This is the output of localectl:
localectl ✔
System Locale: LANG=en_US.UTF-8
VC Keymap: es
X11 Layout: es
This is my /etc/locale.gen (which of course I never touched):
cat /etc/locale.gen ✔
# Configuration file for locale-gen
#
# lists of locales that are to be generated by the locale-gen command.
#
# Each line is of the form:
#
# <locale> <charset>
#
# where <locale> is one of the locales given in /usr/share/i18n/locales
# and <charset> is one of the character sets listed in /usr/share/i18n/charmaps
#
# Examples:
# en_US ISO-8859-1
# en_US.UTF-8 UTF-8
# de_DE ISO-8859-1
# de_DE@euro ISO-8859-15
#
# The locale-gen command will generate all the locales,
# placing them in /usr/lib/locale.
#
# A list of supported locales is included in this file.
# Uncomment the ones you need.
#
#aa_DJ.UTF-8 UTF-8
#aa_DJ ISO-8859-1
#aa_ER UTF-8
#aa_ER@saaho UTF-8
#aa_ET UTF-8
#af_ZA.UTF-8 UTF-8
#af_ZA ISO-8859-1
#agr_PE UTF-8
#ak_GH UTF-8
#am_ET UTF-8
#an_ES.UTF-8 UTF-8
#an_ES ISO-8859-15
#anp_IN UTF-8
#ar_AE.UTF-8 UTF-8
#ar_AE ISO-8859-6
#ar_BH.UTF-8 UTF-8
#ar_BH ISO-8859-6
#ar_DZ.UTF-8 UTF-8
#ar_DZ ISO-8859-6
#ar_EG.UTF-8 UTF-8
#ar_EG ISO-8859-6
#ar_IN UTF-8
#ar_IQ.UTF-8 UTF-8
#ar_IQ ISO-8859-6
#ar_JO.UTF-8 UTF-8
#ar_JO ISO-8859-6
#ar_KW.UTF-8 UTF-8
#ar_KW ISO-8859-6
#ar_LB.UTF-8 UTF-8
#ar_LB ISO-8859-6
#ar_LY.UTF-8 UTF-8
#ar_LY ISO-8859-6
#ar_MA.UTF-8 UTF-8
#ar_MA ISO-8859-6
#ar_OM.UTF-8 UTF-8
#ar_OM ISO-8859-6
#ar_QA.UTF-8 UTF-8
#ar_QA ISO-8859-6
#ar_SA.UTF-8 UTF-8
#ar_SA ISO-8859-6
#ar_SD.UTF-8 UTF-8
#ar_SD ISO-8859-6
#ar_SS UTF-8
#ar_SY.UTF-8 UTF-8
#ar_SY ISO-8859-6
#ar_TN.UTF-8 UTF-8
#ar_TN ISO-8859-6
#ar_YE.UTF-8 UTF-8
#ar_YE ISO-8859-6
#ayc_PE UTF-8
#az_AZ UTF-8
#az_IR UTF-8
#as_IN UTF-8
#ast_ES.UTF-8 UTF-8
#ast_ES ISO-8859-15
#be_BY.UTF-8 UTF-8
#be_BY CP1251
#be_BY@latin UTF-8
#bem_ZM UTF-8
#ber_DZ UTF-8
#ber_MA UTF-8
#bg_BG.UTF-8 UTF-8
#bg_BG CP1251
