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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Conditionally swap keys on a keyboard (Debian, X11, KDE Plasma)

I have this keyboard layout on my Dell Latitude It really grinds my gear that the Home and End Keys are mapped to the composite Fn key. So I managed to swap PageUp with Home and PageDown with End by ...
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Keyboad key wrongly interpreted by X server. How should I go about investigating this?

I have Kubuntu 19.10, running i3wm with Plasma, on my ASUS FX505DT. I noticed weird behaviour today. Pressing Fn + F9 on my keyboard is registered as keycode 33 "p", which should actually be ...
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X11: swap key with mouse button

I want my Menu key to do the same as my right mouse button. https://superuser.com/questions/336674/emulating-mouse-click-with-a-keyboard does that but it sacrifices the numpad region on my keyboard, ...
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Initiate a new (X11) desktop session on a remote host

I would like to initiate a new (X11) desktop session on a remote host (let’s say for ‘exporting’ the session with x11vnc). At first, I tought this would be as easy as it is on the local host: $ xinit ...
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How to prevent XF86RFKill keypress from enabling Linux's airplane mode?

I am running Kubuntu 19.10(KDE + i3wm) on my ASUS FX505DT. The issue I am able to bind the XF86RFKill key using i3wm's bindsym but this binding doesn't seem to nullify's Linux's in-built binding ...
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How do I detect a call to Xorg to do screenshots?

X can do screen shots of the entire desktop. I'd like to detect these calls as they're made, but through something like ebpf or sysdig, rather than patching the calls at the server level. How can I do ...
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x11vnc of a virtual monitor does not work

I'm trying to configure an eink-screen Android tablet as an extra external monitor of my computer. Up to now, I configured an extra virtual screen for my computer by creating the file /usr/share/X11/...
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vgl/qt5 application only runnig if started as root

Recently I'm experiencing a very strange behavior on my workstation. If I start a vgl/qt5 application and I'm logged in as my default user the process seems to run (htop) but there's no gui-window ...
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Editing /etc/X11/xorg.conf to Fix xbrightness Break Other Applications

I am using i3 and trying to setup my media keys to control the screen brightness using xbrightness. By default, running things like xbrightness -set 50 or xbrightness -set 100 do nothing. After ...
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Multi screen remote desktop

I am looking for a solution (free or paid.) for our small company to improve the environment for working from home. (especially during this period) We have 3-4 monitors at the remote site (homes) and ...
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Background and top bar configurations does not apply at startup

I am on Manjaro Linux and using dwm. I have made some changes (additions) in my ~/.xinitrc file to have my wallpaper set and display date & time on top bar when I log in. But I cannot have these ...
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1answer
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Entire graphical session over ssh on Ubuntu 18.04

I sucessully connect on my ubuntu 18.04 (guest), on my host Ubuntu 18.04 (host). And I have used -X param on ssh connection to open graphical applications. But now I want to open an entire session ...
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Second Monitor detected but displays “No signal”

I'm trying to connect my Laptop (Mint 19.1) to a second monitor (EIZO) with a VGA (for the monitor) - HDMI (for the laptop) cable. The monitor is detected in the Display panel but it's showing "no ...
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xkb keyboard layout not showing up in trisquel and unity

I followed these instructions to form a keyboard layout which can be found here. Adding the keyboard-file to /usr/share/X11/xkb/symbols and adding the relevant information to /usr/share/X11/xkb/rules/...
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1answer
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How do I get cut-n-paste to work for remote X clients

I've ssh-ed into a Debian computer from a Ubuntu computer (via an intermediate computer) and have problems getting cut-n-paste to work. Neither can I select text and insert that using middle-click. ...
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How to refresh a gtk gui?

After changing Xft.dpi: 96 to Xft.dpi: 192 in ~/.Xresources I run xrdb -merge ~/.Xresources to enjoy a readable font size in Firefox on a 4K Monitor. However, I must kill and restart Firefox to do so. ...
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Shared clipboard between multiple X11 servers (Xephyr, Xpra etc.)

