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<blockquote data-quote="te3hpurp" data-source="post: 473169" data-attributes="member: 82806">Hi.I have pinnacle usb tuner pctv 70e.On every restart of the htpc it changes it's &quot;instance id&quot; in device manager. So MP detects it and in database in cards table new tuner is added and newly added card has no channels attached and scanned. Previous instance of the tuner is marked as unknown. So i have to set up channels for the tuner after every boot of htpc.Is this common behavior of Ms windows and can it be prevented somehow.?regards,*******************edit:Okay.I have a hint for the solution. But it need some testing. I changed USB port for that tuner one or twice in the past and every time windows has created new devicepath with new instance id. In win registry there are now three of these for this tuner. I removed two of themwhich are not valid right now. It seems to work, but i need some tsting to do, before sure.It probably is not MP issue at all.If there is more than one device path in win registry then windows can't decide in startup what to choose and then it picks one. If it differs the one in cards table, then new card is added.regards.</blockquote>

[QUOTE="te3hpurp, post: 473169, member: 82806"] Hi. I have pinnacle usb tuner pctv 70e. On every restart of the htpc it changes it's "instance id" in device manager. So MP detects it and in database in cards table new tuner is added and newly added card has no channels attached and scanned. Previous instance of the tuner is marked as unknown. So i have to set up channels for the tuner after every boot of htpc. Is this common behavior of Ms windows and can it be prevented somehow.? regards, ******************* edit: Okay. I have a hint for the solution. But it need some testing. I changed USB port for that tuner one or twice in the past and every time windows has created new devicepath with new instance id. In win registry there are now three of these for this tuner. I removed two of them which are not valid right now. It seems to work, but i need some tsting to do, before sure. It probably is not MP issue at all. If there is more than one device path in win registry then windows can't decide in startup what to choose and then it picks one. If it differs the one in cards table, then new card is added. regards. [/QUOTE]

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