pixel perfect 1366x768 through VGA?

hardworkerR · 06-29-06, 01:29 AM

Hi All,

This is my first post in the forum. I have read some threads related to the pixel-perfect display from a PC to a 1366x768 LCD TV. However, seems to me that this resolution is only possible through the use of DVI and not analog D-SUB VGA port. Do you guys know what "common" display cards can do 1366x768 resolution through analog D-SUB VGA (any ATI or nVidia)? Thank you.

walford · 06-29-06, 07:13 AM

Since 1366x768 is a common PC resolution all video cards should be capable of it. VGA is perfectly capable of handling high resoltuion pixel detail after all CRT PC monitors using VGA have been in use for years that are capable of displaying very fine detail text. Just because stairstepped analog wave forms are used to describe the pixel content instead of ones and zeros does not imply that it is not accurate. I used a mannifying glass on my 19" 1240x1024 flat panel to examine the pixel patters of small font text and could find absolutly no differnce between using the VGA or DVI interface. I found that examining the text the top of a lower case e is very usefull for checking the pattern detail.

Ozy666 · 06-29-06, 12:44 PM

An alternating checkerboard of white and black pixels can be used to test for 1:1 pixel mapping. Accurate mapping will show a uniform grey, non-pixel perfect mapping will show bands lf light and dark.

Ozy

hardworkerR · 06-29-06, 08:19 PM

Quote:

Originally Posted by walford

Since 1366x768 is a common PC resolution all video cards should be capable of it. VGA is perfectly capable of handling high resoltuion pixel detail after all CRT PC monitors using VGA have been in use for years that are capable of displaying very fine detail text. Just because stairstepped analog wave forms are used to describe the pixel content instead of ones and zeros does not imply that it is not accurate. I used a mannifying glass on my 19" 1240x1024 flat panel to examine the pixel patters of small font text and could find absolutly no differnce between using the VGA or DVI interface. I found that examining the text the top of a lower case e is very usefull for checking the pattern detail.

Thank you for your reply. As I have read from other threads in this forum, the problem of 1366x768 resolution not being so "normal" is that 1366 is not divisible by 8 (1366/8 = 170.75). Common resolutions supported by most VGA cards requires that the resolution be divisible by 8. Therefore, I would like to know whether you know of any display card capable of such "non-normal" resolutions through analog VGA.

Favelle · 06-29-06, 09:38 PM

1366 x 768 is NOT a common PC rez. 1366 is NOT divisible by 8, therefore, it is NOT common.

Most people use 1368 x 768 for VGA. That's what I use and I don't notice any difference. I have three computers using the same 32" LCD screen and one is DVI, and two are VGA. I don't notice ANY difference when switching between the DVI (which is 1366 x 768) and the VGA (1368 x 768).

walford · 06-29-06, 10:23 PM

I admit it does not seem to make sense but WXGA is defined as 1366x768 and not 1368x768. I checked a couple of sites using google and the all said the same. If it was not the case then there would be no reason for any manufacturer to make units with 1366x768 instead of 1368x768. I believe that the 1366 standard came form dividing 768 by 9 and multiplying by 16 indstead of trying to exactly allocate 8 pixels per character in a row.

hardworkerR · 06-29-06, 11:18 PM

Thank you guys for your replies.

walford: yes, 1366 was obtained by 768/9*16, that is understandable. The problem is that most (if not all) VGA PC outputs require to use resolutions divisible by 8. So, i wanted to know if there exists any display card that could output such "non mod 8" resolutions.

Favelle: thanks for your info. I am using a Proview RX326 LCDtv which i couldn't get a pixel perfect display by using 1368x768 through analog VGA. Do you mind telling what LCD tv you are using, and also the timing values you used for 1368x768 analog vga?

Ozy666 · 06-29-06, 11:59 PM

Some of the Matrox cards can apparantly do it:

http://www.matrox.com/mga/pid/produc...comparison.pdf

Ozy

mismjy1 · 07-04-06, 02:15 AM

I am definitely not as engaged in this field as others here, but I have to put in a vote for DVI. I have a Panny plasma, and fed it through VGA for six months from an ATI 9600, then later an x1600 card. When I used the VGA port, Windows did not recognize the monitor, and I could never get anything close to 1:1 mapping whether through Catalyst, Powerstrip, etc. The image would show up offset, wrong size, weird artifacts, etc.

