<br><br><div class="gmail_quote">On Fri, Nov 20, 2009 at 9:49 AM, Johnny Walker <span dir="ltr"><<a href="mailto:johnnyjboss@gmail.com">johnnyjboss@gmail.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;">
I've got the HD-PVR running on Component capture of a Motorola DCX3200<br>
on a dedicated backend.<br>
<br>
I've got a dedicated frontend using VDPAU and 0.22 compiled from source.<br>
<br>
Channel 222 is CNN Headline News (love my Robin Meade). I am seeing<br>
some sort of video noise or distortion across what seems to be the<br>
very top pixel of my playback image. This happens in LiveTV and also<br>
on Recording.<br>
<br>
This morning I used the Shutdown-Menu on the Motorola DCX3200 to tell<br>
the STB that my TV only handles 1080i and 720p which finally got me a<br>
full screen image on my Samsung LCD Television. Now that Samsung is<br>
connected to frontend using the VGA dsub. The max resolution on this<br>
Tv is 1368x768 so I wasn't going to mess with the HDMI out on my<br>
frontend's motherboard.<br>
<br>
The motherboard is an ASUS with an onboard nVidia as follows from lspci:<br>
<br>
02:00.0 VGA compatible controller: nVidia Corporation C77 [GeForce<br>
8300] (rev a2)<br>
<br>
VDPAU seems to be working ok out of the box - the distro is MythBuntu 9.10.<br>
<br>
I tried adjusting the Vertical offset in the Setup-->Playback menu. I<br>
moved it from 0 through 10 (trying each incrementally) and I wasn't<br>
able to notice any difference. It does seem that each time I invoke<br>
the LiveTv mode I may get a more or less dramatic experience of this<br>
noise.<br>
<br>
Does anyone know what this is and how to go about resolving it?<br><br></blockquote><div><br>Sounds like the Closed Caption data. You don't normally see it because of overscan. Try the newest NVidia drivers and see if you can get it to overscan the TV output just a little to get that row of pixels out of the visible area of the screen. When using VDPAU, you can't use the scaling and such built into Myth from what I've read on the list, so you need to use the drivers to do it. Both of my systems overscan way to much by default, so I use the "Overscan Compensation" in the Nvidia X setup utility to set it so that I just just a little overscan, so I don't see that line but I can see all of the image. <br>
<br>You might have more luck getting overscanning on HDMI as the VGA output might not support it (it's not generally done on computer monitors). Modern video cards like the 8300 work pretty much out of the box with HDMI. I didn't do any setup to get it working on my machine other than making sure the NVidia driver was installed. Even BIOS/POST show up over HDMI now. One of my frontends uses an Asus M3N78 with the onboard 8300 chip. Works great with HDMI. I'm not using HDMI audio, so I can't speak to that. That TV is just using the TV speakers, so I used analog stereo out for it. <br>
</div></div><br>