gksu: Gtk-WARNING **: cannot open display: :0












33















All of the sudden gksu stopped working for me:



~$ gksu gparted

(gpartedbin:24252): Gtk-WARNING **: cannot open display: :0


The same happens with gparted-pkexec:



~$ gparted-pkexec 
No protocol specified

(gpartedbin:25454): Gtk-WARNING **: cannot open display: :0


What could possibly be causing this?



I am not running this through SSH or VNC. This is localhost in a normal terminal window.










share|improve this question

























  • You do not work in a graphical user interface or trying to run a program on a system (eg. via ssh) that no graphical interface provides.

    – A.B.
    Apr 26 '15 at 16:50











  • @A.B. I should clarify that this is not via ssh. It's on local host in a very normal terminal window. Infact opening gparted from the application menu has the same result.

    – d_inevitable
    Apr 26 '15 at 16:53











  • You shouldn't have to use gksu to run GParted. gparted uses polkit to get elevated privileges.

    – muru
    Apr 26 '15 at 16:59











  • @muru when I run gparted without gksu I get Root privileges are required for running gparted.

    – d_inevitable
    Apr 26 '15 at 17:17











  • Ok, try gparted-pkexec (without gksu) or gksu gpartedbin.

    – muru
    Apr 26 '15 at 17:39
















33















All of the sudden gksu stopped working for me:



~$ gksu gparted

(gpartedbin:24252): Gtk-WARNING **: cannot open display: :0


The same happens with gparted-pkexec:



~$ gparted-pkexec 
No protocol specified

(gpartedbin:25454): Gtk-WARNING **: cannot open display: :0


What could possibly be causing this?



I am not running this through SSH or VNC. This is localhost in a normal terminal window.










share|improve this question

























  • You do not work in a graphical user interface or trying to run a program on a system (eg. via ssh) that no graphical interface provides.

    – A.B.
    Apr 26 '15 at 16:50











  • @A.B. I should clarify that this is not via ssh. It's on local host in a very normal terminal window. Infact opening gparted from the application menu has the same result.

    – d_inevitable
    Apr 26 '15 at 16:53











  • You shouldn't have to use gksu to run GParted. gparted uses polkit to get elevated privileges.

    – muru
    Apr 26 '15 at 16:59











  • @muru when I run gparted without gksu I get Root privileges are required for running gparted.

    – d_inevitable
    Apr 26 '15 at 17:17











  • Ok, try gparted-pkexec (without gksu) or gksu gpartedbin.

    – muru
    Apr 26 '15 at 17:39














33












33








33


16






All of the sudden gksu stopped working for me:



~$ gksu gparted

(gpartedbin:24252): Gtk-WARNING **: cannot open display: :0


The same happens with gparted-pkexec:



~$ gparted-pkexec 
No protocol specified

(gpartedbin:25454): Gtk-WARNING **: cannot open display: :0


What could possibly be causing this?



I am not running this through SSH or VNC. This is localhost in a normal terminal window.










share|improve this question
















All of the sudden gksu stopped working for me:



~$ gksu gparted

(gpartedbin:24252): Gtk-WARNING **: cannot open display: :0


The same happens with gparted-pkexec:



~$ gparted-pkexec 
No protocol specified

(gpartedbin:25454): Gtk-WARNING **: cannot open display: :0


What could possibly be causing this?



I am not running this through SSH or VNC. This is localhost in a normal terminal window.







xorg sudo gtk gksu pkexec






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Apr 27 '15 at 4:55









Mark Paskal

2,65411827




2,65411827










asked Apr 26 '15 at 16:39









d_inevitabled_inevitable

1,15421635




1,15421635













  • You do not work in a graphical user interface or trying to run a program on a system (eg. via ssh) that no graphical interface provides.

    – A.B.
    Apr 26 '15 at 16:50











  • @A.B. I should clarify that this is not via ssh. It's on local host in a very normal terminal window. Infact opening gparted from the application menu has the same result.

    – d_inevitable
    Apr 26 '15 at 16:53











  • You shouldn't have to use gksu to run GParted. gparted uses polkit to get elevated privileges.

    – muru
    Apr 26 '15 at 16:59











  • @muru when I run gparted without gksu I get Root privileges are required for running gparted.

