id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc,mlocked 4466,MythTV should disable tuner before switching inputs,starz909@…,danielk,"Hello, I came across this problem with the Hauppauge pvr-150 MCE card. It may be reproducable with other ivtv cards, but I don't know. I have a standard analog TV lineup connected to the tuner of the pvr-150, and I have a digital cablebox source connected to the rear inputs of the card. During livetv, if I want to switch to the cablebox, I'd switch the card's inputs. This switching doesn't work anymore because recent ivtv driver versions make it necessary to disable the tuner prior to actually issuing the command to switch inputs. I verified this with a running mplayer and the v4l2-ctl utility. The reason behind this change in driver behavior is to avoid corruption in the mpeg stream. I can't write patches, so I'm asking that Mythtv code be modified such that before mythtv changes from the tuner source to any other source, the tuner is disabled first. I know this is a hardware issue, but there is no sign that this driver change will be repealed. Further, the changed driver has not yet made it into mainline kernel sources, so few people are coming across this problem. For further reference on the subject, please see: http://www.gossamer-threads.com/lists/mythtv/dev/308522 http://www.gossamer-threads.com/lists/mythtv/users/304472 http://www.gossamer-threads.com/lists/ivtv/devel/37242 Best regards, Sam",defect,closed,minor,0.21,mythtv,unknown,medium,invalid,tuner inputs,,0