Questions tagged [xephyr]

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43 views

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 ...
0
votes
1answer
37 views

-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.
1
vote
1answer
114 views

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 ...
0
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0answers
23 views

starting Xephyr server with auth for some other user

I have a situation where user0, with access to display :0 on the localhost, needs to run Xephyr :1 such that this Xephyr server is only accessible to user1 clients on the localhost. Is this ...
0
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0answers
209 views

Increase FPS in new X display

I am trying to run an application in a different 'fake' X display, but I noticed that the performance (FPS) of the application if much smaller than in my original X display. I tried to use Xephyr, ...
2
votes
1answer
103 views

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, ...
0
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0answers
317 views

Xephyr and xorg process

I run Xephyr:Xephyr -ac -screen 1024x768 -br -reset -terminate 2> /dev/null :1 & and then I can run there some window: export DISPLAY=:1 xterm & When I check xorg processes ps ax | grep ...
2
votes
0answers
119 views

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 ...
2
votes
1answer
1k views

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 evdev,,device=/dev/input/by-id/...
4
votes
2answers
345 views

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 ...
3
votes
3answers
1k views

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. ...
3
votes
2answers
385 views

qt4 applications don't work in Xephyr

I am using Xephyr to run applications as another user, while being logged in as primary user. Most applications work fine in Xephyr, except qt4 based. Specifically: electrum ipython qtconsole ...
3
votes
2answers
2k views

Running more than one console X session with startx at the same time

I have xfce running in display 0 (accessible via Ctrl + Alt + F1). I press Ctrl + Alt + F2 and type startx (attempting to run more than one window manager at the same time) and receive the error "...
3
votes
1answer
897 views

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 ...
5
votes
1answer
4k views

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+...
3
votes
0answers
811 views

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 ...
6
votes
2answers
2k 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 ...
1
vote
1answer
933 views

X11 forwarding over ssh [closed]

I used to log into a remote server on our corporate network using Xephyr and ssh using the following command Xephyr :0 -ac -br -screen 950x540 | xterm -bg black -fg white -display :0 -e ssh -Yf ...
1
vote
0answers
269 views

Xephyr Resolution Issue

Whenever I try to connect to Ubuntu using Xephyr, I always get it with the resolution set to 1600x1200, even though, I specified the switch -screen 1024x768 when running it. Questions Where is the ...