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Questions tagged [x11]

The X window system (commonly X Window System or X11, based on its current major version being 11) is a computer software system and network protocol that provides a basis for graphical user interfaces (GUI) for networked computers.

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Duplicate screen Xorg over network

I'm looking for a way to duplicate my desktop on a network. (Something that would work on a web browser client would be amazing.) I tried to use vnc / x11vnc but quality/framerate is too low. (cpu ...
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1answer
23 views

X forwarding over ssh, issues with virtualbox

When trying to open virtualbox GUI over a forwarded session, I get the following error: steve@remoteHost:~$ virtualbox OpenGL Warning: Failed to connect to host. Make sure 3D acceleration is enabled ...
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17 views

X11 forwarding seems not working?

i am using ubuntu 16.04. The Server is also running ubuntu 16.04. my ssh config looks so: Host * # ForwardAgent no ForwardX11 yes ForwardX11Trusted yes # RhostsRSAAuthentication no # ...
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20 views

libGL errors when starting X applications via SSH

I have read a bunch of similar questions on this site and others, but all of them either didn't reflect my situation or didn't provide a working solution. So I have a Debian stretch x64 server ...
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1answer
16 views

How to fix my excruciatingly slow VNC connection? [on hold]

I'm starting Xorg on a headless server while trying to take advantage of the Intel iGPU. my .xinitrc: #!/bin/sh userresources=$HOME/.Xresources usermodmap=$HOME/.Xmodmap sysresources=/etc/X11/xinit/...
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61 views

Why isn't there any xtruss package in any distribution? [closed]

xtruss is a very practical X11 debugging tool, mimicking the way strace/truss works, but with X11 windows instead of processes. In order to use it, I always have to compile it from sources. What's ...
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19 views

What is the meaning of ownership of a process on a window?

In manpage of xdotool getwindowpid [window] Output the PID owning a given window. This requires effort from the application owning a window and may not work for all windows. This uses ...
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25 views

Why do `xwininfo` and `xdotool` give me different window ids?

In a tab of a terminal emulator (lxterminal), I try to find out its window id by clicking in the tab and the process which "owns" the window (I am still not sure what is the word to describe the ...
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28 views

Does an X client process always have one or more GUI window(s)?

Does an X client process always have one or more GUI window(s)? Conversely, if a process has one or more GUI window(s), is it an X client process? Does an X client never have a controlling terminal?...
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2answers
33 views

Linux Service Cannot Open Display

On my Odroid running Ubuntu 16.04.3 LTS I have a python2 program that interacts with a display device (projector). When I run this program from the command line: python ~/imgProc/torcam.py ...
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44 views

Duplicate Xorg in a web browser

More and more things are web oriented nowadays and I'm wondering... Is it possible to duplicate a screen with Xorg on a "server" that can be displayed in a web browser ?
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1answer
109 views

Ubuntu(Mini) - How to replace the shell of system message dialogs with my own version? [closed]

I'm using Linux Ubuntu 14.04 LTS installed on VirtualBox using mini .iso and trying to make my own distribution based on it. I know, support of that version ends in 3-4 months, I'll update it on my ...
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1answer
29 views

Tmux window switch and SSH - reattach display

I am attaching through ssh -Y to my server, and rotating with tmux to a preexisting window. The problem is, if I just export DISPLAY=:<port ssh used originally for X> evince #for example On ...
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1answer
27 views

Flickering and artifacts when capturing screen using ffmpeg and x11grab

I'm using the following command to capture my screen: ffmpeg -f x11grab -video_size 1920x1080 -i :0.0+1920,0 -c:v libx264 artifact-test.mkv The resulting video contains flickering artifacts that look ...
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42 views

X Error of failed request: BadAccess (attempt to access private resource denied)

I ssh'ed to a remote linux server (both local and remote machines are running Centos 7) through "-X" option and tried to open a Python GUI file but I got this error: X Error of failed request: ...
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24 views

Undefined reference to symbol 'XTextWidth16'

I am trying to compile Frequency-time analysis software on Ubuntu and keep getting the error message below. Similar discussions on the on the internet suggest adding -lX11 flag, however this flag ...
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20 views

How to get the available X cursor sizes?

Suppose you have several X cursors on your system such as golden-xcursors or silver-xcursors. I already know it's possible to specify which cursor size you prefer by editing ~/.Xresources. For example:...
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1answer
18 views

No clipboard support with X11forwarding?