When I finally plunked down the $150 for a DVI card for my plasma, it worked like magic. Made two changes to Catalyst (no scaling, 3:2 pulldown detect) - I got a wonderful, clear desktop and movies look fantastic (using PowerDVD decoder). I'm actually running at 1360x768 (6 black pixels = 0.4% of screen) but the results are so great that I'm not going to touch it.

I'm sure there are others who have a great result with VGA but to me DVI is a no-brainer if you have the option.

hardworkerR · 07-04-06, 09:47 PM

Quote:

Originally Posted by mismjy1

I am definitely not as engaged in this field as others here, but I have to put in a vote for DVI. I have a Panny plasma, and fed it through VGA for six months from an ATI 9600, then later an x1600 card. When I used the VGA port, Windows did not recognize the monitor, and I could never get anything close to 1:1 mapping whether through Catalyst, Powerstrip, etc. The image would show up offset, wrong size, weird artifacts, etc.

When I finally plunked down the $150 for a DVI card for my plasma, it worked like magic. Made two changes to Catalyst (no scaling, 3:2 pulldown detect) - I got a wonderful, clear desktop and movies look fantastic (using PowerDVD decoder). I'm actually running at 1360x768 (6 black pixels = 0.4% of screen) but the results are so great that I'm not going to touch it.

I'm sure there are others who have a great result with VGA but to me DVI is a no-brainer if you have the option.

Thanks for the reply. My situation is that my LCD tv does not have a DVI port.

Instead, it does have an HDMI port, which i may try to use once i could get a DVI to HDMI adapter. However, even if that would work for a pixel perfect image, another problem is that the HDMI input of the LCD tv does not have a separate analog audio input!

So, even if the HDMI port would work, i wouldn't be able to get sound from the LCD tv speakers...

That's why i wanted to use the analog VGA input of the LCD tv to get a pixel perfect image.

Kupakai · 07-05-06, 12:07 PM

If you need to get 1:1 pixel mapping, your best bet would be VGA port (given that your TV does not have DVI). Since HDMI port is intended for AV usage, on most TVs, there are two issues that make it difficult to get 1:1 pixel mapping through DVI/HDMI cable. First is that on most TVs, HDMI input will only accept HD resolutions like 720x480, 1280x720, 1920x1080, etc. and will scale that to the screen's native resolution. The second issue is that through HDMI, the TV will overscan to hide the edges of the screen and you will have to compensate that on the video card by using a smaller resolution (something like 1216x684, depending on the TV) to fit the part of the screen that shows. There are some panels that can do custom resolutions through HDMI (I've read that Panasonic professional series, and some LG panels can), but most can't.

This doesn't mean you can't get a decent picture through HDMI, it's just that you won't be able to get the sharp 1:1 pixel mapping through HDMI. For most pictures and movies and large fonts, it doesn't look bad. The default fonts for the desktop on Windows look smeared since a lot of the lines are 1 pixel wide and gets scaled to 1 or 2 pixels wide depending on where on the screen it is, but for example, wht the large fonts on MCE frontend, it's hardly noticeable.

If you are using VGA port, try using either 1368x768 or 1360x768. As you noted, 1366 is not divisible by 8 and you won't normally be able to set it to that using VGA. On my TV, there is a mode for "Dot to Dot" and it will not scale the signal from the video card so that one row of pixels on each side will be "off the the screen" if sent 1368 wide signal. However, if there isn't a dot to dot mode, it may be trying to scale that to fit the screen. Then, see if 1360 will work and then you will have 3 rows of pixels on each side, and it may not scale with that resolution.