    – d_inevitable
    Apr 26 '15 at 17:17











  • Ok, try gparted-pkexec (without gksu) or gksu gpartedbin.

    – muru
    Apr 26 '15 at 17:39



















  • You do not work in a graphical user interface or trying to run a program on a system (eg. via ssh) that no graphical interface provides.

    – A.B.
    Apr 26 '15 at 16:50











  • @A.B. I should clarify that this is not via ssh. It's on local host in a very normal terminal window. Infact opening gparted from the application menu has the same result.

    – d_inevitable
    Apr 26 '15 at 16:53











  • You shouldn't have to use gksu to run GParted. gparted uses polkit to get elevated privileges.

    – muru
    Apr 26 '15 at 16:59











  • @muru when I run gparted without gksu I get Root privileges are required for running gparted.

    – d_inevitable
    Apr 26 '15 at 17:17











  • Ok, try gparted-pkexec (without gksu) or gksu gpartedbin.

    – muru
    Apr 26 '15 at 17:39

















You do not work in a graphical user interface or trying to run a program on a system (eg. via ssh) that no graphical interface provides.

– A.B.
Apr 26 '15 at 16:50





You do not work in a graphical user interface or trying to run a program on a system (eg. via ssh) that no graphical interface provides.

– A.B.
Apr 26 '15 at 16:50













@A.B. I should clarify that this is not via ssh. It's on local host in a very normal terminal window. Infact opening gparted from the application menu has the same result.

– d_inevitable
Apr 26 '15 at 16:53





@A.B. I should clarify that this is not via ssh. It's on local host in a very normal terminal window. Infact opening gparted from the application menu has the same result.

– d_inevitable
Apr 26 '15 at 16:53













You shouldn't have to use gksu to run GParted. gparted uses polkit to get elevated privileges.

– muru
Apr 26 '15 at 16:59





You shouldn't have to use gksu to run GParted. gparted uses polkit to get elevated privileges.

– muru
Apr 26 '15 at 16:59













@muru when I run gparted without gksu I get Root privileges are required for running gparted.

– d_inevitable
Apr 26 '15 at 17:17





@muru when I run gparted without gksu I get Root privileges are required for running gparted.

– d_inevitable
Apr 26 '15 at 17:17













Ok, try gparted-pkexec (without gksu) or gksu gpartedbin.

– muru
Apr 26 '15 at 17:39





Ok, try gparted-pkexec (without gksu) or gksu gpartedbin.

– muru
Apr 26 '15 at 17:39










3 Answers
3






active

oldest

votes


















52














If running Ubuntu 17.10 or newer, this issue can arise when an application has not been updated with full support for Wayland. As a workaround until the application is updated, you can run



xhost +SI:localuser:root


which will allow the root user to display applications on your desktop. Also see this Q&A for other possible workarounds: Why don't gksu/gksudo or launching a graphical application with sudo work with Wayland?



source






share|improve this answer


























  • @MDMower Thx for editing, learned something new =)!

    – Cutton Eye
    Dec 15 '17 at 7:46











  • @pomsky Thx for adding the link ;)!

    – Cutton Eye
    Feb 26 '18 at 10:49











  • In 18.04 X-Org will be used again as default. So this problem should vanis then. see

    – Cutton Eye
    Mar 7 '18 at 13:25



















11














Try running xhost +localhost in your terminal, and then running the command again. This lets all users on your system (i.e. root) open windows on your screen. Make sure to use +localhost and not simply +, as it's more secure to allow connections from only localhost than from anywhere.



To make this permanent, edit the ~/.xinitrc file like this:



Run gedit ~/.xinitrc



Edit the file to look like this (it should be empty at the start):



#! /bin/bash
xhost +localhost &


Now save the file, log out and log in. Now everything should run just fine with sudo.



I can't reproduce your problem on 14.04, but this has worked for me in the past when sudo / gksu threw this error.



Sources:




  1. http://www.nikhef.nl/~mjg/xhost_plus.html

  2. https://forums.opensuse.org/showthread.php/405624-sudo-doesnt-open-X-programs

  3. https://wiki.ubuntu.com/CustomXSession






share|improve this answer





















  • 1





    This does work indeed. So does that mean its an access control restriction? Any ideas what the cause of this could be?