#bhb_IN.UTF-8 UTF-8
#bho_IN UTF-8
#bho_NP UTF-8
#bi_VU UTF-8
#bn_BD UTF-8
#bn_IN UTF-8
#bo_CN UTF-8
#bo_IN UTF-8
#br_FR.UTF-8 UTF-8
#br_FR ISO-8859-1
#br_FR@euro ISO-8859-15
#brx_IN UTF-8
#bs_BA.UTF-8 UTF-8
#bs_BA ISO-8859-2
#byn_ER UTF-8
#ca_AD.UTF-8 UTF-8
#ca_AD ISO-8859-15
#ca_ES.UTF-8 UTF-8
#ca_ES ISO-8859-1
#ca_ES@euro ISO-8859-15
#ca_ES@valencia UTF-8
#ca_FR.UTF-8 UTF-8
#ca_FR ISO-8859-15
#ca_IT.UTF-8 UTF-8
#ca_IT ISO-8859-15
#ce_RU UTF-8
#chr_US UTF-8
#ckb_IQ UTF-8
#cmn_TW UTF-8
#crh_UA UTF-8
#cs_CZ.UTF-8 UTF-8
#cs_CZ ISO-8859-2
#csb_PL UTF-8
#cv_RU UTF-8
#cy_GB.UTF-8 UTF-8
#cy_GB ISO-8859-14
#da_DK.UTF-8 UTF-8
#da_DK ISO-8859-1
#de_AT.UTF-8 UTF-8
#de_AT ISO-8859-1
#de_AT@euro ISO-8859-15
#de_BE.UTF-8 UTF-8
#de_BE ISO-8859-1
#de_BE@euro ISO-8859-15
#de_CH.UTF-8 UTF-8
#de_CH ISO-8859-1
#de_DE.UTF-8 UTF-8
#de_DE ISO-8859-1
#de_DE@euro ISO-8859-15
#de_IT.UTF-8 UTF-8
#de_IT ISO-8859-1
#de_LI.UTF-8 UTF-8
#de_LU.UTF-8 UTF-8
#de_LU ISO-8859-1
#de_LU@euro ISO-8859-15
#doi_IN UTF-8
#dsb_DE UTF-8
#dv_MV UTF-8
#dz_BT UTF-8
#el_GR.UTF-8 UTF-8
#el_GR ISO-8859-7
#el_GR@euro ISO-8859-7
#el_CY.UTF-8 UTF-8
#el_CY ISO-8859-7
#en_AG UTF-8
#en_AU.UTF-8 UTF-8
#en_AU ISO-8859-1
#en_BW.UTF-8 UTF-8
#en_BW ISO-8859-1
#en_CA.UTF-8 UTF-8
#en_CA ISO-8859-1
#en_DK.UTF-8 UTF-8
#en_DK ISO-8859-1
#en_GB.UTF-8 UTF-8
#en_GB ISO-8859-1
#en_HK.UTF-8 UTF-8
#en_HK ISO-8859-1
#en_IE.UTF-8 UTF-8
#en_IE ISO-8859-1
#en_IE@euro ISO-8859-15
#en_IL UTF-8
#en_IN UTF-8
#en_NG UTF-8
#en_NZ.UTF-8 UTF-8
#en_NZ ISO-8859-1
#en_PH.UTF-8 UTF-8
#en_PH ISO-8859-1
#en_SC.UTF-8 UTF-8
#en_SG.UTF-8 UTF-8
#en_SG ISO-8859-1
#en_US.UTF-8 UTF-8
#en_US ISO-8859-1
#en_ZA.UTF-8 UTF-8
#en_ZA ISO-8859-1
#en_ZM UTF-8
#en_ZW.UTF-8 UTF-8
#en_ZW ISO-8859-1
#eo UTF-8
#es_AR.UTF-8 UTF-8
#es_AR ISO-8859-1
#es_BO.UTF-8 UTF-8
#es_BO ISO-8859-1
#es_CL.UTF-8 UTF-8
#es_CL ISO-8859-1
#es_CO.UTF-8 UTF-8
#es_CO ISO-8859-1