Check out this thread for further discussion on this. In particular, post #53 by Isochroma is helpful for setting the correct driver, and posts starting from #55 on are very informative. If you really must get exactly 1366 wide pixels, there is also a link in that thread for some video cards that can do 1366 pixels via VGA, but I wouldn't bother with that if you can get 1:1 pixel mapping with either 1368 (with 2 pixel overscanning) or 1360 (with 6 pixels underscanning).

hardworkerR · 07-06-06, 01:57 AM

Thank you for your detailed reply. If i could get 1360 or 1368 in 1:1 pixel perfect mode, i would be happy enough. I have read the thread you indicated before my initial post, and tried quite some time to get 1360x768 to work on my tv. The tv could display at that resolution, but i couldn't get the correct timing for a 1:1 pixel mapping. It's so frustrating.

Favelle · 07-06-06, 02:07 AM

Hardworker...I'm using a proview 32" (from FutureShop) as well. Its not so much on the television's side as it is on the video card's side. If using a nVidia card...simply add a custom resolution and away you go. As for ATI....well..its been 4 years since I've had an ATI card so I don't know.....

hardworkerR · 07-06-06, 02:12 AM

Quote:

Originally Posted by Favelle

Hardworker...I'm using a proview 32" (from FutureShop) as well. Its not so much on the television's side as it is on the video card's side. If using a nVidia card...simply add a custom resolution and away you go. As for ATI....well..its been 4 years since I've had an ATI card so I don't know.....

Oh! Great to hear that you are using a proview 32" as well. But from your previous reply, seems yours has a DVI port, right? Sadly, mine doesn't. What is the proview model you have? Could you get a 1:1 pixel mapping on yours?

Favelle · 07-06-06, 03:04 PM

I have the LCD Tv hooked up to 2 PC's. One is using the DVI and the other is using the VGA They both display the EXACT same image. The one using VGA is an OLD athlon machine using a nVidia Geforce 5500. It displays 1368 x 768 perfectly. I just use the nVidia settings wizard and created a new resolution.

This is all I did. Here's a screen shot of what I entered and this post as I was typing it, LOL!

hardworkerR · 07-09-06, 11:00 PM

Thanks again for your help. I will try it.

Favelle · 07-10-06, 12:52 AM

Let us know how it works bro!

hardworkerR · 07-14-06, 03:56 AM

Favelle: I've tried to do what you told, but I still can't get it right. As always, I can get a display from the TV, but not 1:1 pixel perfect.

In the nVidia driver, there should be an "Advanced Timing" button. Can you click it on your PC, and show me the values inside? That would greatly help. Thanks a lot.

Favelle · 07-16-06, 02:21 PM

Sure!!! Hang on a sec......................

Here ya go man....

Naylia · 07-17-06, 09:43 AM

just thought I should note that peoples detailed inputs probably won't help unless you have the same tv model...i've been struggling with getting pixel perfect on my LCD for a while and I can get close...but not "perfect" with a test pattern

however if you do have the dot to dot mode you'll get there eventually, keep trying for it

hardworkerR · 07-18-06, 08:19 PM

What a frustration! After trying with the timings specified above by Favelle, still can't get a 1:1 mapping. I think I am going to give it up. ...

Favelle · 07-19-06, 01:39 AM

Oh man.........that sucks dood....what video card are you using???

hardworkerR · 07-19-06, 02:29 AM

Well, I have tried with 2 video cards. One is an old Geforce 2 Pro 64MB, another is an ATI x700 pro 128MB. I don't think it is the video card problem, I think it is the TV's problem...

Favelle, what is the model of your proview TV ? Mine is RX326

Favelle · 07-20-06, 01:21 PM

OMG...you know what? I took the ProView BACK.....and I got the Insignia!! I totally remember why now!!! The ProView is NOT 1366 x 768. Its 1280 x 768!!!! Its a 15:9 screen! YES IT IS!

Check this out. its doesn't list the resolution.:

http://www.futureshop.ca/catalog/pro...gon=&langid=EN

"Aspect ratio:" ...............15:9

Sorry man, I traded it for a refurbed Insigna the very next day (this was over a year ago), and there are no logos on my screen, so I just remembered the ProView name.

Can you still take yours back?

Now...try 1280 x 768...it will work.

Kupakai · 07-20-06, 05:44 PM

Actually, according to Proview's website the TV is 1366x768, but the website could be wrong, or they could have updated the model.

