打开终端，sudo gedit /usr/share/opera/defaults/font.ini

将该字段下面日语韩语的行全部注释掉(前面加;即可)，若不用宋体，不喜欢字体模糊，把Chinese fonts第一行也注释掉。

; Known fonts that solves specific problems

; Chinese fonts
;family:Simsun|FZSongTi|新宋体|宋体|方正宋体|文泉驿正黑|文泉驛正黑|WenQuanYi Zen Hei=chinese-s excellent try-first
family:WenQuanYi Bitmap Song=chinese-s verygood try-first
family:文鼎ＰＬ简报宋|AR PL UMing*|AR PL SungtiL GB=chinese-s good try-first

上段改成 family:AR PL UMing*|AR PL SungtiL GB=chinese-s good try-first
也行，只调用AR PL UMing*点阵字体

; Japanese fonts
;family:IPA*=japanese excellent try-first
;family:kochi*=japanese good try-first
;family:VL*=japanese verygood try-first


; Korean fonts
;family:baekmuk gulim|undotum=korean sans-serif excellent try-first
;family:baekmuk batang|unbatang=korean serif verygood
;family:baekmuk dotum=korean sans-serif good
;family:ungungseo|unshinmun=korean serif good
;family:baekmuk*|un*=korean

删除/home/~/.opera这保存设置的文件夹，可惜的是以前的设置记录全没了，不删除字体不正常，无奈

浏览器项
依次［工具－首选项－高级－字体］，然后把“网页普通文字”改为“WenQuanYi Bitmap Song”

AR PL UMing CN也可，显示的字体是点阵。