Thank you so much John, I'm trying your solution. Based on your answer, it seems like this problem is not because of something special in my computer. Does that mean this problem occurs on every other computers running Ubuntu with gnome (Ubuntu 18.01) ? (I'm new to Ubuntu, so may have some silly questions :-)
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apparmor in Ubuntu. https://bugs.launchpad.net/bugs/1787600 Title: kernel: [ 6230.503218] audit: type=1400 audit(1534512537.321:398960): apparmor="DENIED" operation="open" profile="snap.gnome-system-monitor .gnome-system-monitor" name="/run/mount/utab" pid=2265 comm="gnome- system-mo" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 Status in apparmor package in Ubuntu: New Bug description: This log repeats so many times in file /var/log/syslog and /var/log/kern.log, causing the size of 2 files exceed 100Mb, and the journal folder increase to several Gbs, causing no space left in "Filesystem root". To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1787600/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp