Re: sudo / su with GUI apps - ?

[Samuel Sieb]

On 1/11/22 11:54, C Linus Hicks wrote:
> Making some assumptions about your requirements:
> Make sure xauth is installed
> Your DISPLAY environment variable is likely: ":0" - just verify it is set
> Run the command: "xauth list"
> Copy the line that has "<hostname>/unix:", all three parts
> Use su - or sudo to get an interactive session for alternate user
> Run xauth command with no arguments
> Type "list" at the prompt
> Assuming this user currently doesn't have permission (no entry for host/display):
> Type "add" and then paste the line you copied from step 4
> Type "exit" command from xauth
> Firefox should now be able to use the display, and your addition is persistent

These instructions are only for X, but he was using wayland as indicated 
by running "firefox-wayland".