    – d_inevitable
    Apr 27 '15 at 22:21











  • Yes, it's a security feature of X. It allows only connections from your user to the xserver until told otherwise, I think. I'm not super sure why it's required for some apps and not others, and I don't have a clue why it would be doing it for gparted of all things. Perhaps you were tinkering and tightened security somewhere?

    – Mark Paskal
    May 4 '15 at 0:16






  • 2





    This yields an error: xhost: unable to open display ""

    – IgorGanapolsky
    Jan 30 '17 at 18:33






  • 5





    On redis, it was suggested to use xhost +local:. After that I was able to launch gparted from the terminal, but using xhost +localhost didn't work.

    – rmin
    Sep 6 '17 at 1:40






  • 1





    Indeed! xhost +local: fixed mine! It yields non-network local connections being added to access control list which is what is needed.

    – lobner
    Nov 10 '17 at 8:16





















4














Execute the following in your terminal:



nano /home/user/.bashrc # user = name of your user


Add the following line at the end.



export XAUTHORITY=$HOME/.Xauthority





share|improve this answer





















  • 1





    Would be useful if you could add some explanation of how this solves the problem, and whether it has any adverse side effects?

    – Geoff
    Jan 1 at 23:25











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3 Answers
3






active

oldest

votes








3 Answers
3






active

oldest

votes









active

oldest

votes






active

oldest

votes









52














If running Ubuntu 17.10 or newer, this issue can arise when an application has not been updated with full support for Wayland. As a workaround until the application is updated, you can run



xhost +SI:localuser:root


which will allow the root user to display applications on your desktop. Also see this Q&A for other possible workarounds: Why don't gksu/gksudo or launching a graphical application with sudo work with Wayland?



source






share|improve this answer


























  • @MDMower Thx for editing, learned something new =)!

    – Cutton Eye
    Dec 15 '17 at 7:46











  • @pomsky Thx for adding the link ;)!

    – Cutton Eye
    Feb 26 '18 at 10:49











  • In 18.04 X-Org will be used again as default. So this problem should vanis then. see

    – Cutton Eye
    Mar 7 '18 at 13:25
















52














If running Ubuntu 17.10 or newer, this issue can arise when an application has not been updated with full support for Wayland. As a workaround until the application is updated, you can run



xhost +SI:localuser:root


which will allow the root user to display applications on your desktop. Also see this Q&A for other possible workarounds: Why don't gksu/gksudo or launching a graphical application with sudo work with Wayland?



source






share|improve this answer


























  • @MDMower Thx for editing, learned something new =)!

    – Cutton Eye
    Dec 15 '17 at 7:46











  • @pomsky Thx for adding the link ;)!

    – Cutton Eye
    Feb 26 '18 at 10:49











  • In 18.04 X-Org will be used again as default. So this problem should vanis then. see

    – Cutton Eye
    Mar 7 '18 at 13:25














52












52








52







If running Ubuntu 17.10 or newer, this issue can arise when an application has not been updated with full support for Wayland. As a workaround until the application is updated, you can run



xhost +SI:localuser:root


which will allow the root user to display applications on your desktop. Also see this Q&A for other possible workarounds: Why don't gksu/gksudo or launching a graphical application with sudo work with Wayland?



source






share|improve this answer















If running Ubuntu 17.10 or newer, this issue can arise when an application has not been updated with full support for Wayland. As a workaround until the application is updated, you can run



xhost +SI:localuser:root


which will allow the root user to display applications on your desktop. Also see this Q&A for other possible workarounds: Why don't gksu/gksudo or launching a graphical application with sudo work with Wayland?



source







share|improve this answer














share|improve this answer



share|improve this answer








edited Feb 21 '18 at 0:19









pomsky

31.3k1194127




31.3k1194127










answered Nov 29 '17 at 15:59









Cutton EyeCutton Eye

666310




666310













  • @MDMower Thx for editing, learned something new =)!

    – Cutton Eye
    Dec 15 '17 at 7:46











  • @pomsky Thx for adding the link ;)!

