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.