Comment 13 for bug 1875774

So the steps to reproduce this are somewhat unclear, so let me know if I did anything wrong:

 1. Boot fresh installation of Lubuntu 20.04
 2. Use lxqt-admin-user to create a second user (let's call it user2)
 3. Use lxqt-admin-user to add user2 to sudo
 4. Logout and back in again (yes, this is a requirement to reproduce— if you want, you can first remove user2's sudo and it will work, but then add it back and continue on)
 5. User lxqt-admin-user to try to remove user2's membership in the sudo group (fail)
 6. Try running pkexec against something. Since synaptic is well set up for it, this is a good example, so install synaptic and run `synaptic-pkexec` (fail)
 7. Remove user2's membership in the sudo group for sure with `sudo usermod -G "" user2`
 8. Try running the pkexec command again (success)

I did check this also against the adm group and it didn't seem to have an effect.

Anyways, I'm pretty sure the error, if anywhere, exists in lxqt-policykit. It's had like almost zero upstream issues, so that's interesting.

It's also possible this is a pkexec issue of some kind. It has caused many headaches for folks.

I'm updating my machine running off of LXQt's git master and we'll see if it behaves any better.