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PostPosted: Fri Jul 09, 2004 8:39 pm 
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Joined: Fri Jul 09, 2004 8:10 pm
Posts: 14
I tried Knoppmyth last night and made great progress. Very cool! I have a few issues I hope to get some help with. To start with, this is my hardware:

Pentium III 1Ghz. 256 Mb RAM. NVidia GeForce2 MX440. Hauppauge WinTV-PVR250. Used install-nvidia.sh to get the "nvidia" driver. Regular analog Sony Trinitron TV, about ten years old.

And here are the issues:

1) The picture is not quite fullscreen; there's a black border on the sides, top, and bottom. Bigger on the sides. This does not happen in regular TV watching.

2) The picture is not rectangular. The sides are wavy and tilted in toward the top.

3) The KnoppMyth screen on ctrl-alt-F7 looks fine, but all the text-only screens (ctrl-alt-f1, ctrl-alt-f2) have a problem that looks a lot like when the vertical hold on an old TV was off--the picture scrolls up off the screen really fast. In this case it's at a slight diagonal. Interestingly, the opposite was true when I was briefly on the "nv" driver ... the txt screens were fine, but the KnoppMyth screen had a vertical-hold problem.

4) No program data. I'd like to set up DataDirect from zap2it.com, and I understand I can do that with mythtv-setup ... but I have no CLI I can use. Is there any way to do this before I fix problem #3 above?

Thanks,
Matt

EDIT: two additions. One, the nvidia card has a tv-out. And two, I am using the sample XF86Config-4 provided for nvidia's with tv-out. Thanks.


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PostPosted: Fri Jul 09, 2004 9:52 pm 
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
it sounds like a timing problem, which is pretty typical if your mode lines are a little off. Try the alternate modelines listed in my XF86Config-4 here - http://mysettopbox.tv/phpBB2/viewtopic.php?t=1150

I can't claim credit for these since I hijacked them from another thread here, but I can say that they work MUCH better for me.

BTW - Mention your local TV standard when posting these questions! I'm guessing NTSC here from other clues...


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PostPosted: Sat Jul 10, 2004 1:00 am 
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Joined: Mon Oct 06, 2003 10:38 am
Posts: 4978
Location: Nashville, TN
also you can't run mythtv-setup from a console. it has to be run from an xterm cause it needs X to run.

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Have a question search the forum and have a look at the KnoppMythWiki.

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 Post subject: NTSC; what xterm?
PostPosted: Sat Jul 10, 2004 10:00 am 
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Joined: Fri Jul 09, 2004 8:10 pm
Posts: 14
I guess my tv standard is NTSC (this is US). Sorry, I know nothing about TV's, so if there is any more complication to this question than US=NTSC, I don't know.

OK, and here's another example of how little I know. How do I get to an xterm to run myth-setup? The only graphical screen I have is the mythtv screen, and I don't see a way to get a terminal there. And how do I edit my XF86Config-4 if I can't get to one of the CLI screens and see what's happening?

Thanks,
Matt


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PostPosted: Sat Jul 10, 2004 11:09 am 
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Joined: Fri Apr 02, 2004 10:08 am
Posts: 1637
Location: Virginia, USA
Quote:
OK, and here's another example of how little I know. How do I get to an xterm to run myth-setup?


While you're in the MythTV menus, keep hitting escape until it asks if you really want to quit. Say yes, and you'll be at the Knoppmyth desktop. Left-click at the bottom of the screen, and a pop-up menu should appear, which will let you start up an Xterm terminal. Once that's open you can run myth-setup or su to root and edit your /etc/X11/XF86Config-4 file.


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 Post subject: modelines
PostPosted: Thu Jul 15, 2004 7:33 pm 
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Joined: Fri Jul 09, 2004 8:10 pm
Posts: 14
Thanks to everyone. I've managed to make some progress but I'm scared to work on the modelines since I don't really understand what's going on. The problem here is that my command-line screens don't work right, I can't read them, so I don't want to ruin my XF86Config-4 and then not be able to edit it again.

I checked out tjc's XF86Config-4 example, one basic question worries me: in the "Monitor" section, there are some lines I don't even have. They seem to depend on the kind of TV you're on, and/or were generated automatically by "ddc". They are:

VendorName "EPI"
ModelName "EPId790"
DisplaySize 271 204 # 75 DPI @ 800x600
HorizSync 30 - 95 # DDC-probed
VertRefresh 50 - 160 # DDC-probed
# These are the DDC-probed settings reported by your monitor.
Modeline "640x480" 25.175 640 664 760 800 480 491 493 525 #60Hz
Modeline "800x600" 40.12 800 848 968 1056 600 601 605 628 #60Hz

(and then a bunch of other modelines follow). So here's my question: do I just copy these lines verbatim, or do I have to figure out the ones that work specifically for my TV?

Thanks,
Matt


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PostPosted: Thu Jul 15, 2004 8:59 pm 
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
You've confused the twinview (dual headed, one monitor and one TV) setup with the TV only setup. ALWAYS READ TO THE END OF THE THREAD! You'll find TWO (2) distinct XF86Config-4 samples. Look for the one labeled "Posted: Sun May 16, 2004 1:57 pm Post subject: Switching to pure TV out". The timings you were looking at are for the monitor in a Twin-Head setup, NOT the TV. DDC doesn't work with TVs, it only works with "Plug-N-Play" monitors. Ignore any references you see to it. The bit you really want is these two mode lines:
Code:
Modeline "640x480" 25.175 640 664 760 800 480 491 493 525 #60Hz
Modeline "800x600" 40.12 800 848 968 1056 600 601 605 628 #60Hz

Just add them to the XF88Config-4 you made from the /etc/X11/XF86Config-4.nvidia-tvout.sample and let the X server pick them if appropriate. For TV only I also ripped out any modelines for resolutions higher than 800x600 and anything else I wasn't going to use.


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PostPosted: Sun Jul 18, 2004 12:25 pm 
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Joined: Fri Jul 09, 2004 8:10 pm
Posts: 14
Thanks. Actually it didn't help, but I know why ... I had forgotten to use the nvidia-tvout sample file. So as it turned out, my modelines were exactly the same as your examples.

I switched to the tvout sample file, and edited it with your corrections, but I still have the same problems. They are:

1) the ctrl-alt-f1, ctrl-alt-f2, etc. command-line only screens have a vertical-hold-like problem. The display flips up the screen rapidly. When there's more than a line or two, I can't figure out what it says.
2) The gui screen only uses a portion of the tv screen. There's an unused black border around the picture of about 2.5cm on the left, 1 cm bottom and right, and 0.5cm top.

To recap, this is knoppmyth r4v4.1, hauppauge wintv-pvr250, nvidia geforce2 mx400 64Mb. I'm in the US so my tv stqandard is NTSC. At this point, since knoppmyth is basically working, I care a lot more about issue #2 than issue #1.


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 Post subject:
PostPosted: Sun Jul 18, 2004 2:41 pm 
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Joined: Mon Oct 06, 2003 10:38 am
Posts: 4978
Location: Nashville, TN
issue #1 is a known issue, and not really sure if there is a fix.

issue#2 you need to search for nvtv. this is the way to get overscan on gforce2 boards. it should be available via apt-get.

_________________
Have a question search the forum and have a look at the KnoppMythWiki.

Xsecrets


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