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I'm facing many problems with my computer since I upgraded my Lubuntu (with LXQT) to 18.10 and 19.04. I believe all this problems are, somehow, related since they happened immediately after the upgrade. This is why I'm listing all of them in the same topic.

  • The softwares center Discover show always : Failed to obtain authentication even if I run it from the terminal with sudo plasma-discover

In /var/log/auth.log I can see these lines :

May 13 22:33:51 zied-pc sudo:     zied : TTY=pts/0 ; PWD=/home/zied ; USER=root ; COMMAND=/usr/bin/plasma-discover
May 13 22:33:51 zied-pc sudo: pam_unix(sudo:session): session opened for user root by (uid=0)
May 13 22:34:03 zied-pc PackageKit: uid 0 is trying to obtain org.freedesktop.packagekit.system-sources-refresh auth (only_trusted:0)
May 13 22:34:03 zied-pc PackageKit: uid 0 failed to obtain auth
  • I can't open Skype also using GUI, I can only open it using terminal as root. I found these lines inside /var/log/apport.log

    ERROR: apport (pid 16622) Mon May 13 22:24:11 2019: called for pid 16572, signal 6, core limit 0, dump mode 1
    ERROR: apport (pid 16622) Mon May 13 22:24:11 2019: executable: /usr/share/skypeforlinux/skypeforlinux (command line "/usr/share/skypeforlinux/skypeforlinux\ --executed-from=/home/zied\ --pid=16567")
    ERROR: apport (pid 16622) Mon May 13 22:24:11 2019: is_closing_session(): no DBUS_SESSION_BUS_ADDRESS in environment
    ERROR: apport (pid 16622) Mon May 13 22:24:28 2019: wrote report /var/crash/_usr_share_skypeforlinux_skypeforlinux.1000.crash
    
  • I can't shutdown or reboot my computer using GUI. I need also to use terminal to do it !

  • Connecting USB or trying to open another partition with PCManFM show also this error :

Not authorized to perform operation

Any idea would be appreciated ! Thank you.

  • This sometimes happens with multi-version upgrades. The correct answer? Backup your data. Do a FRESH install of 19.04. Restore your data. Be happy. – heynnema May 13 at 22:52

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