[PhoenixScreen]

I would appreciate any help that can be given here.


I've got one of the new 45" Sharp LC-45GX6U LCD televisions. The LCD panel has a resolution of 1920x1080. It looks like I'm going to need to direct connect to the panel in order to create a 1920x1080 "desktop" for computer use. This is because the AVC box that comes with the unit does not support computer resolutions higher than 1280x1024 (or 1280x768).


I've got a BFG 6800 OC video card and intend on using the DVI port on the video card. Note....the card is a single-link DVI port. I've installed the latest version (61.77) of the ForceWare drivers.


Now....how do I need to setup my card to drive this baby at 1080p? I understand that I may need to do a "reduced blanking interval" in order to push 1080p across a single-link connection. It looks like this may be possible to do through the latest nvidia drivers as can be seen in the documentation on the following nvidia site:

http://www.nvidia.com/object/advanced_timings


I'm hoping to avoid using powerstrip, as it doesn't strike me as being very "novice" friendly. (I'm a software developer....so I'm technically competent....just never messed with these sort of settings before).


Any instructions, recommendations, etc. on how to make this work would be appreciated.

 

[shigaloo]

my understanding is that 1080p @ 60hz is to much bandwidth for a single link DVI, so why dont you try a lower refresh rate


if that doesnt work you can lend me your display for a while and I'll figure it out for ya

 

[PhoenixScreen]

Okay....what's your address?


But seriously.......I understand that single-link DVI can handle resolutions as high as 1920x1200 if you use the "reduced blanking interval". I figure I've got the best chance of finding someone up here that knows what's going on and "how to do it".


Thanks for the input!

 

[shigaloo]

sorry the only displays i've delt with that resolution have been analog


you might want to check a really long thread in one the flat panel display forums regarding 23" lcds


I would suggest hooking up the 45" on the dvi port and another monitor on the other and playing around until you get somethign that works, i have always found powerstrip easier to work with than nvidia's control panel for this sort of thing

 

[Kei Clark]

Quote:

my understanding is that 1080p @ 60hz is to much bandwidth for a single link DVI, so why dont you try a lower refresh rate

No, it's not. I run 1920x1200 without any problems and did not need to install powerstrip because the monitor sends EDID info to to the PC. I use a dual link DVI cable but that's not necessary as most consumer video cards on the market do not have dual-link capabilities.


PhoenixScreen,


Have you tried simply connecting the two devices yet?

 

[PhoenixScreen]

Ms. Clark,


Insightful question. And....the answer is no. I'm waiting until tomorrow evening when I have a DVI switch at my disposal. We've got a bit of discussion on this issue going on in the Plasma and LCD Flat panels display forum. One individual reported that using an nvidia 5200 card's DVI connection, he was unable to make a successful connection using nvidia's default 1920x1080 60hz settings. Apparently, using powerstrip to play with the settings, he was able to make it work. However, he has since taken down the system in question and could not report his settings.


As soon as I have the DVI switch, I'm going to give it a try myself. Based on what I've read though, it sounds like normal 1080p required a dual-link connection, unless you change properties like the blanking interval.


I'm hoping someone with experience can share so that I can get my system up and working smoothly tomorrow evening.


Shigaloo,


Funny you should mention using the 2 monitor approach. I've found that easier...and I've found that for some reason, when the 45" LCD is the secondary monitor, nVidia's drivers permit me more configuration options (such as refresh rates)! Maybe when it's the only monitor they're afraid of loss of view?


PhoenixScreen

 

[chavel]

As of this time both PhoenixScreen and and Laser Edge have both been successful in creating 1080P desktops on their Sharp LC-45GX6U LCDs. I should mention that Sharp, who I understand shares the technology with Pioneer, uses an avc box to drive their display. Unfortunately, the avc limits the pc input to 1280X768 60 Hz resolution so the only way to get a 1080P desktop so far is to first hook up the pc to the avc at 1280X768 or 1280X720 and then switch to the display dvi input bypassing the avc. After syncing at the lower res. 1920X1080P 60 Hz is added and away you go. The other 2 members have 1080P desktops and both are using NVDIA 6800 series cards. I have a FX5200 chaintech card and have had no luck in a t least a 1/2 dozen attempts to get synced to the panel directly. One other person did get a 5200 series card to work but it was at a slightly lower refresh rate and I believe he was using powerstrip. Can anybody suggest a strategy to get a 5200 series NVIDIA video card synced up with the Sharp LC-45GX6U using powerstrip?