Ubuntu

LXQt authentication issue with GUI apps

Asked by derk

My Lubuntu install has recently bugged out after some updates and it seems any LXQt user authentication prompt is failing

i have tried a bunch of solutions online, but it seems nothing has worked yet.

this seems to be an issue with LXQt failing to use sudo as a super user like su ( since ubuntu locks down su )

i do not want to fix this issue by simply unlocking the su root account in ubuntu

ubuntu and lubuntu are essentially the same, this is just LXQt desktop instead of unity + gnome

build 19.39-2

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derk
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actionparsnip (andrew-woodhead666) said : 		#1

su isn't locked down and you can su to any user account you have the account of. Don't confuse this with the root account which has no password so cannot be used.

What is the output of:

groups; lsb_release -a: uname - a

Thanks

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derk (derkzor) said : 		#2

ouput of groups; lsb_release -a: uname - a
adm cdrom sudo dip plugdev lpadmin sambashare

so my user is clearly part of sudo just not su

but can't it simply grab super user privelages from my user derk as sudo?

essentially the problem in my system is as such. Anytime my system prompts a LXQt user authentication prompt , i will select

[unix-user] (username)

[password] ( enter my password )

and it fails. But if i launch sayd application with sudo through a terminal then it runs fine and no authentication pops up because its already running as sudo

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derk (derkzor) said : 		#3

i think this is an error that happened after a bunch of package updates, i use this machine as a server and often refrain from updating it often due to issues like this haha.

I think my distro might of changed from lxqt to LXQt or had some KDE supplements inside of it that no longer were needed during a series of package updates and auto removes , and it might of broken lxqt-policykit or anything of the such

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actionparsnip (andrew-woodhead666) said : 		#4

You cannot be "part of su". su is a command.

You missed the 2nd and 3rd command outputs. Can you please provide them.

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actionparsnip (andrew-woodhead666) said : 		#5

If you run:

sudo su -

You will become root. Use your user password to authenticate

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actionparsnip (andrew-woodhead666) said : 		#6

The password you should be using is the one you set at install time. You use this to log in so if you are on the system then the password works.

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derk (derkzor) said : 		#7

PROBLEM SOLVED

sorry for my bad Linux language, 4am here and all my linux usage is self taught lol

turns out after some digging around LXQt does not like having multiple accounts assigned sudo (admin) privileges. No idea why, also could be related to both users having same passwords.

info located @ https://bugs.launchpad.net/ubuntu/+source/lubuntu-meta/+bug/1828663

So i simply ran this command in terminal
*sudo deluser *username*

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actionparsnip (andrew-woodhead666) said : 		#8

Great share. Hopefully this will help other users :-)

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derk (derkzor) said : 		#9

i had recently as well tampered with my samba users and i believe i incorrectly created a unix user without converting it into a smb user , bla bla bla

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derk (derkzor) said : 		#10

i had recently as well tampered with my samba users and i believe i incorrectly created a unix user without converting it into a smb user , bla bla bla