    – Cutton Eye
    Feb 26 '18 at 10:49











  • In 18.04 X-Org will be used again as default. So this problem should vanis then. see

    – Cutton Eye
    Mar 7 '18 at 13:25



















  • @MDMower Thx for editing, learned something new =)!

    – Cutton Eye
    Dec 15 '17 at 7:46











  • @pomsky Thx for adding the link ;)!

    – Cutton Eye
    Feb 26 '18 at 10:49











  • In 18.04 X-Org will be used again as default. So this problem should vanis then. see

    – Cutton Eye
    Mar 7 '18 at 13:25

















@MDMower Thx for editing, learned something new =)!

– Cutton Eye
Dec 15 '17 at 7:46





@MDMower Thx for editing, learned something new =)!

– Cutton Eye
Dec 15 '17 at 7:46













@pomsky Thx for adding the link ;)!

– Cutton Eye
Feb 26 '18 at 10:49





@pomsky Thx for adding the link ;)!

– Cutton Eye
Feb 26 '18 at 10:49













In 18.04 X-Org will be used again as default. So this problem should vanis then. see

– Cutton Eye
Mar 7 '18 at 13:25





In 18.04 X-Org will be used again as default. So this problem should vanis then. see

– Cutton Eye
Mar 7 '18 at 13:25













11














Try running xhost +localhost in your terminal, and then running the command again. This lets all users on your system (i.e. root) open windows on your screen. Make sure to use +localhost and not simply +, as it's more secure to allow connections from only localhost than from anywhere.



To make this permanent, edit the ~/.xinitrc file like this:



Run gedit ~/.xinitrc



Edit the file to look like this (it should be empty at the start):



#! /bin/bash
xhost +localhost &


Now save the file, log out and log in. Now everything should run just fine with sudo.



I can't reproduce your problem on 14.04, but this has worked for me in the past when sudo / gksu threw this error.



Sources:




  1. http://www.nikhef.nl/~mjg/xhost_plus.html

  2. https://forums.opensuse.org/showthread.php/405624-sudo-doesnt-open-X-programs

  3. https://wiki.ubuntu.com/CustomXSession






share|improve this answer





















  • 1





    This does work indeed. So does that mean its an access control restriction? Any ideas what the cause of this could be?

    – d_inevitable
    Apr 27 '15 at 22:21











  • Yes, it's a security feature of X. It allows only connections from your user to the xserver until told otherwise, I think. I'm not super sure why it's required for some apps and not others, and I don't have a clue why it would be doing it for gparted of all things. Perhaps you were tinkering and tightened security somewhere?

    – Mark Paskal
    May 4 '15 at 0:16






  • 2





    This yields an error: xhost: unable to open display ""

    – IgorGanapolsky
    Jan 30 '17 at 18:33






  • 5





    On redis, it was suggested to use xhost +local:. After that I was able to launch gparted from the terminal, but using xhost +localhost didn't work.

    – rmin
    Sep 6 '17 at 1:40






  • 1





    Indeed! xhost +local: fixed mine! It yields non-network local connections being added to access control list which is what is needed.

    – lobner
    Nov 10 '17 at 8:16


















11














Try running xhost +localhost in your terminal, and then running the command again. This lets all users on your system (i.e. root) open windows on your screen. Make sure to use +localhost and not simply +, as it's more secure to allow connections from only localhost than from anywhere.



To make this permanent, edit the ~/.xinitrc file like this:



Run gedit ~/.xinitrc



Edit the file to look like this (it should be empty at the start):



#! /bin/bash
xhost +localhost &


Now save the file, log out and log in. Now everything should run just fine with sudo.



I can't reproduce your problem on 14.04, but this has worked for me in the past when sudo / gksu threw this error.



Sources:




  1. http://www.nikhef.nl/~mjg/xhost_plus.html

  2. https://forums.opensuse.org/showthread.php/405624-sudo-doesnt-open-X-programs

  3. https://wiki.ubuntu.com/CustomXSession






share|improve this answer





















  • 1





    This does work indeed. So does that mean its an access control restriction? Any ideas what the cause of this could be?

