HDMI connection as primary connection

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gumdigger

418 posts

Ultimate Geek

#24187 17-Jul-2008 14:26

Hi
Just got my parts together and built a htpc, right now i am in software setup stage. I want to connect my HTPC to TV using HDMI cable. i was supplied with the dvi to hdmi adapter and my tv is full HD. i also have a HDMI cable. Now i want to keep this as my permanent connection as in my primary one, like the vga connection displays from the time computer is ON till its in windows.

I am attaching the manual page refering to resolutions supported because it doesnt make sense to me,

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1847 posts

Uber Geek

#148873 17-Jul-2008 15:06

I'm not 100% sure what you want as you haven't actually asked a question, but bear with me.

You should just be able to plug the DVI to HDMI adaptor into the PC and the HDMI cable between the adaptor and the TV and all will be good. Then when in windows if it doesn't look right, set the resolution to match the TV and viola.

Unless of course you're running a graphics card without a DVI connector, in which case, you should upgrade as trying to go from VGA -> DVI -> HDMI defeats the purpose of having HDMI in the first place.

Dingbatt

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#148921 17-Jul-2008 17:27

Different video card but I run my system with the 8500GT permanently connected via hdmi to my TH-42PV70. In the nvidia control panel I chose a resolution of 720p @ 50Hz as this is native for the panel. In your case with a PY800 (lucky bugger!) the native resolution will likely be 1080p @ 50Hz. The overscan can be adjusted from within the control panel as well. With my system I have to have the TV on with the HDMI port selected before I start the computer otherwise I get no display and have to shut the computer down blind.

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gumdigger

418 posts

Ultimate Geek

#148939 17-Jul-2008 18:30

Dingbatt: Different video card but I run my system with the 8500GT permanently connected via hdmi to my TH-42PV70. In the nvidia control panel I chose a resolution of 720p @ 50Hz as this is native for the panel. In your case with a PY800 (lucky bugger!) the native resolution will likely be 1080p @ 50Hz. The overscan can be adjusted from within the control panel as well. With my system I have to have the TV on with the HDMI port selected before I start the computer otherwise I get no display and have to shut the computer down blind.

sorry guys i tend make a simple thing look hard sometime.
Before i try that dingbatt, dont i have to set the resolution to 1125X1080 in the Nvidia Panel , then flick to hdmi port then restart?.

1gkar

722 posts

Ultimate Geek

#148940 17-Jul-2008 18:33

Given the quality of the panel you shouldn't have any issues with 1:1 pixel mapping. But not all the HDMI connections may be capable of proper mapping. On my new 32" Samsung LCDTV I could only get it using HDMI 2 connection.

If you're not sure what pixel mapping is, its when you get fuzzy edges around text, like running a PC monitor off its native resolution.

Inside 'Nvidia Control Panel>change resolution', set the resolution to the EXACT one specified in your TV's manual, I would start with 1125 (1,080) /60p. Don't use any of the Nvidia tools like resize as this will cause the PC to scale the image which is what you don't want. If this does not supply a sharp image, try another HDMI input.

If this works, try the 50p resolution. The reason I recommend to start with the 60p is on my TV I get tearing with videos, especially with fast moving objects like people running.

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1gkar

722 posts

Ultimate Geek

#148949 17-Jul-2008 18:46

Just to qualify a couple of things. If you are getting correct pixel mapping, you shouldn't suffer overscan, which is usually a by-product of scaling. Adjust the resolution with the 'change resolution' not the 'change signal or HD format'.

Also, 50hz vertical resolution is ideal for PAL videos as motion blur is usually slightly visible with 60hz. This is only relavent for MPEG2 records (eg. Prime) as it doesn't affect HD *.ts Freeview files. Alas, I can't use that as my panel gets the dreaded tearing when set to it. But your panel appears like it should be fine. Enjoy.

Dingbatt

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#148962 17-Jul-2008 19:36

gumdigger:

sorry guys i tend make a simple thing look hard sometime.
Before i try that dingbatt, dont i have to set the resolution to 1125X1080 in the Nvidia Panel , then flick to hdmi port then restart?.

Starting to get beyond my level of experience sorry. Because my card is a Winfast 8500GT with hdmi and DVI out I had the luxury of setting up the plasma as a clone to my samsung monitor and getting its settings sorted out.
Pixel mapping would be nice but I had to scale because the standard sizing left either the taskbar off the edge of the picture, or with a black border around the outside. The latter being particularly unacceptable from the point of view of burn in.

As far as I know 1125 is computer-speak 1080 so it's not 1125X1080 but 1125(1080), two names for the same thing.

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1gkar

722 posts

Ultimate Geek

#148973 17-Jul-2008 19:54

The only resolutions necessary for correct HD playback are:

1080p or 1080i = 1980x1080
720p = 1280x720x50hz or 60hz, 1368x768x60hz (this is the resolution to set your graphics card to if using the D-Sub or VGA port on the LCDTV, according to your manual. All other PC resolutions are non-TV ones, but ones designed for PC monitor use.

gumdigger

418 posts

Ultimate Geek

#148985 17-Jul-2008 20:24

so its not 1125 X 1080 but 1920 X 1125?
i plugged my existing vga socket out of the graphic card and replaced with the dvi-hdmi adapter then plugged the other side into hdmi 2. then flicked to hdmi port first then started my pc. no signal. it should atleast show the bios screen rite? if the resolution isnt supported then it wont show the windows part. but i have absolute no picture

1gkar

722 posts

Ultimate Geek

#148993 17-Jul-2008 20:38

gumdigger: so its not 1125 X 1080 but 1920 X 1125?
i plugged my existing vga socket out of the graphic card and replaced with the dvi-hdmi adapter then plugged the other side into hdmi 2. then flicked to hdmi port first then started my pc. no signal. it should atleast show the bios screen rite? if the resolution isnt supported then it wont show the windows part. but i have absolute no picture

NO. The resolution is as I described above. Don't even think about 1125; whatever that figure means, I have no idea.

