Just wondering - HDMI

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So, a week or so back my power supply crapped out on me quite suddenly and unexpectedly. I bought a new PSU, lugged my big ass tower into the living room, where there was a table and a screw driver, changed everything out, and thought to myself "Self, that's a mighty nice widescreen, HD, flat panel TV you got there, and it would look great playing WoW or SCII. We should hook the computer up to the back of the TV using that handy HDMI cable that came with the TV and test it out." I don't know why I was talking to myself or why I was using the royal we, it may be a symptom of sleep dep, but I dutifully moved the cable modem and router to the living room and hooked my computer back up.

Sadly, it wasn't as awesome as I thought. For one thing, it's really frickin' hard to see anything on a computer monitor that's set to optimum resolution on a 30" TV from 12 feet away. You can kind of fix that by going into Windows 7's settings and changing the text size to Largest, but apparently SCII doesn't like Largest and won't display a mouse cursor, meaning that you have to log off and on every time you want to switch between SCII and any other program that you want to be able to read.

Secondly, I could not, for the life of me, get audio on the TV. Windows 7 was damn sure that the audio was going to a digital device and was working flawlessly, but the TV didn't agree. Now, looking at some of the other HDMI threads, I see that many gaming consoles regularly come with HDMI connections, and I'm pretty sure that when I turn down the volume on my Wii games, I do so with the TV remote, not the console remote, so HDMI must carry both video and audio.

I'm not likely to repeat the experiment of moving my computer to the living room (print size not withstanding, the cable jungle was a nightmare), especially since Netflix sent me my streaming disc for my Wii and I can watch whatever the hell I want without needing my computer out there; but does anyone have any ideas as to why it failed?

The computer is running a Gigabyte GeForce 9800GT with part number GV-N98TSL-1GI, the drivers are up to date, and I have the latest Windows 7 updates. As for the TV, it's a Toshiba 30" but I have no clue the model number and I don't want to go check atm.
 
First off, it's a TV, not a computer monitor. TV's have overscan, so you won't see the extreme outer edges of your display that you would if it were a dedicated monitor. Does your TV have a menu option to use it as a monitor? Do your video card drivers have an option to compensate for a TV's overscan? The Intel drivers on my laptop cannot, but Windows Media Center will adjust for overscan itself.

Are you running the HDMI cable straight to the TV or through a stereo receiver? Older receivers that have HDMI inputs require a second audio in (optical or coax) to playback audio through the main speakers. Found out the hard way when I couldn't get a peep out of the brand-new blu-ray player I'd just installed. My receiver just passes the audio from the HDMI on to the TV, where I have to turn it's speakers on and also tell it to use HDMI audio to be able to get sound.

tl;dr: an HDTV isn't good as a computer monitor unless it can be set to use as a monitor instead of a TV.
 
The TV has a Native mode in its picture size options that allowed me to see all of the monitor real estate (when it wasn't in Native mode the Windows taskbar was cut off, among other things. The HDMI cable went straight from the output jack on the video card to the input jack on the TV itself, and the TV is newly bought as of May of this year, sold as a new model by a reputable store. I'm not rich enough to own a stereo.
 

figmentPez

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I've heard getting audio over HDMI from a computer can be problematic. What model video card do you have, and are you running the latest drivers?
 
I've heard getting audio over HDMI from a computer can be problematic. What model video card do you have, and are you running the latest drivers?
The computer is running a Gigabyte GeForce 9800GT with part(model?) number GV-N98TSL-1GI, the drivers are up to date.
 

figmentPez

Staff member
Best I can tell, you need an internal connection from your motherboard/audio card to your video card for it to able to pass through the S/PDIF audio on the HDMI port.
 
Yep. It took until the ATI 4xxx series before you could get native audio via HDMI. Before that you had to connect goofy cables to do it. Something about the 'None Shall Copy' edict.

--Patrick
 
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