>> "root" <no@[EMAIL PROTECTED]
> wrote in message
>> news:fvmc5r$o6u$1@[EMAIL PROTECTED]
>>> Where is a good place to get information on
>>> XP/nvidia/DVI/HDTV? I've got a few issues, and the nvidia
>>> forum is pretty useless.
>>>
>>> I have XP Pro SP2 32 bit, GeForce 8800GTS 320MB, GeForce
>>> 8 series driver, dual DVI, one to console display and one
>>> to Philips HDTV. I set the nvidia control panel to clone
>>> mode, and this works usually, until I set the HDTV to a
>>> new channel or turn it off.
>>> The nvidia driver/firmware
>>> whatever then shuts down the secondary DVI output, so if
>>> I go back to the DVI input on the HDTV there is no
>>> signal.
>>
>> This is done to save power.
>
> You are the first person to have any idea. Sounds reasonable. Just to be
> clear, do you think it's the video card that is trying to save power?
>
>>
>>> The DVI line drop doesn't occur right away, takes
>>> about 5 min. or so. I want to lock the nvidia settings to
>>> clone mode forever; the computer is in a different room,
>>> there is an annoying bit of walking back and forth
>>> sometimes. The nvidia drivers are pretty variable from
>>> one release to the next and none has solved this problem.
>>> At least one of their releases won't detect the Philips
>>> tv at all.
>>
>> One trick would be to use some active HDMI accessory to load down the
>> HDMI
>> output, even when the TV was turned off. I suspect that a HDMI
splitter
>> (they are about $30 on eBay) would do this for you.
>
> Very interesting idea, and again no one has suggested this before.
> The overall idea is that I can run a beyondtv feed on one hdmi input,
but
> be able to use the built-in tuner to watch something else. That, plus
not
> have to set it up every time I turn on the set.
===========================================================
"You are the first person to have any idea."
:-/
I did your searches for you. (in: alt.comp.periphs.videocards.nvidia,
and the nvidia forum..... and the AVS HTPC forum)
Your problem has little (directly) to do with saving power, although they
say it may be triggered by some power-saving scheme on your PC.
I found the specific problem is that your videocard is losing your
display's
"EDID" info ["Extended Display Identification Data"].
I read that ATI cards have handled the EDID issue much easier than the
nvidias, so I'd consider switching it out.
In-depth Nvidia/EDID exploration here:
http://www.geocities.com/jgeneedid/
The bottom line seems to be:
a.. "Contact your display device manufacturer and obtain an updated
firmware
that addresses the EDID problems
a.. Wait for the device drivers from nVIDIA that can address EDID-related
issues
a.. Overwrite the EDID on your display device and or use a hardware device
(see below) to work around the issue caused by the faulty EDID "
a.. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
As another hardware device work-around [made specifically for EDID
issues],
here's a $70 Gefen "DVI Detective".
Gefen sez:
"Once installed and connected, the DVI Detective continually transmits the
EDID to the computer, essentially "tricking" the computer into thinking
that
the video is present, even when it is not connected."
http://www.gefen.com/kvm/product.jsp?prod_id=1378
and another, "DVI Doctor" from www.monoprice.com :
http://www.monoprice.com/products/product.asp?c_id=101&cp_id=10110&cs_id=1011003&p_id=3048&seq=1&format=2
Enjoy.
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