в локали ru_RU.UTF-8 xdtv вылетает с такими симптомами:
andrew@localhost ~ $ xdtv

This is xdtv 2.4.0pre0 running on Linux/i686 (2.6.16-std26-smp-alt13).
scandir: Нет такого файла или каталога
filename = /home/andrew/.xdtv/xdtvrc
X Error of failed request:  XF86DGANoDirectVideoMode
  Major opcode of failed request:  130 (XFree86-DGA)
  Minor opcode of failed request:  1 (XF86DGAGetVideoLL)
  Serial number of failed request:  13
  Current serial number in output stream:  13
xdtv_v4l-conf had some trouble, trying to continue anyway
*** buffer overflow detected ***: xdtv terminated
======= Backtrace: =========
/lib/libc.so.6(__chk_fail+0x41)[0xb78efdb1]
/lib/libc.so.6(__vsprintf_chk+0x0)[0xb78ef644]
/lib/libc.so.6(_IO_default_xsputn+0xa7)[0xb7886a3e]
/lib/libc.so.6(_IO_vfprintf+0x3621)[0xb7864887]
/lib/libc.so.6(__vsprintf_chk+0xa1)[0xb78ef6e5]
/lib/libc.so.6(__sprintf_chk+0x30)[0xb78ef638]
xdtv(init_windows_labels+0x1279)[0x8092909]

в ru_RU.KOI8-r работает нормально
Steps to Reproduce:
1.export LANG=ru_RU.UTF-8
2.xdtv
3.