Ssh error no display environment variable specified

Решено: Как задать экран на удаленном компьютере?

Модератор: Bizdelnick

ssh ishtar.sao.ru
...
echo $DISPLAY
localhost:10.0

 $ dpkg -l | grep ssh
ii  openssh-client    1:5.5p1-6     secure shell (SSH) client, for secure access to remote machines
ii  openssh-server    1:5.5p1-6     secure shell (SSH) server, for secure access from remote machines

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Решено: Как задать экран на удаленном компьютере?

Модератор: Bizdelnick

Решено: Как задать экран на удаленном компьютере?

Сообщение pavlar » 23.02.2011 09:38

$ firefox
Error: no display specified
alabama@ubuntu:

Как задать экран?

Re: Решено: Как задать экран на удаленном компьютере?

Сообщение Shura » 23.02.2011 11:37

Re: Решено: Как задать экран на удаленном компьютере?

Сообщение pavlar » 23.02.2011 12:35

$ export DISPLAY= :0; firefox
-bash: remote: Нет такого файла или каталога
Error: no display specified

Re: Решено: Как задать экран на удаленном компьютере?

Сообщение eddy » 23.02.2011 12:38

Re: Решено: Как задать экран на удаленном компьютере?

Сообщение pavlar » 23.02.2011 12:44

$ ssh -X alabama@192.168.1.5
alabama@192.168.1.5’s password:
Linux ubuntu 2.6.35-22-generic-pae #33-Ubuntu SMP Sun Sep 19 22:14:14 UTC 2010 i686 GNU/Linux
Ubuntu 10.10

79 packages can be updated.
46 updates are security updates.

Last login: Wed Feb 23 14:42:48 2011 from pol.local
alabama@ubuntu:

$ firefox
Error: no display specified
alabama@ubuntu:

Re: Решено: Как задать экран на удаленном компьютере?

Сообщение eddy » 23.02.2011 12:44

Re: Решено: Как задать экран на удаленном компьютере?

Сообщение pavlar » 23.02.2011 12:48

Источник

Arch Linux

You are not logged in.

#1 2015-12-20 17:03:46

[Solved] Firefox, Error: no display specified

I’ve been trying to use arch Linux a few times now so I don’t know that much yet.
Now I’m stuck with a problem that is probably relatively simple but confuses me a lot.

I want to add a ssh key to my GitHub account. So I installed Firefox.
The problem is that Firefox won’t start up.

when I type:
Firefox

I get:
Error: no display specified

I installed Arch on a USB stick.
The error happens when logged in as a user and also when logged in as root.

I don’t know what to do with this error. I’ve searched the internet but I couldn’t find an explanation.

Can anyone help me further?

Last edited by UnfortunatelyPeanutbutter (2015-12-23 09:14:22)

#2 2015-12-20 17:11:54

Re: [Solved] Firefox, Error: no display specified

Are you running a Xorg and a Windows manager? Who is logged on (a user or root)?

Nothing is too wonderful to be true, if it be consistent with the laws of nature — Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. — Alan Turing
—
How to Ask Questions the Smart Way

Online

#3 2015-12-20 17:12:07

Re: [Solved] Firefox, Error: no display specified

Because the DISPLAY env var does not exist in your shell somehow.

Last edited by tom.ty89 (2015-12-20 17:12:29)

#4 2015-12-20 17:14:51

Re: [Solved] Firefox, Error: no display specified

Please edit your first post and use a title that actually reflects your issue: https://wiki.archlinux.org/index.php/Fo … ow_to_post

Then include details of your setup: how you login, what you login to, etc.

Registered Linux User #482438

#5 2015-12-20 19:43:35

Re: [Solved] Firefox, Error: no display specified

Are you running a Xorg and a Windows manager? Who is logged on (a user or root)?

I tried using a display manager(SDDM) in the hope it would get me a display.
However I can’t login and now type: ctrl + alt + f2 to get the TUI and then log in.
The error also happened before I installed SDDM.