I've successfully setup X11forwarding from Linux to Mac. Now I'm able to run Thunar and get a window locally. But the clipboard is not shared between the Thunar window and Mac computer. Any ideas?
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28 views

How can I prevent a desktop monitor screen from going to sleep when inactive on CentOs 7 Linux?

How can I stop my monitor screen from going to sleep on CentOS 7 Desktop (X Windows) due to inactivity?
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1answer
32 views

X11 ignores preferred mode

Problem I'm transitioning the configuration of my multihead monitors from using some rather ugly scripts to /etc/X11/xorg.conf.d/10-monitor.conf. My layout has two monitors of 1920x1200, one rotated ...
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1answer
41 views

How do I detect when a monitor is plugged in or unplugged without acpi, xrandr, /sys and udev?

I've read the answers to this question but I don't have ACPI, the /sys/class/drm/card0-socket/status method does not work and the xrandr method chokes my CPU. udevadm monitor shows nothing when (un)...
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1answer
51 views

X11 Error When Run as a Docker Container

I'm trying to run an application from a Docker container which is supposed to open a GUI widow (a video stream in my case). The Docker container is run on a Raspberry Pi and I SSH into the Pi from my ...
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1answer
37 views

Downgrading libfontconfig1 causing Fontconfig error

During the building of dwm, I was prompted that X11/Xft/Xft.h cannot be found and apt-get can't install it because libfontconfig1 is 2.13.0-5 while 2.11.0 is required. So I downgraded the ...
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2answers
42 views

What controls the mapping between Ctrl+Alt+F keys, TTYs and X sessions?

On my CentOS system, Ctrl+Alt+F1 shows the X Windows session known as :0, but on other systems Ctrl+Alt+F7 may do the same thing. What determines how Fn keys are mapped to X sessions and TTYs? ...
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1answer
65 views

How to set custom property with xprop and open that program in one line?

I tried this: xprop -id $(gedit & echo $!) -f MY_VAR1 8s -set MY_VAR1 MyCustomVar Than i tried to xprop and click on the gedit window - MY_VAR1 was not present there. So i thought maybe i ...
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26 views

color filter in linux display stack

is it possible to change the displayed color in a monitor, either in its open-source driver, or other middleware in the display stack of a linux system? i came across this question because i visited ...
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1answer
136 views

modprobe: FATAL: Module fbcon not found. Number of created screens does not match number of detected devices

I am using debian. I recently have purged X11 and xcfe4 and reinstalled them both but whenever I lauch Xorg --configure I get this: (++) Using config file: "/root/xorg.conf.new" (==) Using system ...
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1answer
78 views

Xvfb: export display permanently

I have recently set up Xvfb on Centos 7 machine. It is working absolutely fine. Only problem is that if I quit putty session (remote access) it would keep running Xvfb in background but display ...
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0answers
34 views

Fedora how to astart GUI app under root [closed]

I have a problem starting gui apps under root. I works OK with other distributions (Ubuntu, Centos) but not with Fedora. Any clues? Could not open display (X-Server required. Check your DISPLAY ...
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1answer
94 views

startx failing from debian console in virtualbox VM: (EE) open /dev/dri/card0: No such file or directory

I'm running debian testing within a VirtualBox VM (Windows 10 host, VBox 5.2.20), and booting to the console. I used to be able to run startx just fine once logged in, but for the past while it hasn'...
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17 views

How to run PyCharm remotely?

I have ssh'd to my CentOS using OSX using -X flag. For example, I can open images using xdg-open command. However, I cannot open PyCharm. How should I fix this error? Additionally, is there a way to ...
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Xclients..how it work?

