Window System

My xorg.conf file is missing as I deleted accidentally for some reason. Now, Xorg try to probe my hardware on every startup. How do I configure Xorg under Debian or any Linux distro / operating systems?
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Linux: Allow SSH Console Login But Not GDM / KDM / X Windows Based Login

I'd like to only allow ssh or console based login (ssh, su, sudo commands) but restrict specific users from using GDM / KDM / X Windows based login under Linux operating systems. How do I stop direct GUI user login using GDM / KDM / X Windows login managers and only allow text based logins?
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Linux / UNIX: Run Multiple X Sessions

How do I run multiple X Session under Linux or UNIX operating systems? How do I switch between X sessions?
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Adobe Photoshop Alternatives For Linux Desktop

I need Photoshop alternative under Ubuntu Linux for basic editing. I know Photoshop can be run using Wine but I'm not able to afford expensive software for just basic editing. Can you suggest a few free FOSS apps that works as alternatives to Photoshop under Ubuntu or Fedora Linux desktop operating systems?
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Linux Disable and Remove X Windows (X.org)

I revived my new Dell server pre installed with Red Hat Enterprise Linux server v5.2. However, my box boot with a GUI login system ( Gnome ). There is no reason to run X Windows on my dedicated mail and Apache web server. I only need ssh. How do I disable X login and windows without reinstalling the operating system to improve security and performance?
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