I recently purchased first generation Air2PC cards off eBay. I knew there might be issues, but it seemed like a low-cost way to experiment with digital / HD TV and that has proven to be true. In fact, the first card worked extremely well, no issues whatsoever, so I bought a second one. The second card, however, takes much longer to initialize and lock up on its startup channel - usually several minutes as compared to less than 30 seconds for the first card I bought. Once initialized, both cards work fine. However, mythbackend gives up after 30 seconds so getting them both initialized is a problem.
I found I could fix that problem by editing 'dvbchannel.h' in libmythtv, the line that reads: "bool TuneTransport(dvb_channel_t& channel, bool all=false, int timeout=300000);" Adding an extra zero to the 'timeout' parameter allows the backend to wait long enough for my slow card to achieve a lock. However, I'm curious if there is an easier way. For example, is there some way to condition the card(s) prior to starting the backend that would allow them to successfully lock up within the default 30 seconds? Also, change of subject, is there some trick to getting XvMC to actually work? When I first tried to use it on two machines, both with 0.18.1, FX5200's and the NVIDIA driver, only the Hardware MPEG checkbox was present on the Playback settings page. On both machines, when that checkbox was checked, playback and live TV would both fail with a message saying that the frontend was unable to initialize the display. After fooling around with the stuff mentioned above, including a recompile of 0.18.1, a checkbox to enable OpenGL vsync suddently appeared on the same settings page as the XvMC checkbox and now XvMC works on that machine. But I don't know why it started working and I haven't been able to duplicate the feat on my other Myth box. Bill _______________________________________________ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
