This is xawtv-3.95.dfsg.1, running on Linux/i686 (2.6.20-16-generic)
X Error of failed request:  XF86DGANoDirectVideoMode
  Major opcode of failed request:  136 (XFree86-DGA)
  Minor opcode of failed request:  1 (XF86DGAGetVideoLL)
  Serial number of failed request:  67
  Current serial number in output stream:  67