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Questions tagged [xephyr]

33 questions
8
votes
1 answer

How does one run GNOME Shell in a window? (nested session)

I am running GNOME Shell under Wayland and I would like to debug extensions in a nested session so that I don't have to restart the compositor, how can I do that?
Scrooge McDuck
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7
votes
1 answer

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+Shift_L, Xephyr grabs my input (mouse, keyboard). This grab can be released with Control_R+Shift_R, as in API documentation for awesome, a…
Michael Boies
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6
votes
2 answers

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 startx /usr/bin/openbox-session -- :1 (and :2, :3, :4…
Konstantinos
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5
votes
1 answer

Mouse and keyboard not getting captured by Xephyr

So, I started a Xephyr window: Xephyr -br -ac -noreset -screen 1280x720 :1 and then started xfce4 inside of that Xephyr X server: Export DISPLAY=:1 startxfce4 This all works fine, but now I want to get my cursor and mouse inside of that Xephyr X…
TT-392
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4
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2 answers

How to launch Xephyr without sleep-ing

The goal is to launch Xephyr in a script. The most popular approach is this: Xephyr :4 & sleep 1 # or sleep 2 launch_your_program_here Let's see what happens here. First, unfortunately, Xephyr cannot daemonize itself, so we have to launch it…
VasyaNovikov
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4
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3 answers

Xephyr: keyboard mapping not working properly

When I start Xephyr and LXDE session inside: $ Xephyr :1 -screen 1920x1054 -nolisten tcp -reset -terminate $ DISPLAY=:1 startlxde some keys are not working properly, such as Up, PageUp, PageDown. Looking with xev, I see very funny key…
Martin Vegter
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3
votes
1 answer

Almost multiseating with Xephyr

With swaywm I'm almost multiseating (two people simultaneously using the same computer) with two keyboards, two mice and one GPU with two outputs. At the start of the sway session, one nested X session is opened with Xephyr querying the localhosts…
igorkattar
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3
votes
1 answer

Xephyr: server does not have extension for -dpms option

when I open new openbox session in Xephyr, the screen goes blank after 10 minutes of inactivity. How can I disable this ? I tried this command: xset -dpms s off but get following error: server does not have extension for -dpms option
400 the Cat
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3
votes
1 answer

Xephyr: Low FPS inside 3D accelerated games

I'm trying to use Xephyr to create a gaming multiseat setup. Inside the existing desktop environment, I'm running sudo Xephyr -softCursor -dpi 96 -screen 1440x900 -keybd…
simplegamer
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3
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1 answer

Xephyr: mouse does not move smoothly

I am using xserver-xephyr in Debian Wheezy. My mouse inside the Xephyr window does not move smoothly. It looks as if the refresh rate was very low. When I move my mouse across the screen, it maybe refreshes 3 times. This looks more like the cursor…
Michael Boies
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3
votes
0 answers

setting up nested X sessions with Xephyr properly (and securely)

I am trying to set up Xephyr properly and securely, so that I can run another (nested) instance of LXDE under a different user inside my primary LXDE session. I would like to use this nested session to browse potentially dangerous (malicious)…
Martin Vegter
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2
votes
1 answer

What's the difference between Xpra and Xephyr?

I'm curious as to which of the two is the more tested and generally approved way of sandboxing X11. Both are available in my distributions official repository, but I don't know which one I should choose. Any suggestions?
user431715
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2
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2 answers

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 another. Most articles suggest doing this using scripts…
Dstart
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2
votes
1 answer

High CPU usage inside Xephyr and Xvnc

I have a GUI application that I want to test in parallel by running my tests in different X-servers. To do that I start the application using Xephyr or Xvnc, then I start the script to do the testing, and it works. The problem I am having is that…
klaus
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2
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0 answers

Xephyr - Two Displays as extended view

I have a wide monitor and I would like to use Xephyr or any other option to create two displays as extended view. Why? I use to connect to a remote server (RDP) that has two monitors and I am able to see only one remote screen, but if I use two…
Emerson Soares
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