    – d_inevitable
    Apr 27 '15 at 22:21











  • Yes, it's a security feature of X. It allows only connections from your user to the xserver until told otherwise, I think. I'm not super sure why it's required for some apps and not others, and I don't have a clue why it would be doing it for gparted of all things. Perhaps you were tinkering and tightened security somewhere?

    – Mark Paskal
    May 4 '15 at 0:16






  • 2





    This yields an error: xhost: unable to open display ""

    – IgorGanapolsky
    Jan 30 '17 at 18:33






  • 5





    On redis, it was suggested to use xhost +local:. After that I was able to launch gparted from the terminal, but using xhost +localhost didn't work.

    – rmin
    Sep 6 '17 at 1:40






  • 1





    Indeed! xhost +local: fixed mine! It yields non-network local connections being added to access control list which is what is needed.

    – lobner
    Nov 10 '17 at 8:16
















11












11








11







Try running xhost +localhost in your terminal, and then running the command again. This lets all users on your system (i.e. root) open windows on your screen. Make sure to use +localhost and not simply +, as it's more secure to allow connections from only localhost than from anywhere.



To make this permanent, edit the ~/.xinitrc file like this:



Run gedit ~/.xinitrc



Edit the file to look like this (it should be empty at the start):



#! /bin/bash
xhost +localhost &


Now save the file, log out and log in. Now everything should run just fine with sudo.



I can't reproduce your problem on 14.04, but this has worked for me in the past when sudo / gksu threw this error.



Sources:




  1. http://www.nikhef.nl/~mjg/xhost_plus.html

  2. https://forums.opensuse.org/showthread.php/405624-sudo-doesnt-open-X-programs

  3. https://wiki.ubuntu.com/CustomXSession






share|improve this answer















Try running xhost +localhost in your terminal, and then running the command again. This lets all users on your system (i.e. root) open windows on your screen. Make sure to use +localhost and not simply +, as it's more secure to allow connections from only localhost than from anywhere.



To make this permanent, edit the ~/.xinitrc file like this:



Run gedit ~/.xinitrc



Edit the file to look like this (it should be empty at the start):



#! /bin/bash
xhost +localhost &


Now save the file, log out and log in. Now everything should run just fine with sudo.



I can't reproduce your problem on 14.04, but this has worked for me in the past when sudo / gksu threw this error.



Sources:




  1. http://www.nikhef.nl/~mjg/xhost_plus.html

  2. https://forums.opensuse.org/showthread.php/405624-sudo-doesnt-open-X-programs

  3. https://wiki.ubuntu.com/CustomXSession







share|improve this answer














share|improve this answer



share|improve this answer








edited Feb 19 '17 at 4:26









wjandrea

9,23342563




9,23342563










answered Apr 26 '15 at 23:08









Mark PaskalMark Paskal

2,65411827




2,65411827








  • 1





    This does work indeed. So does that mean its an access control restriction? Any ideas what the cause of this could be?

    – d_inevitable
    Apr 27 '15 at 22:21











  • Yes, it's a security feature of X. It allows only connections from your user to the xserver until told otherwise, I think. I'm not super sure why it's required for some apps and not others, and I don't have a clue why it would be doing it for gparted of all things. Perhaps you were tinkering and tightened security somewhere?

    – Mark Paskal
    May 4 '15 at 0:16






  • 2





    This yields an error: xhost: unable to open display ""

    – IgorGanapolsky
    Jan 30 '17 at 18:33






  • 5





    On redis, it was suggested to use xhost +local:. After that I was able to launch gparted from the terminal, but using xhost +localhost didn't work.

    – rmin
    Sep 6 '17 at 1:40






  • 1





    Indeed! xhost +local: fixed mine! It yields non-network local connections being added to access control list which is what is needed.

    – lobner
    Nov 10 '17 at 8:16
















  • 1





    This does work indeed. So does that mean its an access control restriction? Any ideas what the cause of this could be?

    – d_inevitable
    Apr 27 '15 at 22:21











  • Yes, it's a security feature of X. It allows only connections from your user to the xserver until told otherwise, I think. I'm not super sure why it's required for some apps and not others, and I don't have a clue why it would be doing it for gparted of all things. Perhaps you were tinkering and tightened security somewhere?

