On Thu, Oct 29, 2009 at 1:33 AM, Bob Cunningham <rcunning@xxxxxxx> wrote: > I spoke too soon: Switching between SD and HD channels (or vice-versa) > always works the first time, but generally dies the next time I try. The > behavior is very inconsistent: If I switch from SD to HD 720p or higher, > the tuner goes away the next time I try to tune an SD channel. If I switch > between SD and 480i HD channels, I can do so up to 4 times before it stops > working. > > I can switch among SD channels with no problem, and I can switch between HD > channels of any resolution with no problem. Only switching back and forth > between HD and SD causes the problem, and it always happens, sooner or > later. > > Is there a way to force a "quick & dirty" device reinitialization? Right > now, I'm killing mythfrontend and mythbackend, re-plugging the HVR-950Q, and > restarting mythbackend and mythfrontend. Probably overkill. Is there an > easier way? In this context, we are not talking about SD versus HD - we're talking about analog versus digital. You should have no trouble switching between SD ATSC channels and HD ATSC channels (since the hardware literally cannot tell the difference). However, it's not *too* surprising to find issues going back and forth between analog and digital. Are you sure you put both the analog and digtial video sources into the same recording group? If not, it's possible that MythTV will attempt to use both the analog and digtial parts of the card at the same time, which is not permitted by the hardware. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html