Debian update to buster
# huge emoji in thunderbird titles, remove by adding a new font apt install fonts-symbola # save and cleanup app armor, old conf prevent from opening attachment files from thunderbird. mv /etc/apparmor.d /etc/apparmor.d_backup apt install --reinstall apparmor apparmor-profiles apparmor-profiles-extra # TSC_DEADLINE errata warning, update micro code apt install intel-microcode
Reboot (I do not find out why a systemctl restart apparmor do not work, reboot is fine)
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