FWIW, in my distro (debian jessie, using LXDE), I have those btc strings but not the syntax error. What's your distro?
I stumbled over the following error message after installing the current version (0.11.0) of Bitcoin Core for Linux32:
Error: Couldn't look up rules 'xorg', model
Qt: Failed to compile a keymap
After bitcoinqt has started, keyboard is not working inside of bitcoinqt.
The solution for this is simple since it is not a bitcoinqt-problem (http://lists.qt-project.org/pipermail/interest/2013-October/009303.html):
- open "/usr/share/X11/xkb/rules/base" or similar
- search for line "btc5113rf btc5126t btc9000 btc9000a btc9001ah btc5090\"
- insert a space between "btc5090" and the "\"
save it and you are done.
Bye,
cu