I installed Xorg but I don’t know if it’s running. How can I find out if I am?
Is running a display server necessary?

No I’m not using a Windows manager.
The error occurs when logged in as user and also for root.

How is the DISPLAY env var related to the actual display (the one I read the error message from)?

Last edited by UnfortunatelyPeanutbutter (2015-12-20 19:50:07)

#6 2015-12-20 20:39:03

Re: [Solved] Firefox, Error: no display specified

From what I understand the DISPLAY env var is actually some way to tell programs where X is.

Are you saying you’re trying to run firefox on a console directly? How can you not know whether X is running? Also in my example above: pgrep

#7 2015-12-20 20:51:10

Re: [Solved] Firefox, Error: no display specified

I tried using a display manager(SDDM) in the hope it would get me a display.
However I can’t login and now

What happens when you try to log in?

Is running a display server necessary?

Not sure what you mean here, you need to run the X server but you don’t need a display manager or a window manager or desktop environment to just run firefox.

#8 2015-12-20 21:48:15

Re: [Solved] Firefox, Error: no display specified

HoaS is right, you don’t need a Windows Manger. Nor do you need a Display Manager.
But, what are we trying to do here? Most users want some sort of desktop environment or window manager to provide a traditional GUI environment. Openbox, Gnome, Kde, i3wm, whatever. Then you launch Firefox from that environment and off you go.
A display manager allows you to log in through a GUI screen giving a warm-and-fuzzy Windows feel. They also cause much hardship and provide little in return; kind of like a tribble.
HoaS implied you can start an Xserver without a windows manager and just use Firefox full screen. True, but I doubt that is what you want. It is a rather specialized use case.
Yes. You do need an Xorg server.

My strong suggestion would be to get a simple graphical environment set up following this article: https://wiki.archlinux.org/index.php/Xorg
Don’t use follow the instructions about how to use a display manager, follow the instructions on how to start it manually (In other words, follow the link to Xinitrc. Once you have a working Xorg environment, firefox will «just work»

Edit: Fixed typo

Last edited by ewaller (2015-12-21 14:57:46)

Nothing is too wonderful to be true, if it be consistent with the laws of nature — Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. — Alan Turing
—
How to Ask Questions the Smart Way

Online

#9 2015-12-21 14:31:54

Re: [Solved] Firefox, Error: no display specified

I tried using a display manager(SDDM) in the hope it would get me a display.
However I can’t login and now

I can’t get past the greeter.
When I enter my password in the greeter and press enter or click everywhere like a madman, nothing happens.
journalctl says sddm fails to read from «/var/lib/sddm/.desktop»

I now disabled sddm and can use tty1 as normal again

#10 2015-12-21 15:03:18

Re: [Solved] Firefox, Error: no display specified

Okay. I also presume you have Xorg server installed because you were using sddm.
Are you logged in as a normal user, or are you using root? If you are using root, stop it.
Have you installed xorg-init, xorg-clock and xterm as indicated in the link I provided?
Do you have a

/.xinitrc file? Let’s get things working first without one.
What happens when you run startx ?

Last edited by ewaller (2015-12-21 15:03:43)

Nothing is too wonderful to be true, if it be consistent with the laws of nature — Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. — Alan Turing
—
How to Ask Questions the Smart Way

Online

#11 2015-12-21 15:41:17

Re: [Solved] Firefox, Error: no display specified

From what I understand the DISPLAY env var is actually some way to tell programs where X is.

Are you saying you’re trying to run firefox on a console directly?
How can you not know whether X is running?
Also in my example above: pgrep

I want to use Firefox to go to a website and enter some information.
I have no need for a traditional GUI environment I already got windows for that.
I’m now in console (Command-line interface).

Part of the current problem I guess is that all the information and all the definitions are confusing me.
This is what I know so far.

display = 1. a performance, show, or event staged for public entertainment.
2. an electronic device for the visual presentation of data or images.
I guess in this context the second definition is the relevant one.

display manager = login manager = log in through a GUI screen.
What does this have to do with the actual display?

window manager = controls the placement and appearance of windows within a windowing system in a graphical user interface.

server = a computer or computer program which manages access to a centralized resource or service in a network.

display server = window server = a program whose primary task is to coordinate the input and output of its clients to and from the rest of the operating system, the hardware, and each other.

