Peter Weissgerber wrote: > I have tried the box now on another PC (VIA KT266 > based mainboard) and have the same problem [only > artifacts when bitrate of channel is > about 5MBit/s, > e.g. for ZDF or WDR Aachen; error messages about "lost > sync"].... > > --- Johannes Stezenbach <js@xxxxxxxxxxx> schrieb: > > Did you try to raise ISO_BUF_COUNT? I don't know > > how to detect missed iso usb packets, but I guess > > that is what happens. > > ... I did try this but it does not help. Maybe the > hardware is simply defective?? Or has anybody a better > idea what is going wrong? I know nothing about the TT USB boxes, you could ask TT support if this is a limitation of the box; or you could try if it works better with Windoze. Could also be a problem with USB isoc xfers, AFAIK some newer boxes use bulk xfers -- maybe there's a reason... Johannes