<div class="gmail_quote">On Sun, Jan 3, 2010 at 8:12 AM, Jarod Wilson <span dir="ltr"><<a href="mailto:jarod@wilsonet.com">jarod@wilsonet.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><div></div><div class="h5">On Sat, Jan 02, 2010 at 10:57:04PM -0800, Greg Zornetzer wrote:<br>
> Hi all,<br>
> I'm looking at upgrading my myth box from FC9 / Myth 0.21. One of my main<br>
> requirements is that I get firewire to work for recording off a cable box.<br>
> I've pulled down some livecd images of FC12 to test out the firewire<br>
> recording capabilities. I found a rather odd problem.<br>
><br>
> If I use the i686 livecd, I successfully get firewire recordings. If I use<br>
> the x86-64 livecd, I get a zero-length file (I tried multiple times to get a<br>
> recording). I'm using a p2p connection, and the following commands:<br>
><br>
> plugctl -n 1 oPCR[0].n_p2p_connections=1<br>
> test-mpeg2 -r 1 > test.mpg<br>
><br>
> As much as I'd like to switch to x86-64, I'm going to stick with i686 if I<br>
> can't make firewire happy. Unfortunately, I can't seem to activate<br>
> broadcast mode on x86-64 to test that. Has anyone else encountered a<br>
> problem like this? Ideas?<br>
<br>
</div></div>Hrm. I've seen a controller or two that had a faulty dma engine in it,<br>
and use of certain memory regions would cause it to stall out. Its<br>
possible you've got another such controller, and running i386 vs.<br>
x86_64 gives you slightly different dma memory regions allocated to the<br>
card. Please file a bug at <a href="http://bugzilla.redhat.com" target="_blank">bugzilla.redhat.com</a>! Include as many<br>
specifics about the firewire controller and the system its in...<br>
<br></blockquote><div><br> Hi Jarod,<br>I'll see about doing that. In the mean time, I think I'll run 32 bit FC12 for now - I found another person on the wiki who had similar problems with 64 bit.<br>On a related note, thanks very much for all your hard work on the firewire functionality in myth. <br>
-Greg<br></div></div>