Clicking any checkbox freezes the program

[Ads20000]

Upgraded to 18.04 today and clicking any checkbox in Software & Updates freezes the program (at least, in the Communitheme Wayland session (`snap install communitheme --edge` 0.1 (73))).

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: software-properties-gtk 0.96.24.32.1
ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
Uname: Linux 4.15.0-15-generic x86_64
ApportVersion: 2.20.9-0ubuntu6
Architecture: amd64
CurrentDesktop: communitheme:ubuntu:GNOME
Date: Sun Apr 22 23:52:47 2018
InstallationDate: Installed on 2017-08-03 (262 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
PackageArchitecture: all
SourcePackage: software-properties
UpgradeStatus: Upgraded to bionic on 2018-04-22 (0 days ago)

[Sebastien Bacher (seb128)]

Could you add the stdout from when getting the issue or the journal log around that time?

[Ads20000 (ads20000)]

`cat /var/log/journal/b0a7fe29cb42426a87b70467f02ead86/system.journal` produces gobbledygook (another bug that I should report?!)

Stuff like ��_�M>��˜X���/�.d`�8��!:��A��8�!��ʼ�h�8�V�@�fF��8�]M�Bn��9�Q
z4J�h
9`U@9��a��u�9�ב��x�p9jʸ��~9�՟������9��g�^0�`9���K��^M9%��{��@ͨ9�֗Su�x9��sA�����9��xË�89M
_�j��"�92jɛQI��H9��z�5[�b�9�������9�fO
���P9�@۠�:҂�9B
�ةO\@�
-V�f��j2�Aa

  ��_�M>��˜X���/�.d`�8��!:��A��8�!��ʼ�h�8�V�@�fF��8�]M�Bn��9�Q
z4J�h
9`U@9��a��u�9�ב��x�p9jʸ��~9�՟������9��g�^0�`9���K��^M9%��{��@ͨ9�֗Su�x9��sA�����9��xË�89M
_�j��"�92jɛQI��H9��z�5[�b�9�������9�fO
���P9�@۠�:҂�9B
�ةO\

Cat seems to read other text files fine...idk what stuff that file would have in it so not sure I want to attach it without my being able to read it?

I know I upgraded early so I have to accept the possibility that I've simply ruined my computer somehow, but equally it's in Final Freeze and many will be manually upgrading soon...

I can't open anything with Text Editor, which I'm trying to report, Launchpad keeps refreshing on the +filebug page (after running `ubuntu-bug gedit`).

I'm on IRC if you'd rather do things quickfire there :)

[Ads20000 (ads20000)]

OK, scratch that, Text Editor eventually opened (and the bug screen opened). I think it wasn't working because system.journal is so big and thus Text Editor really struggled with it (should it handle big files better, maybe?)! My bad. Nano can't seem to read it either though (gobbledygook again).

[Ads20000 (ads20000)]

Alright, `journalctl -f` gets me the info you want! There's no output to that when the freeze happen.

[Ads20000 (ads20000)]

OK, actually interactions with the app do seem to have an effect (e.g. clicking an item in Other Software or clicking a checkbox) but only after 25 seconds or so! So I think I can still count this as a freeze of sorts?

[Ads20000 (ads20000)]

OK so this only happens when clicking Cancel on the authentication, marking this as a duplicate of bug 1765353 cheers Sebastien! :)