#es_CR.UTF-8 UTF-8
#es_CR ISO-8859-1
#es_CU UTF-8
#es_DO.UTF-8 UTF-8
#es_DO ISO-8859-1
#es_EC.UTF-8 UTF-8
#es_EC ISO-8859-1
#es_ES.UTF-8 UTF-8
#es_ES ISO-8859-1
#es_ES@euro ISO-8859-15
#es_GT.UTF-8 UTF-8
#es_GT ISO-8859-1
#es_HN.UTF-8 UTF-8
#es_HN ISO-8859-1
#es_MX.UTF-8 UTF-8
#es_MX ISO-8859-1
#es_NI.UTF-8 UTF-8
#es_NI ISO-8859-1
#es_PA.UTF-8 UTF-8
#es_PA ISO-8859-1
#es_PE.UTF-8 UTF-8
#es_PE ISO-8859-1
#es_PR.UTF-8 UTF-8
#es_PR ISO-8859-1
#es_PY.UTF-8 UTF-8
#es_PY ISO-8859-1
#es_SV.UTF-8 UTF-8
#es_SV ISO-8859-1
#es_US.UTF-8 UTF-8
#es_US ISO-8859-1
#es_UY.UTF-8 UTF-8
#es_UY ISO-8859-1
#es_VE.UTF-8 UTF-8
#es_VE ISO-8859-1
#et_EE.UTF-8 UTF-8
#et_EE ISO-8859-1
#et_EE.ISO-8859-15 ISO-8859-15
#eu_ES.UTF-8 UTF-8
#eu_ES ISO-8859-1
#eu_ES@euro ISO-8859-15
#fa_IR UTF-8
#ff_SN UTF-8
#fi_FI.UTF-8 UTF-8
#fi_FI ISO-8859-1
#fi_FI@euro ISO-8859-15
#fil_PH UTF-8
#fo_FO.UTF-8 UTF-8
#fo_FO ISO-8859-1
#fr_BE.UTF-8 UTF-8
#fr_BE ISO-8859-1
#fr_BE@euro ISO-8859-15
#fr_CA.UTF-8 UTF-8
#fr_CA ISO-8859-1
#fr_CH.UTF-8 UTF-8
#fr_CH ISO-8859-1
#fr_FR.UTF-8 UTF-8
#fr_FR ISO-8859-1
#fr_FR@euro ISO-8859-15
#fr_LU.UTF-8 UTF-8
#fr_LU ISO-8859-1
#fr_LU@euro ISO-8859-15
#fur_IT UTF-8
#fy_NL UTF-8
#fy_DE UTF-8
#ga_IE.UTF-8 UTF-8
#ga_IE ISO-8859-1
#ga_IE@euro ISO-8859-15
#gd_GB.UTF-8 UTF-8
#gd_GB ISO-8859-15
#gez_ER UTF-8
#gez_ER@abegede UTF-8
#gez_ET UTF-8
#gez_ET@abegede UTF-8
#gl_ES.UTF-8 UTF-8
#gl_ES ISO-8859-1
#gl_ES@euro ISO-8859-15
#gu_IN UTF-8
#gv_GB.UTF-8 UTF-8
#gv_GB ISO-8859-1
#ha_NG UTF-8
#hak_TW UTF-8
#he_IL.UTF-8 UTF-8
#he_IL ISO-8859-8
#hi_IN UTF-8
#hif_FJ UTF-8
#hne_IN UTF-8
#hr_HR.UTF-8 UTF-8
#hr_HR ISO-8859-2
#hsb_DE ISO-8859-2
#hsb_DE.UTF-8 UTF-8
#ht_HT UTF-8
#hu_HU.UTF-8 UTF-8
#hu_HU ISO-8859-2
#hy_AM UTF-8
#hy_AM.ARMSCII-8 ARMSCII-8
#ia_FR UTF-8
#id_ID.UTF-8 UTF-8
#id_ID ISO-8859-1
#ig_NG UTF-8
#ik_CA UTF-8
#is_IS.UTF-8 UTF-8
#is_IS ISO-8859-1
#it_CH.UTF-8 UTF-8
