diff -N'urpx*~' vdr-1.6.0/dvbdevice.c vdr-1.6.0-decoder/dvbdevice.c
--- vdr-1.6.0/dvbdevice.c	2008-02-09 18:11:44.000000000 +0200
+++ vdr-1.6.0-decoder/dvbdevice.c	2008-05-05 05:35:18.000000000 +0300
@@ -490,7 +490,7 @@ void cDvbDevice::MakePrimaryDevice(bool 
 
 bool cDvbDevice::HasDecoder(void) const
 {
-  return fd_video >= 0 && fd_audio >= 0;
+  return fd_video != -1 && fd_audio != -1;
 }
 
 bool cDvbDevice::Ready(void)
@@ -952,7 +952,7 @@ bool cDvbDevice::CanReplay(void) const
 
 bool cDvbDevice::SetPlayMode(ePlayMode PlayMode)
 {
-  if (PlayMode != pmExtern_THIS_SHOULD_BE_AVOIDED && fd_video < 0 && fd_audio < 0) {
+  if (PlayMode != pmExtern_THIS_SHOULD_BE_AVOIDED && fd_video == -2 && fd_audio == -2) {
      // reopen the devices
      fd_video = DvbOpen(DEV_DVB_VIDEO,  CardIndex(), O_RDWR | O_NONBLOCK);
      fd_audio = DvbOpen(DEV_DVB_AUDIO,  CardIndex(), O_RDWR | O_NONBLOCK);
@@ -1008,7 +1008,7 @@ bool cDvbDevice::SetPlayMode(ePlayMode P
     case pmExtern_THIS_SHOULD_BE_AVOIDED:
          close(fd_video);
          close(fd_audio);
-         fd_video = fd_audio = -1;
+         fd_video = fd_audio = -2;
          break;
     }
   playMode = PlayMode;