CODEWITHSUNDEEP
ubuntuireport
essejoje
essejoje

Reputation: 355

"No protocol specified" when running a sudo/su app on Ubuntu Linux

I try to run the iReport 5.6 on Ubuntu and Java 7, using the command:

$ sudo iReport-5.6.0/bin/ireport
No protocol specified.

I get an error. When I try run it without sudo, I get a permission denied error and an alert that the file Preferences on Default System are read only.

Upvotes: 16

Views: 52931

Answers (4)

AKMalkadi
AKMalkadi

Reputation: 982

You can use sudo with GUI using the options -sE, as follows:

sudo -sE GUI_CMD

For example, if you want to run nemo as root:

sudo -sE nemo

Upvotes: 4

Rishiraj Anand
Rishiraj Anand

Reputation: 131

It looks like either the display port is not opened in your system or it is disabled.
Try running this command as non-root user: 

xhost +

and then run the app with root.

Upvotes: 13

kubanczyk
kubanczyk

Reputation: 5959

Newer systems by design don't allow graphical applications as root (it's a Wayland thing). Workaround:

xhost si:localuser:root

sudo   your-graphical-app

Restore the default permissions:

xhost -si:localuser:root

Upvotes: 31

Alex_Krug
Alex_Krug

Reputation: 427

Most likely you installed the program under the root. X-server (graphical shell) from you has been released from your user. When you say under the root of the program run it sees that the X=server under the user's root are not running and informs you about this.

run a second copy of Xorg from the root

https://unix.stackexchange.com/questions/108784/running-gui-application-as-another-non-root-user

Upvotes: 0

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