I want to test Xclient script I create it and edit vim $HOME/.Xclients I simply put this line /usr/bin/xeyes Make a startx and...nothing happen. Script has correct permissions(755) and owned by my ...
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1answer
39 views

Using Menu key as modifier in X

I would like my Menu key (keycode 135) to act both as the regular context menu key when pressed alone, and also to have it emulate my XF86Audio* multimedia keys when used as a modifier, e.g. Menu+PgUp ...
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1answer
108 views

Prevent xrandr scaling from becoming blurry

I am attempting to connect a laptop with a LVDS1 resolution of 1366x768 to a HDMI1 resolution of 1920x1080 (hardware that HDMI1 is connected to is a 4k Samsung TV). I am trying to clone my laptops ...
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1answer
16 views

Kitty X11 forwarding error

I used to use Kitty X11 forwarding by simply launching a GUI application from the command line. This used to simply start a new program in my windows taskbar which would behave similar to windows ...
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41 views

My Debian install gives me black screen on start up - it's a quick fix but it happens every time

My issue is a bit strange. I am running Debian GNU/Linux Testing Buster, and I'm very happy with it. However, it has one minor but persistent issue that I can't seem to figure out. Each and every time ...
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2answers
5k views

How to trick a program into thinking there is no X server running

I have this program that can run with both a text user interface and a graphical user interface. It lacks any command line switch to force one or the other, rather I guess it somehow auto-detects ...
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2answers
29 views

How to configure ssh to allow specifying a hostname/IP in DISPLAY variable?

I have an old application I'm trying to run on CentOS6 that uses a couple machines: abc1 and abc2. I log into abc1 and run the application, which ssh's to abc2, changes the DISPLAY variable to abc1:0....
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68 views

CentOS 7, VirtualBox, openmpi installation breaking GUI. Why? [closed]

I have a case where my installation of CentOS 7, hosted by a Windows 7 machine through an Oracle VM VirtualBox, is having its GUI installation crippled* by: yum install openmpi openmpi-devel In what ...
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1answer
39 views

X11 forwarding does not work if su to another user

I have a Red Hat 7.3 server running XVnc. On a Windows 10 desktop I have Putty and Xming installed. Putty is configured for X11 forwarding. When I SSH in as my standard/non-privileged user and ...
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1answer
56 views

Clear specific X buffer directly, without going through xsel or xclip

I am trying to completely disable middle-click for pasting from a buffer, using Radivarig's solution. Place this in ~/.xbindkeysrc "echo -n | xsel -n -i; pkill xbindkeys; xdotool click 2; ...
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1answer
61 views

Disable X11 window

I'm using wine (WineHQ) on a Ubuntu server to run a Windows program that pops up a window (just for status update, nothing clickable). In Wine, that is done by X11 forwarding. I'd like to disable ...
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0answers
168 views

X11 over ssh error: can't open display

I have a desktop and a server both running CentOS 7.5 and I run ssh -X from desktop to the server. After connection is made ~/.Xauthority file is written and I have $ echo $DISPLAY localhost:10.0 $ ...
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1answer
20 views

Firefox curly quotes broken in Helvetica, but not most other fonts and not in other apps?

In Firefox only (LibreOffice and Chromium work fine), and starting fairly recently, I've noticed Helvetica is rendering weirdly. Curly quotes are broken, but straight ones are not. Some further ...
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2answers
131 views

Get list of screen in display

I understand that a screen is identified by :D.S where: D is the display number S is the screen number I'm looking to list all screens associated with a display. I can get all the current displays ...
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18 views

keyboard : third level characters from language input ubuntu linux 18.04

linux ubuntu 18.04 : keyboard for language input problem : The default 'basic' (in my case English (US) ) seems to take priority over other language layouts for third level characters. If the ...
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1answer
84 views

Calibrating a touch-screen on dual monitors (one touch one not)

I am using Debian 9. I have a little PC with 2 in-built monitors that I intend to use as a point of sale. It has one monitor facing the customer (non-touch screen) and one facing the cashier (touch ...
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1answer
55 views

Xorg won't load/consider a driver that is present in /usr/lib/xorg/modules/drivers/

Here are the drivers I have present on the system. ls -l /usr/lib/xorg/modules/drivers/ total 598 -rwxr-xr-x 1 root root 114176 Sep 10 12:43 ast_drv.so -rwxr-xr-x 1 root root 23552 Sep 10 12:43 ...
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82 views

X11 linux apps in xming - how to fix font and size?

I'm running LiClipse (a version of Eclipse IDE targeted at Python development) on a remote CentOS 7 host with X11 forwarding to xming on Windows 10. The application starts up fine, but the fonts are ...
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1answer
196 views

st terminal: copy on select and right mouse click to paste

https://st.suckless.org/patches/clipboard/ makes mousewheel to select and paste but I need copy on select of left mouse and then right mouse click to paste. and to extend, ctrl-v to paste. I use ...