我使用 snap 已经有一段时间了，但是最近一次升级后，当我尝试打开任何应用程序时出现此错误
Snap-confine has elevated permissions and is not confined but should be.
Refusing to continue to avoid permission escalation attacks
我尝试了各种修复，但情况越来越糟。关于我应该做什么的任何想法？
我也尝试过sudo apt purge snapd snap-confine && sudo apt install -y snapd，但是当我尝试打开 pycharm-community 时，它什么也没做。
sudo apparmor_parser -r /etc/apparmor.d/*snap-confine*
sudo apparmor_parser -r /var/lib/snapd/apparmor/profiles/snap-confine*
修复它。无需重新启动。
这对我有用
service snapd.apparmor start
（它需要根。）
systemctl enable --now apparmor.service
systemctl enable --now snapd.apparmor.service
sudo systemctl start apparmor
sudo apparmor_parser -r /var/lib/snapd/apparmor/profiles/*
In my case it was caused by a bad AppArmor profile being present and loaded in complain (or enforce?) mode in
/etc/apparmor.d/usr.bin.snap
This apparently lead to snap not being able to determine the number of the snap and therefor caused a bad profile to be added to AppArmor.
"aa-status" outputed lines such as:
/usr/bin/snap//null-/usr/lib/snapd/snap-confine
for being in enforce mode
I moved that file (/etc/apparmor.d/usr.bin.snap) to my home directory, ran "sudo aa-remove-unknown" and "sudo systemctl restart apparmor" after which everything was back to normal.
However I don't know the origins of /etc/apparmor.d/usr.bin.snap so keep in mind that there might be something wrong with the system.