#it_CH ISO-8859-1
#it_IT.UTF-8 UTF-8
#it_IT ISO-8859-1
#it_IT@euro ISO-8859-15
#iu_CA UTF-8
#ja_JP.EUC-JP EUC-JP
#ja_JP.UTF-8 UTF-8
#ka_GE.UTF-8 UTF-8
#ka_GE GEORGIAN-PS
#kab_DZ UTF-8
#kk_KZ.UTF-8 UTF-8
#kk_KZ PT154
#kl_GL.UTF-8 UTF-8
#kl_GL ISO-8859-1
#km_KH UTF-8
#kn_IN UTF-8
#ko_KR.EUC-KR EUC-KR
#ko_KR.UTF-8 UTF-8
#kok_IN UTF-8
#ks_IN UTF-8
#ks_IN@devanagari UTF-8
#ku_TR.UTF-8 UTF-8
#ku_TR ISO-8859-9
#kw_GB.UTF-8 UTF-8
#kw_GB ISO-8859-1
#ky_KG UTF-8
#lb_LU UTF-8
#lg_UG.UTF-8 UTF-8
#lg_UG ISO-8859-10
#li_BE UTF-8
#li_NL UTF-8
#lij_IT UTF-8
#ln_CD UTF-8
#lo_LA UTF-8
#lt_LT.UTF-8 UTF-8
#lt_LT ISO-8859-13
#lv_LV.UTF-8 UTF-8
#lv_LV ISO-8859-13
#lzh_TW UTF-8
#mag_IN UTF-8
#mai_IN UTF-8
#mai_NP UTF-8
#mfe_MU UTF-8
#mg_MG.UTF-8 UTF-8
#mg_MG ISO-8859-15
#mhr_RU UTF-8
#mi_NZ.UTF-8 UTF-8
#mi_NZ ISO-8859-13
#miq_NI UTF-8
#mjw_IN UTF-8
#mk_MK.UTF-8 UTF-8
#mk_MK ISO-8859-5
#ml_IN UTF-8
#mn_MN UTF-8
#mni_IN UTF-8
#mnw_MM UTF-8
#mr_IN UTF-8
#ms_MY.UTF-8 UTF-8
#ms_MY ISO-8859-1
#mt_MT.UTF-8 UTF-8
#mt_MT ISO-8859-3
#my_MM UTF-8
#nan_TW UTF-8
#nan_TW@latin UTF-8
#nb_NO.UTF-8 UTF-8
#nb_NO ISO-8859-1
#nds_DE UTF-8
#nds_NL UTF-8
#ne_NP UTF-8
#nhn_MX UTF-8
#niu_NU UTF-8
#niu_NZ UTF-8
#nl_AW UTF-8
#nl_BE.UTF-8 UTF-8
#nl_BE ISO-8859-1
#nl_BE@euro ISO-8859-15
#nl_NL.UTF-8 UTF-8
#nl_NL ISO-8859-1
#nl_NL@euro ISO-8859-15
#nn_NO.UTF-8 UTF-8
#nn_NO ISO-8859-1
#nr_ZA UTF-8
#nso_ZA UTF-8
#oc_FR.UTF-8 UTF-8
#oc_FR ISO-8859-1
#om_ET UTF-8
#om_KE.UTF-8 UTF-8
#om_KE ISO-8859-1
#or_IN UTF-8
#os_RU UTF-8
#pa_IN UTF-8
#pa_PK UTF-8
#pap_AW UTF-8
#pap_CW UTF-8
#pl_PL.UTF-8 UTF-8
#pl_PL ISO-8859-2
#ps_AF UTF-8
#pt_BR.UTF-8 UTF-8
#pt_BR ISO-8859-1
#pt_PT.UTF-8 UTF-8
#pt_PT ISO-8859-1
#pt_PT@euro ISO-8859-15
#quz_PE UTF-8
#raj_IN UTF-8
#rif_MA UTF-8
#ro_RO.UTF-8 UTF-8
#ro_RO ISO-8859-2
#ru_RU.KOI8-R KOI8-R
#ru_RU.UTF-8 UTF-8
#ru_RU ISO-8859-5
#ru_UA.UTF-8 UTF-8
#ru_UA KOI8-U
#rw_RW UTF-8
#sa_IN UTF-8
