I can confirm the black screen after startup of stellarium.
I use locale "da_DK.UTF-8", but if it is set to "C", then stellarium runs fine:
LANG=C stellarium
Even just setting LC_NUMERIC helps:
LC_NUMERIC=C stellarium
This could be a problem with reading non-localized numeric datafiles with an
active locale set.
The application handles some aspects of locale setting in
src/stelutils/Translator.cpp and the attached patch adds a call to set
the locale for number formatting to "C".
--- stellarium-0.9.1.orig/src/stelutils/Translator.cpp
+++ stellarium-0.9.1/src/stelutils/Translator.cpp
@@ -140,6 +140,7 @@
#else
setlocale(LC_CTYPE,"");
#endif
+ setlocale(LC_NUMERIC, "C");
assert(domain=="stellarium");
QString result = bind_textdomain_codeset(domain.toUtf8().constData(), "UTF-8");
assert(result=="UTF-8");