In any case, hardworkerR, what are you actually getting on the screen when you try 1360, 1366 or 1368 x 768? Are you getting no signal, fuzzy text, screen shifted over, over/under scan, black bars on the sides, or something else? Did you try autosyncing from the TV's menu?

hardworkerR · 07-20-06, 11:17 PM

Hi guys, thanks for your replies.

I am still confident that the Proview RX326 has 1366x768 as the native resolution, eventhough there are mixed info from the net. I have tried previously working with 1280x768, the situation isn't much different from my tries with 1360 or 1368: there is image displayed, but couldn't get 1:1 pixel mapping.

Kupakai:
When I feed 1360 or 1368 to the TV, the TV shows "Auto Sync" for a while, then an image is displayed. Depending on the timings I give, some can give a shifted image, which usually gives an image shifted to the left (leaving a large black portion on the right side of the screen). With some tweaking on the values using powerstrip, i could manage to center the image on the screen, and make it without noticeable under/overscan.

I think the vertical resolution (768) is pretty good and seems to me that there is a correct pixel mapping in terms of the vertical resolution. The problem that I am trying to solve is to have a correct pixel mapping in the horizontal resolution. When I feed 1360 or 1368 to the TV, the text is blurry (in the horizontal direction), and when I tried to show a 50% black checkerbox pattern, i can see that the image becomes "flickering" and it is clear that there isn't a 1:1 pixel mapping.

drknightx · 07-21-06, 08:32 AM

i just purchased the proview monitor as well, and i am getting the EXACT same thing, like down to the description of auto sync and bar on the side.

i just cant get the screen to display 1360 (1368) correctly ...or at least not without having the distorted text.

I have emailed Proview regarding this, and if i DO find any solutions, i will let you all know.

hardworkerR · 07-22-06, 05:59 AM

Hi, drknightx. So we are in the same situation. One thing I have tried last time was that 1024x768 75Hz works well with the TV, when the scale is chosen as 4:3. That seems to give a 1:1 pixel mapping. However, don't know how to derive from those timings to get 1360 or 1368.

Here are the timings I used for 4:3 1024x768 75Hz:

Generic timing details for 1024x768:
HFP=24 HSW=96 HBP=168 kHz=60 VFP=1 VSW=3 VBP=28 Hz=75

LIE495FC · 07-23-06, 10:55 AM

hi guys, the 1:1 maping you guys talking about was it in VGA or HDMI mode?
so for the proview rx326 what resulotion will you get the 1:1 maping ?(VGA and HDMI).

because my rx326 set at 1024x768 in VGA mode works fine with videos, i use Klite(widow midea player clasic) to strech video to 16:9. then i got the DVI->HDMI cable the other day, the video looked like **** in HDMI mode, people say i'm not getting 1:1 maping, can you guys tell me what is 1:1 maping and how can i get it with RX326 ?

plusandrew · 01-21-07, 07:03 PM

*bump*

anyone find any solutions for ATI cards?

I have a 27" insignia LCD TV

I originally wasn't able to use anything but 1024x768, and 1360x768 wasn't using the extra pixels on the sides.

I swapped the VGA cable out from another monitor and I was able to use 1360x768.

but I'm not getting 1:1 and I have blurry pixels.

I can't seem to manually set a screen size on my x1600 pro, using the catalyst drivers.

my tv has a 1366x768 native, but I can't seem to get 1366x768 from my graphics card, and I have not dot to dot mapping available.

06-29-06, 01:29 AM	#1 \| Link	<a href='http://rev.avsforum.com/phpAdsNew/adclick.php?n=a4ac4393' target='_blank'><img src='http://rev.avsforum.com/phpAdsNew/adview.php?what=zone:30&n=a4ac4393' border='0' alt=''></a>
hardworkerR New Member Join Date: Jun 2006 Posts: 12	pixel perfect 1366x768 through VGA? Hi All, This is my first post in the forum. I have read some threads related to the pixel-perfect display from a PC to a 1366x768 LCD TV. However, seems to me that this resolution is only possible through the use of DVI and not analog D-SUB VGA port. Do you guys know what "common" display cards can do 1366x768 resolution through analog D-SUB VGA (any ATI or nVidia)? Thank you.

