[mythtv-users] DVI vs. S-Video
Harry Devine
lifter89 at comcast.net
Wed Jan 16 02:46:03 UTC 2008
Phil Bridges wrote:
> On Jan 15, 2008 8:54 PM, Harry Devine <lifter89 at comcast.net> wrote:
>
>> Phil Bridges wrote:
>>
>>> On Jan 15, 2008 7:14 PM, Harry Devine <lifter89 at comcast.net> wrote:
>>>
>>>
>>>> Phil Bridges wrote:
>>>>
>>>>
>>>>> On Jan 14, 2008 8:01 AM, Harry Devine <lifter89 at comcast.net> wrote:
>>>>>
>>>>>
>>>>>
>>>>>> Phil Bridges wrote:
>>>>>>
>>>>>> On Jan 13, 2008 8:36 PM, Harry Devine <lifter89 at comcast.net> wrote:
>>>>>>
>>>>>>
>>>>>> Rich West wrote:
>>>>>> Harry Devine wrote:
>>>>>>
>>>>>> Everyone,
>>>>>>
>>>>>> I currently have an EVGA nVidia based e-GeForce 7100GS video card in my
>>>>>> Myth box, and I'm using the S-Video out to push the TV-Out to my Samsung 46"
>>>>>> DLP HDTV. I've been thinking about this for a few days, and I believe that
>>>>>> I should be using the DVI connection from that card to my TV. I have 2 HDMI
>>>>>> inputs on my TV and 1 is being used to receive signals from my Comcast
>>>>>> Motorola STB.
>>>>>>
>>>>>> I'm a little unsure how to configure my xorg.conf file to do this. Also, I
>>>>>> suppose that I'll have to get a DVI-to-HDMI cable. Am I correct in this?
>>>>>> I'm adding my current xorg.conf file contents below, so if anyone has any
>>>>>> ideas, I'm all ears.
>>>>>>
>>>>>> The title of the Wiki entry is a bit misleading, but check out
>>>>>> http://www.mythtv.org/wiki/index.php/ComponentOut for details on how to get
>>>>>> this set up.
>>>>>>
>>>>>> -Rich
>>>>>>
>>>>>>
>>>>>> Hey Rich!
>>>>>>
>>>>>> I just got around to getting the DVI->HDMI cable hooked up, and I can't get
>>>>>> it working from within Linux. When my Myth box reboots, I can put my TV on
>>>>>> HDMI2 and see the boot up process. However, once the X server starts, I get
>>>>>> nothing. I don't see anything in my /var/log/Xorg.0.log file that indicates
>>>>>> any problem. I tried to follow the link in the Wiki that you sent, as well
>>>>>> as the following article to no avail:
>>>>>> http://www.fedoraforum.org/forum/showthread.php?p=721770#post721770.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> Section "Device"
>>>>>> Identifier "Videocard0"
>>>>>> Driver "nvidia"
>>>>>> VendorName "nVidia"
>>>>>> BoardName "NVIDIA GeForce"
>>>>>> Option "TwinView"
>>>>>> Option "TwinViewOrientation" "Clone"
>>>>>> Option "ConnectedMontior" "CRT, TV"
>>>>>> Option "SecondMonitorHorizSync" "30-50"
>>>>>> Option "SecondMonitorVerRefresh" "60"
>>>>>> Option "TVStandard" "NTSC-M"
>>>>>> Option "TVOutFormat" "Composite"
>>>>>>
>>>>>>
>>>>>> As long as you tell your Xorg to send X out of the "Composite" output
>>>>>> of your card, that's where it will be output.
>>>>>>
>>>>>> Read this: http://gentoo-wiki.com/HOWTO_Xorg_HDTV#Nvidia_Settings
>>>>>>
>>>>>>
>>>>>> Apparently not, because that's what I have (see "TVOutFormat" above) and I
>>>>>> get nothing. I did read that link you sent me (even though I'm on FC6 and
>>>>>> not gentoo), but it didn't really help much. I appreciate you sending it
>>>>>> though. Obviously I'm missing something, but I'm not sure what it is.
