The tag has no wiki summary.

learn more… | top users | synonyms

22
votes
5answers
2k views

Why does the X Window System use a server?

I never really understood why a window system must have a server. Why do desktop environments, display managers and window managers need xorg-server? Is it only to have a layer of abstraction on top ...
20
votes
2answers
33k views

Is there a command to list all open displays on a machine?

When SSH'd locally into my computer (don't ask, it's a workaround), I can't start graphical applications without running: export DISPLAY=:0.0 If I run this first and then run a graphical ...
9
votes
1answer
538 views

Why need drivers for both x server and the linux kernel?

Can someone explain why two sets of drivers are needed, one in the Linux kernel and one in X? I understand that the device drivers are in the kernel, but what is the role of those in the xserver? ...
5
votes
3answers
3k views

How does X-server calculate DPI?

From Xfce Docs: In case you want to override the DPI (dots per inch) value calculated by the X-server, you can select the checkbox and use the spin box to specify the resolution to use when ...
5
votes
1answer
418 views

How to remap a key combination to a key?

Is it possible to remap a key combination to a key in X server based system, so that for example if I press End + Arrow_up, keycode for Home is generated? Google seems to be silent on this issue. It ...
5
votes
0answers
54 views
+100

emulate key-combination with xdotool

I am using Xephyr as a nested X server. When I am in Xephyr window and pres the key combination Control_L+Alt_L+Shift_L, Xephyr grabs my input (mouse, keyboard). This grab can be released with ...
4
votes
2answers
231 views

Screenshots from multiple Xservers

I want to take screenshots simultaneously from multiple X servers on one desktop PC. I have multiple users logged in different terminals (tty1, tty2, tty3, tty4) who start multiple Xservers with ...
4
votes
1answer
1k views

What is the max number of x-clients?

I am developing an x-server implementation, and I want to make it as similar to the current one as possible. I read through the documentation, but I couldn't find anything specific. In particular, ...
4
votes
1answer
151 views

Real chroot on a systemd machine

I'm trying to get used to systemd, because it seems to be the way that Debian is going. I want to run Xorg in a chroot on hardware, rather than using networking (which seems to be the canonical way ...
4
votes
1answer
222 views

vim stops sending text to * (X11) register?

I recently started using VcXsrv with the hope of being able to grab text from vim (console mode) to the Windows clipboard via X11 forwarding (and the * register). It works...to an extent. As soon as I ...
4
votes
1answer
350 views

Is it possible to use xsetroot and dwm to set the top and bottom bars at different time intervals?

I'm using dwm with the dualstatus patch. This adds a status bar on the bottom of the screen, in addition to the standard bar at the top. The text in each bar is set in ~/.xinitrc (for example) like ...
3
votes
2answers
547 views

Why .Xauthority needs not to be owned by the root account in order to get past login?

I've just got the same problem from here, and solved it using what was stated in the first answer (akonsu's one). However, I would love to know why ~/.Xauthority needs not to be owned by the root ...
3
votes
1answer
881 views

How to determine if X server runs with root privileges

This is a one-liner: Is there a way/command to check if the X server is run as root or as user? This was supposed to be a one-liner but alas... I recently upgraded my Arch Linux box. After the ...
3
votes
1answer
6k views

minimal X.org xserver installation on Debian Wheezy

I installed Debian Wheezy with no desktop environment as I would like to use lightweight dwm window manager instead. However, as a first step, I need to install xserver. I would like to install ...
3
votes
1answer
149 views

Can one disable tap-to-click in X server configuration without “InputClass” sections?

I want to configure my system so that tap-to-click is disabled on the touchpad. (It's running a rather old version of ALTLinux distro with xorg-server-1.4.2-alt10.M41.1.) I'm interested in a solution ...
3
votes
2answers
4k views

How to attach to remote machine's local display session over ssh?

Scenario: Linux mint is running on a machine at my home. I have some gui applications open on it. I'm away from home but want to get at the open applications. I have cygwin/x and I know how to ssh ...
3
votes
2answers
307 views

How do I screencap another Xorg display?