X =? Xserver =? Xorg = the most popular display server among Linux users.

when looking at the definition of server, is the display the centralized resource of a display server? and the network is that the computer itself?
Does that make Firefox a display client?

edit:
I installed xorg-clock and xterm.
I installed xorg-xinit instead of xorg-init.

Now when i type startx three white textboxes appear and a clock in the upper right corner of my second display screen.

That’s a start.

edit2: when I type Firefox into the white box it actually works. =O

Last edited by UnfortunatelyPeanutbutter (2015-12-21 16:29:19)

Источник

Проблема с display и firefox

Приветствую жителей форума, я со своего компьютера захожу на другую машину дабы с неё запустить FF у себя,
но проблема в том, что в консоли у меня пишется, что display не указан

Почитай хоть что-нибудь про Х-ы и роль переменной DISPLAY

Я читал, попробовал вот как здесь написано — ноль результатов (читал не только там, но всё равно не работает).

Показывай команды которые даешь на обеих системах.

И возможно ssh -X решит твои проблемы без понимания сути процессов.

со своего компьютера захожу на другую машину

Приветствую жителей форума, я со своего компьютера захожу на другую машину дабы с неё запустить FF у себя, но проблема в том, что в консоли у меня пишется, что display не указан

дык укажи. И пробросить его не забудь, дабы иксы с одной машины, работали на другой.

-X Enables X11 forwarding. This can also be specified on a per-host basis in a configuration file.

X11 forwarding should be enabled with caution. Users with the ability to bypass file permissions on the remote host (for the user’s X authorization database) can access the local X11 display through the forwarded connection. An attacker may then be able to perform activities such as keystroke monitoring.

For this reason, X11 forwarding is subjected to X11 SECURITY extension restrictions by default. Please refer to the ssh -Y option and the ForwardX11Trusted directive in ssh_config(5) for more information.

И пробросить его не забудь, дабы иксы с одной машины, работали на другой.

Источник

Error: no DISPLAY environment variable specified #5959

• General result
  Web browser doesn’t get opened

The text was updated successfully, but these errors were encountered:

Reproduced on same OS and rpcs3-v0.0.6-8094-22f61caf_linux64.AppImage

can you guys click the patreon link in the «About» window ?

And how about «Check compatibility» in the game list?

None of those blue links work for me, same error in the console.

RPCS3: Fatal Error ‘s window with «How-to-ask-for-Support» link, and all the links in the «Welcome» dialog.

I’m sorry, I can’t seem to find a way to test «Check compatibility» within game list, don’t really have any games, just interested in the UI and the software you’re working on.

Same here with rpcs3-v0.0.6-8094-22f61caf_linux64.AppImage. Ubuntu 19.04.

EDIT: Got a segfault dialog playing and noticed the same issue there with the github link.

Linux Mint 19.1 ( Ubuntu 18.04 based )

Behaviour: Installing game updates then exiting from emulator triggers that behaviour. Result is ; update didn’t applied ( at least according to GUI ) at all.

Behaviour: Dowloading compability database also triggers same behaviour. In both cases ; segfault message is only visible when exiting emulator.

No one tested the «Check game compatibility» for a game yet

«Check game compatibility» works without problems for me.

Same goes for links at » About Rpcs3 » section.

Things doesn’t work ( but no segfaults ) :

1-) Open install folder
2-) Open custom config folder

There is zero response but there are no errors either.

Are you guys running in Wayland?

It would explain DISPLAY not being set, and Qt having problems choosing a browser to open in.

Not me, just plain default installation of Ubuntu Desktop x86_64 18.04.2 LTS + latest updates, which uses gnome-shell under Xorg.

That is only about default; someone could still be using wayland if they choose to.
More relevant, I just tried the check game compat and got the same error.

Xorg here as well.

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