>>>>>>
>>>>>> Thanks,
>>>>>> Harry
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>> Are you trying to send your desktop out over the composite output?
>>>>> Why have the DVI->HDMI cable, then? Also, if you read through the
>>>>> sample xorg.conf in the link, you'd see that you need to set the
>>>>> "ConnectedMonitor"to "DFP" or "DFP0" rather than "CRT".
>>>>>
>>>>> xorg.conf is xorg.conf - it's (for the most part) distribution-independent.
>>>>>
>>>>>
>>>>>
>>>>>
>>>> No, I'm trying to send it out via the DVI connector on the GeForce card,
>>>> which is why I got the DVI->HDMI cable. I only changed it to "Composite
>>>> because that was what one of the links sent to me in this thread
>>>> suggested. I changed "ConnectedMonitor" to "DFP0" and "DFP", and I
>>>> still get a blank screen.
>>>>
>>>>
>>>> Any other ideas?
>>>> Thanks,
>>>> Harry
>>>>
>>>>
>>>>
>>>>
>>> Do you still have these lines?
>>> Option "TVStandard" "NTSC-M"
>>> Option "TVOutFormat" "Composite"
>>>
>>> Is the xorg you posted cut-and-pasted? The reason I ask is because
>>> the "Connected Monitor" section is misspelled.
>>>
>>>
>>>
>> It was cut-n-pasted (I see the misspelling. Ooops!), but that option
>> isn't in there any longer. I took it out based on a few other peoples
>> suggestions. Here's the relevant sections as they exist right now:
>>
>> Section "Monitor"
>> Identifier "Monitor0"
>> VendorName "Samsung"
>> HorizSync 30.0 - 50.0
>> VertRefresh 60.0 - 60.0
>> EndSection
>>
>> Section "ServerFlags"
>> Option "blank time" "0"
>> Option "standby time" "0"
>> Option "suspend time" "0"
>> Option "off time" "0"
>> EndSection
>>
>> Section "Device"
>> Identifier "Videocard0"
>> Driver "nvidia"
>> VendorName "nVidia"
>> BoardName "NVIDIA GeForce"
>> Option "RenderAccel" "1"
>> Option "NoLogo" "true"
>> Option "UseEvents" "True"
>> EndSection
>>
>> Section "Screen"
>> Identifier "Screen0"
>> Device "Videocard0"
>> Monitor "Monitor0"
>> DefaultDepth 24
>> SubSection "Display"
>> Viewport 0 0
>> Depth 24
>> Modes "1280x720_60" "720x480_60"
>> EndSubSection
>> EndSection
>>
>> Section "DRI"
>> Group 0
>> Mode 0666
>> EndSection
>>
>> Thanks,
>> Harry
>>
>>
>>
>
> You still need to tell Xorg where to send your output, or it will go
> to the default - CRT VGA.
>
> Try this:
>
> Section "Device"
> Identifier "Card0"
> Driver "nvidia"
> VendorName "nVidia Corporation"
> Option "RenderAccel" "true"
> Option "AllowGLXWithComposite" "true"
> Option "ConnectedMonitor" "DFP"
> #Option "NoLogo" "1"
> EndSection
>
> And see if you get any output on your DVI-connected monitor. You may
> need to replace DFP with DFP0
>
>
OK, that seemed to do it. The screen now shows up, even though it seems
to be kicked over to the left a little more than it used to, and a few
things seemed to be cut off the bottom (but I'm not 100% sure about that
one). All in all, it looks much better. Would that have anything to do
with the modes in the "Screen" section?
It's not a big deal as it's now working as I hoped. Thanks alot for all
of your help and assistance.
Harry
More information about the mythtv-users
mailing list