My .dmrc reads:
[Desktop] Session=ubuntu-2d Layout=gb Language=en_GB.UTF-8 Langlist=en_GB:en LCMess=en_GB.UTF-8
My .dmrc reads:
[Desktop] en_GB.UTF- 8
Session=ubuntu-2d
Layout=gb
Language=
Langlist=en_GB:en
LCMess=en_GB.UTF-8