Comment 2 for bug 220131

Reopening, here's the log for the first page of the installer (Language):
Apr 22 05:52:21 ubuntu ubiquity[8181]: Ubiquity 1.8.5
Apr 22 05:52:30 ubuntu ubiquity[8181]: log-output -t ubiquity laptop-detect
Apr 22 05:52:32 ubuntu ubiquity[8181]: log-output -t ubiquity fontconfig-voodoo --auto --force --quiet
Apr 22 05:52:44 ubuntu ubiquity[8181]: switched to page stepLanguage
Apr 22 05:52:45 ubuntu localechooser: info: Locale has been preseeded to ru_RU.UTF-8
Apr 22 05:52:45 ubuntu localechooser: info: Set languagechooser/language-name = 'Russian'
Apr 22 05:52:46 ubuntu localechooser: info: Set countrychooser/shortlist-ru = 'RU'
Apr 22 05:52:46 ubuntu localechooser: info: Set debian-installer/locale = 'ru_RU.UTF-8'
Apr 22 05:52:46 ubuntu ubiquity[8181]: switched to page stepLanguage
Apr 22 05:53:35 ubuntu localechooser: info: LANGNAME=Russian
Apr 22 05:53:35 ubuntu localechooser: info: line=Russian;2;ru;RU;ru_RU.UTF-8;UTF-8;;console-setup
Apr 22 05:53:35 ubuntu localechooser: info: Set debian-installer/language = 'ru'
Apr 22 05:53:35 ubuntu localechooser: info: Set debian-installer/locale = 'ru_RU.UTF-8'
Apr 22 05:53:35 ubuntu localechooser: info: Set debian-installer/fallbacklocale = 'ru_RU.UTF-8'
Apr 22 05:53:35 ubuntu localechooser: info: Set debian-installer/country = 'RU'
Apr 22 05:53:35 ubuntu localechooser: info: Set debian-installer/consoledisplay = 'console-setup'
Apr 22 05:53:35 ubuntu localechooser: info: Set debconf/language = 'ru'
Apr 22 05:53:35 ubuntu localechooser: info: Set debian-installer/country = 'RU'
Apr 22 05:53:35 ubuntu localechooser: info: Set debian-installer/locale = 'ru_RU.UTF-8'
Apr 22 05:53:36 ubuntu ubiquity[8181]: debconffilter_done: Language (current: Language)
Apr 22 05:53:36 ubuntu ubiquity[8181]: Step_before = stepLanguage
Apr 22 05:53:38 ubuntu ubiquity[8181]: switched to page stepLocation

And here's my ubuntu.seed:
# Install the Ubuntu desktop.
tasksel tasksel/first multiselect ubuntu-desktop
d-i pkgsel/language-packs string ru

#d-i languagechooser/language-name string Russian
#d-i countrychooser/shortlist-ru string RU

d-i debian-installer/language string ru
d-i debian-installer/locale string ru_RU.UTF-8
d-i debian-installer/fallbacklocale string ru_RU.UTF-8
d-i debian-installer/country string RU
d-i debian-installer/consoledisplay string console-setup