我认为这是 Ubuntu Vivid 特有的，因为现有的解决方案都无济于事：
到目前为止我找到的所有解决方案都建议dpkg --purge --force-all，但这是我在 Ubuntu Vivid 下得到的：
% dpkg --purge --force-all modemmanager
(Reading database ... 124407 files and directories currently installed.)
Removing modemmanager (1.4.0-1) ...
invoke-rc.d: unknown initscript, /etc/init.d/modemmanager not found.
dpkg: error processing package modemmanager (--purge):
subprocess installed pre-removal script returned error exit status 100
invoke-rc.d: unknown initscript, /etc/init.d/modemmanager not found.
dpkg: error while cleaning up:
subprocess installed post-installation script returned error exit status 100
Errors were encountered while processing:
modemmanager
答案1
随后立即找到解决方案：
% > /etc/init.d/modemmanager
% dpkg --purge --force-all modemmanager
(Reading database ... 124407 files and directories currently installed.)
Removing modemmanager (1.4.0-1) ...
Purging configuration files for modemmanager (1.4.0-1) ...
Processing triggers for man-db ...
即创建一个空的启动脚本/etc/init.d/modemmanager。