I plan to run potentially dangerous applications (browser, etc.) on a separate X-server, but since each server has its own clipboard, it is impossible to copy the link / text from one window to ...
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Is X11 dangerous?

I'm new to X11 and want to understand if it is really as dangerous as they say on the Internet. I will explain how I understand this. Any application launched from under the current user has access ...
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Multi monitor window artifacts on one monitor

Running Debian Jessie. Distro is Crunchbang ++, which is just debian with openbox. This is happening on multiple systems. It seems with multiple monitors and an odd layout I get terrible artifacts ...
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Minimalist X11 tool for night light

I'm running OpenBox on a Debian 10 Buster system and I'm looking for a simple minimalist command line tool to toggle night light (as in Ubuntu). Any suggestions?
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X11 crashing on login (Arch ARM)

I am using Arch Linux on a Chromebook C201 (ARM). Since I recently upgraded the system, the desktop environment seems to be crashing shortly after I login (before the upgrade it was working fine). I ...
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1answer
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How might we configure X (and other settings) to boot to a graphical CentOS 7 terminal with Nvidia driver using 4k @ 60hz

While setting up a Ryzen 3990X, Nvidia Quadro RTX 4000, 256GB DDR4, CentOS 7 machine: Monitor : dell up2414q Background : After properly installing CentOS 7 via USB key I was able to login to the ...
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Is it possible to start an X11 program on a particular desktop

Commands like wmctrl and xdotool allow: Switching the current desktop Moving a running X Windows program to another desktop I'd like to know whether it's possible to start an X11 program such that ...
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Xpdf & narrow window: Expand Toolbar and/or focus on `find` box?

I amd using Cygwin's Xpdf reader version 4.02. When the window is narrow (half my laptop screen), the toolbar is not wide enough to show the find entry box: However, there is a double-carat button ...
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How can I rotate Ubuntu 16.04 screen in ssh [duplicate]

xrandr -o left isn't working. It displays Can't open display. I tried to find config, but screens have different device ids. What if I want many screens to rotate same rotation?
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Unable to use X11 Forwarding between Windows (WSL) and Linux

I am having issues with X11 forwarding between a Windows 10 system using WSL and a Ubuntu 19 system. To clarify, I am wanting to connect to the Ubuntu server (LNX) from the Windows 10 system (WIN). ...
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run startx on yoctost-example-image-x11 image on stm32mp157 device

I want to use SDL2 to run some application on X11. I build st-example-image-x11 and when LDME service started I can run startX and run my application. I want turn off LDME manager and only run ...
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Bind key to paste clipboard selection

My keyboard has a Menu key, when it's pressed I want to paste from CLIPBOARD selection (not PRIMARY). I have got something working using sxhkd, xvkbd, and xsel: Menu xvkbd -no-jump-pointer -...
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Is it possible to hack the X feature 'mousekey' mode to keep numeric keypad ? (finger impairment)

all solutions I know to use some keyboard keys to use the mouse buttons instead of the mouse clicks are based on the X feature mousekeys : https://unix.stackexchange.com/a/571601/12574 https://unix....
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Xephyr cannot open host display. Is DISPLAY set?

I' try to play with Xephyr under tty: $ DISPLAY=:0 Xephyr -ac -screen 800x600 -host-cursor Xephyr cannot open host display. Is DISPLAY set? As u can see, DISPLAY has been set, but Xephyr still ...
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How to type `@` by `alt-q` but retain all other alt+key combinations in X11, maybe with `xkb`?

Is it possible to configure the keyboard for all X11 applications in a way that typing alt-q yields @ but all other alt+key typings yield alt+key, e.g., typing alt-w yields alt-w etc. ? I managed ...
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-dpi option of Xephyr

What does the -dpi option of Xephyr do. I'm trying different values like this: Xephyr -dpi 20 -screen 640x480 :1 and the programs running in the session don't look different in any way.
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Xephyr -ac dangerously?