I started another x session from my current one like so: xinit xterm -- :128 An x session starts in display :128, xterm gets run in it and everything is fine. I switched back to screen :0 (the ...
3
votes
3answers
4k views

NVIDIA driver upgrade failed

I downloaded the latest(331.49), tried to install, but failed. I compiled the kernel module and at the end of the installation it said that it went successful. But on bootup it said: version mismatch, ...
3
votes
1answer
290 views

Unable to host a server with Xpra, only connect to an existing one

I've downloaded and installed Xpra from their distribution hosted on winswitch. However, when I try to run it on my server I'm getting: This xpra install does not support starting local servers. ...
3
votes
1answer
78 views

On Solaris 7 Box trying to get X Record Extension Library to work using x11vnc

Does Xsun support this extension? Im on a Solaris Sparc Ultra 2 SunOs 5.7. x11vnc version: 0.9.9
3
votes
1answer
354 views

How to prevent killing the X server with CTRL+C using bash traps?

On my Debian Wheezy system, I used to start my X session with the startx command. My .xinitrc file is: exec /usr/bin/awesome --config /home/cscs/.config/awesome/rc.lua >> ...
3
votes
0answers
42 views

Run multiple XServer instances on the same machine on different processor cores

If I have two separate graphics cards (for the sake of discussion, an NVIDIA Quadro K4000 and Quadro K6000), can I run two separate xserver sessions on two different processor cores, keeping the GPU ...
2
votes
2answers
16k views

stop Xserver in Xubuntu 11

I want to shutdown my X to be able to install proprietary NVidia driver, but I couldn't find out how. There are some suggestions that didn't work for me. I neither have /etc/init.d/gdm nor ...
2
votes
3answers
2k views

Lost mouse pointer in XServer

Have tried many windows managers including TWM, xfce and Gnome, but my mouse pointer is gone. It is invisible, but it performs all the actions. If I do the right click the context menu opens and this ...
2
votes
2answers
70 views

Unable to start X Server with no screens, no xorg.config to edit

I am trying to start the X server (I have all the packages installed). The problem I am having is that the server is offsite, has no screen and never has had a screen connected to it and as a result ...
2
votes
1answer
33 views

Maintain Xserver applications running even after closing the remote conecction

We have a Ubuntu server (mainly a compute server), which does not have X-server installed on it. One can use something like Byobu or Screen to have programs running on the server even after the SSH ...
2
votes
1answer
476 views

Can one disable tap-to-click in X server configuration, without synclient?

I want to configure my system so that tap-to-click is disabled on the touchpad. (It's running a rather old version of ALTLinux distro with xorg-server-1.4.2-alt10.M41.1.) The most popular advice I ...
2
votes
1answer
1k views

Arch modules not loading on start?

I keep getting errors on startup in Arch relating to my rc.conf: failed to load module "wl" failed to load module "lib80211" etc. It lists all the modules in my /etc/rc.conf This is my full ...
2
votes
1answer
89 views

How to let a daemon prompt for a password (in Xsession, keyloggersafe)?

Exposition: Working inside an XSession. Some (background) deamon needs to prompt me for password input. How can I make the daemon to prompt me for a password using a popup in the Xsession? ...
2
votes
3answers
3k views

How to Cygwin Xwin -query an Ubuntu 11.10 Xserver?

I am running Cygwin 1.7 on Win7 Pro x64, and I can query my Ubuntu 10.04 LTS server just fine. XWin.exe -clipboard -once -rootless -nodecoration -notrayicon -query $IP_ADDRESS I recently installed ...
2
votes
1answer
82 views

How do I monitor display :1 while I'm using display :0?

I am running X on two displays. :0 is my primary display but I also have some programs running on :1. Is there any GUI application that will let me monitor display :1 in a window that sits on display ...
2
votes
1answer
1k views

Installing KVM on CentOS 6.4 without GUI (yet)

I've installed CentOS 6.4 from the 'minimal' iso, so it doesn't come with a GUI. Will this question's answer allow me to install KVM, or do I need to install KDE or X-server or something first?
2
votes
1answer
3k views

Authenticating with x11vnc: what's the difference between -auth and -rfbauth?

I'm on xubuntu 11.10 trying to setup x11vnc server. I followed instructions here and I can connect to VNC server - but it never asks me for password! Is there a difference between these 2 options: ...
2
votes
2answers
110 views

What is “access control” with X Server?

