See also https://bugs.launchpad.net/ubuntu/+source/ptouch-driver/+bug/1604036 and https://bugs.launchpad.net/ubuntu/+source/ptouch-driver/+bug/1607917
See also https:/ /bugs.launchpad .net/ubuntu/ +source/ ptouch- driver/ +bug/1604036 and https:/ /bugs.launchpad .net/ubuntu/ +source/ ptouch- driver/ +bug/1607917