<div dir="auto"><div><br><br><div class="gmail_quote"><div dir="ltr">On Tue, Nov 27, 2018, 8:06 AM Ian Campbell <<a href="mailto:ijc@hellion.org.uk">ijc@hellion.org.uk</a> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Wed, 2018-11-28 at 01:49 +1300, Stephen Worthington wrote:<br>
> But it usually does not matter, as the kernel has a<br>
> fixed order for how it enumerates the PCIe and PCI slots. So as long<br>
> as you do not move the cards, they will always be in the same<br>
> order. You will likely not be moving the cards around in the slots<br>
> for years, unlike with USB tuners that tend to get unplugged for some<br>
> reason or other and then you forget which USB socket they were<br>
> in.<br>
<br>
Quite a few (i.e. all the Hauppauge ones I've ever had) PCI capture<br>
cards are really just a PCI USB controller with a USB tuner (or two) on<br>
them. In that case you become susceptible to the async USB enumeration<br>
again.<br>
<br>
(Historical note: The kernel did once upon a time change how it<br>
enumerates PCI buses by default, from breadth first to depth first, but<br>
it was so long ago, in the 2.4.x era, that there is no way anyone here<br>
is running a kernel old enough for it to matter. Anyone who is<br>
nostalgic can use pci=bfsort to get the old behaviour ;-))<br>
<br>
Ian.<br>
<br>
_______________________________________________<br>
mythtv-users mailing list<br>
<a href="mailto:mythtv-users@mythtv.org" target="_blank" rel="noreferrer">mythtv-users@mythtv.org</a><br>
<a href="http://lists.mythtv.org/mailman/listinfo/mythtv-users" rel="noreferrer noreferrer" target="_blank">http://lists.mythtv.org/mailman/listinfo/mythtv-users</a><br>
<a href="http://wiki.mythtv.org/Mailing_List_etiquette" rel="noreferrer noreferrer" target="_blank">http://wiki.mythtv.org/Mailing_List_etiquette</a><br>
MythTV Forums: <a href="https://forum.mythtv.org" rel="noreferrer noreferrer" target="_blank">https://forum.mythtv.org</a></blockquote></div></div><div dir="auto"><br></div><div dir="auto">In previous set up with two sources, and cards staying in the same slots, enumeration would, on occasion, be different. Stephan, are you saying that is now different?</div><div dir="auto">Of four tuners, there will be one HP1250, one HP winTV, and two PCi800's, the last two of which may have no differences, but I may try and find some (for hind-sight diagnostics)</div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
</blockquote></div></div></div>