Have you set the HDMI 2 input in your LCDTV's menu. Check your manual. If you're not having any success, maybe you should start with the easier option of setting up the D-Sub (PC or VGA) port.

gumdigger

418 posts

Ultimate Geek

#148996 17-Jul-2008 20:45

1gkar:
gumdigger: so its not 1125 X 1080 but 1920 X 1125?
i plugged my existing vga socket out of the graphic card and replaced with the dvi-hdmi adapter then plugged the other side into hdmi 2. then flicked to hdmi port first then started my pc. no signal. it should atleast show the bios screen rite? if the resolution isnt supported then it wont show the windows part. but i have absolute no picture

NO. The resolution is as I described above. Don't even think about 1125; whatever that figure means, I have no idea.

Have you set the HDMI 2 input in your LCDTV's menu. Check your manual. If you're not having any success, maybe you should start with the easier option of setting up the D-Sub (PC or VGA) port.

Currently the tv is connected via vga cable, the problem is i have no chance of changing the resolution to 1280X1080 because as soon as i flick to that i get blank screen (not supported by vga)

1gkar

722 posts

Ultimate Geek

#149018 17-Jul-2008 21:49

gumdigger:
1gkar:
gumdigger: so its not 1125 X 1080 but 1920 X 1125?
i plugged my existing vga socket out of the graphic card and replaced with the dvi-hdmi adapter then plugged the other side into hdmi 2. then flicked to hdmi port first then started my pc. no signal. it should atleast show the bios screen rite? if the resolution isnt supported then it wont show the windows part. but i have absolute no picture

NO. The resolution is as I described above. Don't even think about 1125; whatever that figure means, I have no idea.

Have you set the HDMI 2 input in your LCDTV's menu. Check your manual. If you're not having any success, maybe you should start with the easier option of setting up the D-Sub (PC or VGA) port.

Currently the tv is connected via vga cable, the problem is i have no chance of changing the resolution to 1280X1080 because as soon as i flick to that i get blank screen (not supported by vga)

Why are you trying to change to that resolution? It is NOT one I have specified.

Again,

Set to 1980x1080@60hz if using HDMI.

Set to 1366x768@60hz if using PC (D-sub).

gumdigger

418 posts

Ultimate Geek

#149027 17-Jul-2008 22:31

1gkar:
gumdigger:
1gkar:
gumdigger: so its not 1125 X 1080 but 1920 X 1125?
i plugged my existing vga socket out of the graphic card and replaced with the dvi-hdmi adapter then plugged the other side into hdmi 2. then flicked to hdmi port first then started my pc. no signal. it should atleast show the bios screen rite? if the resolution isnt supported then it wont show the windows part. but i have absolute no picture

NO. The resolution is as I described above. Don't even think about 1125; whatever that figure means, I have no idea.

Have you set the HDMI 2 input in your LCDTV's menu. Check your manual. If you're not having any success, maybe you should start with the easier option of setting up the D-Sub (PC or VGA) port.

Currently the tv is connected via vga cable, the problem is i have no chance of changing the resolution to 1280X1080 because as soon as i flick to that i get blank screen (not supported by vga)

Why are you trying to change to that resolution? It is NOT one I have specified.

Again,

Set to 1980x1080@60hz if using HDMI.

Set to 1366x768@60hz if using PC (D-sub).

yes i understand but, ok say i am currently connected to pc d-sub(1366x768), now i decide to use HDMI . but before doing that i have to change the resolution right?. so i go to nvidia display manager and creat a custom resolution of 1980x1080@60hz, now before i create it i test it to see if it works. as soon as i hit test screen goes BLANK! obviously this will happen because i am doing all this through a pc d-sub. the question IS then how do i set the resolution so i can use HDMI??.

1gkar

722 posts

Ultimate Geek

#149063 18-Jul-2008 07:48

Okay. Setup a temporary resolution that the TV can handle using the PC input. Lets go for 720 x 576 x 60hz. This equates to 576p. Your PC input should be able to handle that. If you get a picture, change the input to HDMI & set that up inside the LCDTV's menu options.

You can then attempt to set up the next one, if it works. I'd try 720p or 1366 x 768 x60hz. If that doesn't work, try 1280 x 720 x 60hz (genuine 720p resolution).

Or can you set up a secondary monitor & set that to its default resolution (eg. 1280 x1024) with the monitor as the primary display?

To be honest, I don't know why you aren't getting a picture with 1980 x 1080 with the PC input as the 9600 card should be capable of it.

sbiddle

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#149068 18-Jul-2008 08:02

Have you tried just botting the PC up with the HDMI cable plugged in?

By default Windows should just boot up with a safe resolution and allow you to make changes - there is no need to boot into VGA first.

Nety

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#149092 18-Jul-2008 09:48

yip with sbiddle on this. You should not need to set anything up. HDMI is able to tell the video card what it can handle. Just unplug the VGA, plug in the HDMI and boot.

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