What is an access control restriction with an X Server? There is the -ac option that "disable access control restrictions" with e.g. Xephyr. I saw some example using that option, but I have no idea ...
2
votes
2answers
1k views

How to close all apps before X-server goes down?

I'm using debian testing OS and openbox WM. Moreover, I start X-server via the .xinitrc file, which has the following content: xrdb /home/morfik/.Xresources exec ck-launch-session dbus-launch ...
2
votes
2answers
2k views

How to change the default TTY after boot?

Normally when system starts you have all output printed on the TTY1, and that's ok, but I start X-server via startx and achieve this by the following lines in the ~/.profile file : if [[ $(tty) = ...
2
votes
2answers
320 views

Simple LiveCD running only Xorg Server

I have a netbook without HDD, I think it could be useful for monitoring logs. Do someone know about a light LiveCD, running only a Xserver?
2
votes
0answers
32 views

Make mouse side buttons trigger virtual keys

I have a mouse with two side buttons. I've posted the output from xev and evtest for both buttons: xev EnterNotify event, serial 37, synthetic NO, window 0x4600001, root 0x306, subw 0x0, time ...
2
votes
1answer
33 views

what does Xserver access control mean

What meaning does Xserver access control have, when the Xserver is started with tcp disabled: /usr/bin/X11/X -nolisten tcp AFAIU, Xserver can be used to allow remote network connection. But, if it ...
2
votes
0answers
207 views

Startx Segmentation fault error after installing VirtualGuest Additions for Virtualbox

I have been using my backtrack version 5 on the Virtualbox for some time now but I had a resolution problem and after searching found out I better install VirtualGuest additions. However after ...
2
votes
0answers
167 views

So the design of client-server separation is not the bottleneck of X Window?

In the answer of this, it mentioned: People also hear that X uses the "network" and think this is going to be a performance bottleneck. "Network" here means local UNIX domain socket, which has ...
2
votes
0answers
280 views

Xorg and Xserver not starting up after hibernate

I'm currently running Mint 14 on this computer, but it also previously happened with Fedora 16 so I'm guessing it's a general problem with my drivers. The display will not start up after the laptop ...
1
vote
1answer
1k views

Restarting X in CentOS 5

I went to a CentOS terminal, and someone was logged in doing work. I hit Ctrl+Alt+F2 to try to get to my own session so I could check something. When I hit Ctrl+Alt+F1 to get back, X did not come back ...
1
vote
2answers
2k views

How to use all buttons of SteelSeries Cataclysm MMO Gaming Mouse in Xorg (GNOME)?

I've a problem with my mouse on Gentoo. The normal buttons (left/right/wheel and previous/next) work, but the other buttons are not recognized by x. I tried in xev and using them does not do anything. ...
1
vote
2answers
3k views

Starting Qt Application On Startup for Embedded Linux

I'm trying to get a Qt application to launch immediately after booting up. When booted, the Linux image does nothing more than launch an X server and a terminal. It also has the cron daemon running in ...
1
vote
1answer
93 views

pipe Windows windows to Xserver on my linux host

Is it possible to pipe a native graphical Windows application to Xserver? I would like to run a virtual machine on my Linux host and access the application directly. (Something like the seamless ...
1
vote
1answer
76 views

What does this `xhost …` command do?

Please help me understand this line of command: xhost +SI:localuser:lightdm in reference to the answer in this post and also suggest if there's a better way and why that's needed. I couldn't make ...
1
vote
1answer
126 views

How to use ARM as LTSP server? [closed]

Arm has a limited support for server packages on Linux but is it possible to use ARM board i.e Raspberry Pi or Banana Pi(it uses Armhf instruction set rather than dated Armv6 used by raspberry pi) as ...
1
vote
1answer
51 views

Get report of the gui application processes

I want to list main applications processes report in this format ps -e -o pid,comm,pmem,pcpu,uname To filter main GUI applications wmctrl -pl is the only way I can get processes ids.its great if ...
1
vote
2answers
81 views

Will I utilize graphics hardware if I run X on the server?

Will I utilize graphics hardware if I run X on the server? If not, then what is it there for? E.g. Dell PowerEdge R210 II has integrated Matrox G200eW with 8MB memory on board, and some of the ...