    – Mark Paskal
    May 4 '15 at 0:16






  • 2





    This yields an error: xhost: unable to open display ""

    – IgorGanapolsky
    Jan 30 '17 at 18:33






  • 5





    On redis, it was suggested to use xhost +local:. After that I was able to launch gparted from the terminal, but using xhost +localhost didn't work.

    – rmin
    Sep 6 '17 at 1:40






  • 1





    Indeed! xhost +local: fixed mine! It yields non-network local connections being added to access control list which is what is needed.

    – lobner
    Nov 10 '17 at 8:16










1




1





This does work indeed. So does that mean its an access control restriction? Any ideas what the cause of this could be?

– d_inevitable
Apr 27 '15 at 22:21





This does work indeed. So does that mean its an access control restriction? Any ideas what the cause of this could be?

– d_inevitable
Apr 27 '15 at 22:21













Yes, it's a security feature of X. It allows only connections from your user to the xserver until told otherwise, I think. I'm not super sure why it's required for some apps and not others, and I don't have a clue why it would be doing it for gparted of all things. Perhaps you were tinkering and tightened security somewhere?

– Mark Paskal
May 4 '15 at 0:16





Yes, it's a security feature of X. It allows only connections from your user to the xserver until told otherwise, I think. I'm not super sure why it's required for some apps and not others, and I don't have a clue why it would be doing it for gparted of all things. Perhaps you were tinkering and tightened security somewhere?

– Mark Paskal
May 4 '15 at 0:16




2




2





This yields an error: xhost: unable to open display ""

– IgorGanapolsky
Jan 30 '17 at 18:33





This yields an error: xhost: unable to open display ""

– IgorGanapolsky
Jan 30 '17 at 18:33




5




5





On redis, it was suggested to use xhost +local:. After that I was able to launch gparted from the terminal, but using xhost +localhost didn't work.

– rmin
Sep 6 '17 at 1:40





On redis, it was suggested to use xhost +local:. After that I was able to launch gparted from the terminal, but using xhost +localhost didn't work.

– rmin
Sep 6 '17 at 1:40




1




1





Indeed! xhost +local: fixed mine! It yields non-network local connections being added to access control list which is what is needed.

– lobner
Nov 10 '17 at 8:16







Indeed! xhost +local: fixed mine! It yields non-network local connections being added to access control list which is what is needed.

– lobner
Nov 10 '17 at 8:16













4














Execute the following in your terminal:



nano /home/user/.bashrc # user = name of your user


Add the following line at the end.



export XAUTHORITY=$HOME/.Xauthority





share|improve this answer





















  • 1





    Would be useful if you could add some explanation of how this solves the problem, and whether it has any adverse side effects?

    – Geoff
    Jan 1 at 23:25
















4














Execute the following in your terminal:



nano /home/user/.bashrc # user = name of your user


Add the following line at the end.



export XAUTHORITY=$HOME/.Xauthority





share|improve this answer





















  • 1





    Would be useful if you could add some explanation of how this solves the problem, and whether it has any adverse side effects?

    – Geoff
    Jan 1 at 23:25














4












4








4







Execute the following in your terminal:



nano /home/user/.bashrc # user = name of your user


Add the following line at the end.



export XAUTHORITY=$HOME/.Xauthority





share|improve this answer















Execute the following in your terminal:



nano /home/user/.bashrc # user = name of your user


Add the following line at the end.



export XAUTHORITY=$HOME/.Xauthority






share|improve this answer














share|improve this answer



share|improve this answer








edited Aug 26 '18 at 8:00









Ben Creasy

1249




1249










answered Apr 23 '18 at 2:05









Wilder Hernández GarcíaWilder Hernández García

411




411








  • 1





    Would be useful if you could add some explanation of how this solves the problem, and whether it has any adverse side effects?

    – Geoff
    Jan 1 at 23:25














  • 1





    Would be useful if you could add some explanation of how this solves the problem, and whether it has any adverse side effects?

    – Geoff
    Jan 1 at 23:25








1




1





Would be useful if you could add some explanation of how this solves the problem, and whether it has any adverse side effects?

– Geoff
Jan 1 at 23:25





Would be useful if you could add some explanation of how this solves the problem, and whether it has any adverse side effects?

– Geoff
Jan 1 at 23:25


















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