#sah_RU UTF-8
#sat_IN UTF-8
#sc_IT UTF-8
#sd_IN UTF-8
#sd_IN@devanagari UTF-8
#se_NO UTF-8
#sgs_LT UTF-8
#shn_MM UTF-8
#shs_CA UTF-8
#si_LK UTF-8
#sid_ET UTF-8
#sk_SK.UTF-8 UTF-8
#sk_SK ISO-8859-2
#sl_SI.UTF-8 UTF-8
#sl_SI ISO-8859-2
#sm_WS UTF-8
#so_DJ.UTF-8 UTF-8
#so_DJ ISO-8859-1
#so_ET UTF-8
#so_KE.UTF-8 UTF-8
#so_KE ISO-8859-1
#so_SO.UTF-8 UTF-8
#so_SO ISO-8859-1
#sq_AL.UTF-8 UTF-8
#sq_AL ISO-8859-1
#sq_MK UTF-8
#sr_ME UTF-8
#sr_RS UTF-8
#sr_RS@latin UTF-8
#ss_ZA UTF-8
#st_ZA.UTF-8 UTF-8
#st_ZA ISO-8859-1
#sv_FI.UTF-8 UTF-8
#sv_FI ISO-8859-1
#sv_FI@euro ISO-8859-15
#sv_SE.UTF-8 UTF-8
#sv_SE ISO-8859-1
#sw_KE UTF-8
#sw_TZ UTF-8
#syr UTF-8
#szl_PL UTF-8
#ta_IN UTF-8
#ta_LK UTF-8
#tcy_IN.UTF-8 UTF-8
#te_IN UTF-8
#tg_TJ.UTF-8 UTF-8
#tg_TJ KOI8-T
#th_TH.UTF-8 UTF-8
#th_TH TIS-620
#the_NP UTF-8
#ti_ER UTF-8
#ti_ET UTF-8
#tig_ER UTF-8
#tk_TM UTF-8
#tl_PH.UTF-8 UTF-8
#tl_PH ISO-8859-1
#tn_ZA UTF-8
#to_TO UTF-8
#tpi_PG UTF-8
#tr_CY.UTF-8 UTF-8
#tr_CY ISO-8859-9
#tr_TR.UTF-8 UTF-8
#tr_TR ISO-8859-9
#ts_ZA UTF-8
#tt_RU UTF-8
#tt_RU@iqtelif UTF-8
#ug_CN UTF-8
#uk_UA.UTF-8 UTF-8
#uk_UA KOI8-U
#unm_US UTF-8
#ur_IN UTF-8
#ur_PK UTF-8
#uz_UZ.UTF-8 UTF-8
#uz_UZ ISO-8859-1
#uz_UZ@cyrillic UTF-8
#ve_ZA UTF-8
#vi_VN UTF-8
#wa_BE ISO-8859-1
#wa_BE@euro ISO-8859-15
#wa_BE.UTF-8 UTF-8
#wae_CH UTF-8
#wal_ET UTF-8
#wo_SN UTF-8
#xh_ZA.UTF-8 UTF-8
#xh_ZA ISO-8859-1
#yi_US.UTF-8 UTF-8
#yi_US CP1255
#yo_NG UTF-8
#yue_HK UTF-8
#yuw_PG UTF-8
#zh_CN.GB18030 GB18030
#zh_CN.GBK GBK
#zh_CN.UTF-8 UTF-8
#zh_CN GB2312
#zh_HK.UTF-8 UTF-8
#zh_HK BIG5-HKSCS
#zh_SG.UTF-8 UTF-8
#zh_SG.GBK GBK
#zh_SG GB2312
#zh_TW.EUC-TW EUC-TW
#zh_TW.UTF-8 UTF-8
#zh_TW BIG5
#zu_ZA.UTF-8 UTF-8
#zu_ZA ISO-8859-1
###
#
# Locales enabled by Calamares
en_US.UTF-8 UTF-8
This is the output of locale -a:
locale -a ✔
aa_DJ.utf8
aa_ER.utf8
aa_ER.utf8@saaho
aa_ET.utf8
af_ZA.utf8
agr_PE.utf8
ak_GH.utf8
am_ET.utf8