Classic command to run Xephyr: Xephyr -br -ac -noreset -screen 800x600 :1 As far as I understand, the -ac key is an analogue of xhost +, and this is a vulnerability, because almost everyone can ...
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Creating Virtual Monitors that I can turn on and off at will and that KDE can manage like any real external monitor

I'd like to create a Virtual Monitor that works like a real one. I'd like to be able to connect and disconnect it when I wish and to configure it using KDE System Settings: change its position/...
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1answer
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X11 Forwarding issues

I'm trying to ssh into a remote computer, set the display to the remote computer, then open a window. Any window at all - it doesn't matter, but I'm trying to open an xterm window for testing purposes....
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Linux Mint: Can't open display

I recently upgraded my system from Linux Mint 18.3 to Linux Mint 19. After upgrade I can't login to XFCE session. After entering password on the login screen, the screen goes black and a message is ...
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1answer
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How to Run Graphical Programs on a Remote Ubuntu System Connected with VPN to the Windows Machine?

I connected to my Mint18 (Ubuntu 16.04) system remotely from my windows10 machine with Putty. The internet connection is provided with a Wi-Fi and a VPN connection. I name, here, the IP address for ...
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Prevent application from changing the window layer

I'm running Debian 10 with fluxbox. I have an application where the window layer keeps changing to "Above dock", despite me checking "Remember..." "Layer". This layer change seems to happen randomly. ...
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2answers
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Dual X screens on one device

I am using ubuntu mate 18.04 I believe it uses lightdm as display manager. I have 2 monitors connected to the same device (intel hd onboard graphics, with 2 ports, one HDMI, one VGA). Because of the ...
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Forwardability of graphical interfaces over network

This is a curiosity question. The various official documents (for X11, Wayland, etc.) don't aggregate the information well, so I'm hoping we could get a good answer here and I'll try to ask it well. ...
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Linux screen capture on multiple X screens

We have a test system with 5 physical monitors. These are arranged/configured to be separate XWindows "Screens". That is, the $DISPLAY would be something like: "0.1", "0.2", ... etc. (So the monitors ...
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Can we share an application window among different users/X servers?

We have a family machine with KDE, where each member has a different account. Mom, dad and children. There are a few applications we'd like to be shared in such a way that they be available to all ...
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1answer
60 views

Display xvfb output in remote PC

I have a Windows pc that I use to connect to my Ubuntu PC over ssh that I use as a server (18.04) that is connected only to the internet and power (No monitor). When I run glxgears -info I only get 8-...
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Debugging a missing monitor in Xrandr?

I'm running Gentoo Linux with a 4.19.97 kernel and the nouveau drivers on a laptop with an NVIDIA GeForce GTX 960M rev a2 (according to lspci). There's an HDMI output port which I usually plug into an ...
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Old default key bindings for xpdf reader?

I recently upgraded my 2015 Cygwin installation to 2020. The xpdf (reader) is version 4.02-1. All the key bindings are different or gone. I read up on key bindings for the xpdfrc file. Rather than ...
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Difference in NumPad processing in Linux vs Windows

On my Windows 8.1 machine if NumLock is ON and I press Shift+KP_1 Then KP_1 acts as KP_End as it logically should. But in Linux(Manjaro/Fedora/Ubuntu/MX Linux) if NumLock is ON and I press Shift+...
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How to replace program running in graphical terminal with another program?

Lets say I have top or some ncurses program running in a graphical terminal, and from outside this terminal I'd like to execute a command, that would replace top with another program of my choosing. ...
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.xinitrc seems to be ignored if /usr/bin/xinit is called from systemd service

This is on Xubuntu 18.04. I'm trying to replace lightdm with my own application running full screen on boot up. I can run xinit from root shell, and it correctly takes my /root/.xinitrc commands and ...
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Controlling terminal of a display server

When I login on a Fedora 31 workstation and run the ps command, I see the below output; for an X session: PID TT CMD ... 1 ? /usr/lib/systemd/systemd --switched-root --system --deserialize ...
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How to run Xfce on fresh Kali instsallation

I'm failing to get a new Kali linux OS, with a working Xfce windows manager. I'm able to make a bootable USB, then install Kali on my system. I downloaded the Kali Linux 64-Bit (Installer) (Version: ...

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