Just upgraded my mini PC running Kodi 17 in Ubuntu 16.04 to Ubuntu 18.04.
Runs fine except that I noticed my MCE remote was not working correctly.
Fixing it to use the MCE IR remote control is easy.
1 - sudo apt-get install ir-keytable
2 - sudo mkdir /etc/rc_keymaps
3 - copy the rc6-mce config file from github to rc_keymaps file rc6_mce
4 - nano /etc/rc_keymaps/rc6_mce (copy and paste keymaps)
5 - sudo ir-keytable -c -w /etc/rc_keymaps/rc6_mce
6 - sudo reboot