an_ES.utf8
anp_IN.utf8
ar_AE.utf8
ar_BH.utf8
ar_DZ.utf8
ar_EG.utf8
ar_IN.utf8
ar_IQ.utf8
ar_JO.utf8
ar_KW.utf8
ar_LB.utf8
ar_LY.utf8
ar_MA.utf8
ar_OM.utf8
ar_QA.utf8
ar_SA.utf8
ar_SD.utf8
ar_SS.utf8
ar_SY.utf8
ar_TN.utf8
ar_YE.utf8
as_IN.utf8
ast_ES.utf8
ayc_PE.utf8
az_AZ.utf8
az_IR.utf8
be_BY.utf8
be_BY.utf8@latin
bem_ZM.utf8
ber_DZ.utf8
ber_MA.utf8
bg_BG.utf8
bhb_IN.utf8
bho_IN.utf8
bho_NP.utf8
bi_VU.utf8
bn_BD.utf8
bn_IN.utf8
bo_CN.utf8
bo_IN.utf8
br_FR.utf8
brx_IN.utf8
bs_BA.utf8
byn_ER.utf8
C
ca_AD.utf8
ca_ES.utf8
ca_ES.utf8@valencia
ca_FR.utf8
ca_IT.utf8
ce_RU.utf8
chr_US.utf8
cmn_TW.utf8
crh_UA.utf8
csb_PL.utf8
cs_CZ.utf8
C.utf8
C.UTF-8
cv_RU.utf8
cy_GB.utf8
da_DK.utf8
de_AT.utf8
de_BE.utf8
de_CH.utf8
de_DE.utf8
de_IT.utf8
de_LI.utf8
de_LU.utf8
doi_IN.utf8
dsb_DE.utf8
dv_MV.utf8
dz_BT.utf8
el_CY.utf8
el_GR.utf8
en_AG.utf8
en_AU.utf8
en_BW.utf8
en_CA.utf8
en_DK.utf8
en_GB.utf8
en_HK.utf8
en_IE.utf8
en_IL.utf8
en_IN.utf8
en_NG.utf8
en_NZ.utf8
en_PH.utf8
en_SC.utf8
en_SG.utf8
en_US.utf8
en_ZA.utf8
en_ZM.utf8
en_ZW.utf8
eo.utf8
es_AR.utf8
es_BO.utf8
es_CL.utf8
es_CO.utf8
es_CR.utf8
es_CU.utf8
es_DO.utf8
es_EC.utf8
es_ES.utf8
es_GT.utf8
es_HN.utf8
es_MX.utf8
es_NI.utf8
es_PA.utf8
es_PE.utf8
es_PR.utf8
es_PY.utf8
es_SV.utf8
es_US.utf8
es_UY.utf8
es_VE.utf8
et_EE.utf8
eu_ES.utf8
fa_IR.utf8
ff_SN.utf8
fi_FI.utf8
fil_PH.utf8
fo_FO.utf8
fr_BE.utf8
fr_CA.utf8
fr_CH.utf8
fr_FR.utf8
fr_LU.utf8
fur_IT.utf8
fy_DE.utf8
fy_NL.utf8
ga_IE.utf8
gd_GB.utf8
gez_ER.utf8
gez_ER.utf8@abegede
gez_ET.utf8
gez_ET.utf8@abegede
gl_ES.utf8
gu_IN.utf8
gv_GB.utf8
hak_TW.utf8
ha_NG.utf8
he_IL.utf8
hif_FJ.utf8
hi_IN.utf8
hne_IN.utf8
hr_HR.utf8
hsb_DE.utf8
ht_HT.utf8
hu_HU.utf8
hy_AM.utf8
ia_FR.utf8
id_ID.utf8
ig_NG.utf8
ik_CA.utf8
is_IS.utf8
it_CH.utf8
it_IT.utf8
iu_CA.utf8
ja_JP.utf8
kab_DZ.utf8
ka_GE.utf8
kk_KZ.utf8
kl_GL.utf8
km_KH.utf8
kn_IN.utf8
kok_IN.utf8
ko_KR.utf8
