> You have installed apparmor. Have you tried to disable the AppArmor > profile for Thunderbird and check for the further existence of the issue? > > $ sudo aa-disable /etc/apparmor.d/usr.bin.thunderbird
On my stable (stretch) system, apparmor was installed automatically along with the backport kernel (which now depends on apparmor). But the command aa-disable isn't available so the solution to disable the profile is: $ sudo ln -s /etc/apparmor.d/usr.bin.thunderbird /etc/apparmor.d/disable/ $ sudo apparmor_parser -R /etc/apparmor.d/usr.bin.thunderbird Then Thunderbird was able to start properly. I've tried applying 48e6b6 to the thunderbird apparmor profile on my system, but it didn't help. Thanks, -- Jerome
