Another thought: When running fc-match with the config file disabled, the Japanese font is consequently listed first. Wondering if it would be possible to place the Japanese lines first in the config file, without messing up the Chinese rendering.
$ LC_CTYPE=en_US.UTF-8 fc-match -a | grep -i noto NotoSansCJK.ttc: "Noto Sans CJK JP" "DemiLight" NotoSansCJK.ttc: "Noto Sans CJK KR" "DemiLight" NotoSansCJK.ttc: "Noto Sans CJK SC" "DemiLight" NotoSansCJK.ttc: "Noto Sans CJK TC" "DemiLight" NotoSansCJK.ttc: "Noto Sans CJK JP" "Regular" NotoSansCJK.ttc: "Noto Sans CJK KR" "Regular" NotoSansCJK.ttc: "Noto Sans CJK SC" "Regular" NotoSansCJK.ttc: "Noto Sans CJK TC" "Regular" NotoSansCJK.ttc: "Noto Sans Mono CJK JP" "Regular" NotoSansCJK.ttc: "Noto Sans Mono CJK KR" "Regular" NotoSansCJK.ttc: "Noto Sans Mono CJK SC" "Regular" NotoSansCJK.ttc: "Noto Sans Mono CJK TC" "Regular" NotoSansCJK.ttc: "Noto Sans CJK JP" "Medium" NotoSansCJK.ttc: "Noto Sans CJK KR" "Medium" NotoSansCJK.ttc: "Noto Sans CJK SC" "Medium" NotoSansCJK.ttc: "Noto Sans CJK TC" "Medium" NotoSansCJK.ttc: "Noto Sans CJK JP" "Thin" NotoSansCJK.ttc: "Noto Sans CJK KR" "Thin" NotoSansCJK.ttc: "Noto Sans CJK SC" "Thin" NotoSansCJK.ttc: "Noto Sans CJK TC" "Thin" NotoSansCJK.ttc: "Noto Sans CJK JP" "Light" NotoSansCJK.ttc: "Noto Sans CJK KR" "Light" NotoSansCJK.ttc: "Noto Sans CJK SC" "Light" NotoSansCJK.ttc: "Noto Sans CJK TC" "Light" NotoSansCJK.ttc: "Noto Sans CJK JP" "Bold" NotoSansCJK.ttc: "Noto Sans CJK KR" "Bold" NotoSansCJK.ttc: "Noto Sans CJK SC" "Bold" NotoSansCJK.ttc: "Noto Sans CJK TC" "Bold" NotoSansCJK.ttc: "Noto Sans Mono CJK JP" "Bold" NotoSansCJK.ttc: "Noto Sans Mono CJK KR" "Bold" NotoSansCJK.ttc: "Noto Sans Mono CJK SC" "Bold" NotoSansCJK.ttc: "Noto Sans Mono CJK TC" "Bold" NotoSansCJK.ttc: "Noto Sans CJK JP" "Black" NotoSansCJK.ttc: "Noto Sans CJK KR" "Black" NotoSansCJK.ttc: "Noto Sans CJK SC" "Black" NotoSansCJK.ttc: "Noto Sans CJK TC" "Black" But before trying that, it would be great to know the result of the current PPA version of language-selector. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to language-selector in Ubuntu. https://bugs.launchpad.net/bugs/1540063 Title: Slideshow output in different font when install in Japanese. (16.04) Status in language-selector package in Ubuntu: Fix Released Status in ubiquity package in Ubuntu: Confirmed Bug description: I was to proceed to install the Ubuntu MATE 16.04 Alpha 2 in Japanese (日本語). After the installation work, Japanese view of the slide show has encountered a problem that changes in Serif Font. It might have been output in the Chinese font. I also tried in other flavors, as a result, even with the same problem occurs Ubuntu Desktop Image 16.04 Daily Build. it does not seem to reproduce all of the flavors, Xubuntu and Lubuntu are output normally. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/language-selector/+bug/1540063/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