ks_IN.utf8
ks_IN.utf8@devanagari
ku_TR.utf8
kw_GB.utf8
ky_KG.utf8
lb_LU.utf8
lg_UG.utf8
li_BE.utf8
lij_IT.utf8
li_NL.utf8
ln_CD.utf8
lo_LA.utf8
lt_LT.utf8
lv_LV.utf8
lzh_TW.utf8
mag_IN.utf8
mai_IN.utf8
mai_NP.utf8
mfe_MU.utf8
mg_MG.utf8
mhr_RU.utf8
mi_NZ.utf8
miq_NI.utf8
mjw_IN.utf8
mk_MK.utf8
ml_IN.utf8
mni_IN.utf8
mn_MN.utf8
mnw_MM.utf8
mr_IN.utf8
ms_MY.utf8
mt_MT.utf8
my_MM.utf8
nan_TW.utf8
nan_TW.utf8@latin
nb_NO.utf8
nds_DE.utf8
nds_NL.utf8
ne_NP.utf8
nhn_MX.utf8
niu_NU.utf8
niu_NZ.utf8
nl_AW.utf8
nl_BE.utf8
nl_NL.utf8
nn_NO.utf8
nr_ZA.utf8
nso_ZA.utf8
oc_FR.utf8
om_ET.utf8
om_KE.utf8
or_IN.utf8
os_RU.utf8
pa_IN.utf8
pap_AW.utf8
pap_CW.utf8
pa_PK.utf8
pl_PL.utf8
POSIX
ps_AF.utf8
pt_BR.utf8
pt_PT.utf8
quz_PE.utf8
raj_IN.utf8
ro_RO.utf8
ru_RU.utf8
ru_UA.utf8
rw_RW.utf8
sah_RU.utf8
sa_IN.utf8
sat_IN.utf8
sc_IT.utf8
sd_IN.utf8
sd_IN.utf8@devanagari
se_NO.utf8
sgs_LT.utf8
shn_MM.utf8
shs_CA.utf8
sid_ET.utf8
si_LK.utf8
sk_SK.utf8
sl_SI.utf8
sm_WS.utf8
so_DJ.utf8
so_ET.utf8
so_KE.utf8
so_SO.utf8
sq_AL.utf8
sq_MK.utf8
sr_ME.utf8
sr_RS.utf8
sr_RS.utf8@latin
ss_ZA.utf8
st_ZA.utf8
sv_FI.utf8
sv_SE.utf8
sw_KE.utf8
sw_TZ.utf8
szl_PL.utf8
ta_IN.utf8
ta_LK.utf8
tcy_IN.utf8
te_IN.utf8
tg_TJ.utf8
the_NP.utf8
th_TH.utf8
ti_ER.utf8
ti_ET.utf8
tig_ER.utf8
tk_TM.utf8
tl_PH.utf8
tn_ZA.utf8
to_TO.utf8
tpi_PG.utf8
tr_CY.utf8
tr_TR.utf8
ts_ZA.utf8
tt_RU.utf8
tt_RU.utf8@iqtelif
ug_CN.utf8
uk_UA.utf8
unm_US.utf8
ur_IN.utf8
ur_PK.utf8
uz_UZ.utf8
uz_UZ.utf8@cyrillic
ve_ZA.utf8
vi_VN.utf8
wa_BE.utf8
wae_CH.utf8
wal_ET.utf8
wo_SN.utf8
xh_ZA.utf8
yi_US.utf8
yo_NG.utf8
yue_HK.utf8
yuw_PG.utf8
zh_CN.utf8
zh_HK.utf8
zh_SG.utf8
zh_TW.utf8
zu_ZA.utf8
And these are the settings in System Settings → Regional Settings, which are the only thing I touched (and these are the configurations that I need and want):
Having read the post you linked, I have no idea where to go from here.