06-29-06, 09:38 PM	#5 \| Link
Favelle AVS Special Member Join Date: Dec 2004 Location: Victoria, BC, Canada Posts: 3,300	1366 x 768 is NOT a common PC rez. 1366 is NOT divisible by 8, therefore, it is NOT common. Most people use 1368 x 768 for VGA. That's what I use and I don't notice any difference. I have three computers using the same 32" LCD screen and one is DVI, and two are VGA. I don't notice ANY difference when switching between the DVI (which is 1366 x 768) and the VGA (1368 x 768). __________________ In terms of LFE, size does matter!

07-06-06, 02:07 AM	#13 \| Link
Favelle AVS Special Member Join Date: Dec 2004 Location: Victoria, BC, Canada Posts: 3,300	Hardworker...I'm using a proview 32" (from FutureShop) as well. Its not so much on the television's side as it is on the video card's side. If using a nVidia card...simply add a custom resolution and away you go. As for ATI....well..its been 4 years since I've had an ATI card so I don't know..... __________________ In terms of LFE, size does matter!

07-06-06, 03:04 PM	#15 \| Link
Favelle AVS Special Member Join Date: Dec 2004 Location: Victoria, BC, Canada Posts: 3,300	I have the LCD Tv hooked up to 2 PC's. One is using the DVI and the other is using the VGA They both display the EXACT same image. The one using VGA is an OLD athlon machine using a nVidia Geforce 5500. It displays 1368 x 768 perfectly. I just use the nVidia settings wizard and created a new resolution. This is all I did. Here's a screen shot of what I entered and this post as I was typing it, LOL! __________________ In terms of LFE, size does matter!

07-10-06, 12:52 AM	#17 \| Link
Favelle AVS Special Member Join Date: Dec 2004 Location: Victoria, BC, Canada Posts: 3,300	Let us know how it works bro! __________________ In terms of LFE, size does matter!

06-29-06, 07:13 AM	#2 \| Link
walford AVS Addicted Member Join Date: May 2003 Location: Orange County, CA Posts: 13,650	Since 1366x768 is a common PC resolution all video cards should be capable of it. VGA is perfectly capable of handling high resoltuion pixel detail after all CRT PC monitors using VGA have been in use for years that are capable of displaying very fine detail text. Just because stairstepped analog wave forms are used to describe the pixel content instead of ones and zeros does not imply that it is not accurate. I used a mannifying glass on my 19" 1240x1024 flat panel to examine the pixel patters of small font text and could find absolutly no differnce between using the VGA or DVI interface. I found that examining the text the top of a lower case e is very usefull for checking the pattern detail.

06-29-06, 12:44 PM	#3 \| Link
Ozy666 AVS Special Member Join Date: Jul 2003 Posts: 2,158	An alternating checkerboard of white and black pixels can be used to test for 1:1 pixel mapping. Accurate mapping will show a uniform grey, non-pixel perfect mapping will show bands lf light and dark. Ozy

06-29-06, 10:23 PM	#6 \| Link
walford AVS Addicted Member Join Date: May 2003 Location: Orange County, CA Posts: 13,650	I admit it does not seem to make sense but WXGA is defined as 1366x768 and not 1368x768. I checked a couple of sites using google and the all said the same. If it was not the case then there would be no reason for any manufacturer to make units with 1366x768 instead of 1368x768. I believe that the 1366 standard came form dividing 768 by 9 and multiplying by 16 indstead of trying to exactly allocate 8 pixels per character in a row.

06-29-06, 11:18 PM	#7 \| Link
hardworkerR New Member Thread Starter Join Date: Jun 2006 Posts: 12	Thank you guys for your replies. walford: yes, 1366 was obtained by 768/9*16, that is understandable. The problem is that most (if not all) VGA PC outputs require to use resolutions divisible by 8. So, i wanted to know if there exists any display card that could output such "non mod 8" resolutions. Favelle: thanks for your info. I am using a Proview RX326 LCDtv which i couldn't get a pixel perfect display by using 1368x768 through analog VGA. Do you mind telling what LCD tv you are using, and also the timing values you used for 1368x768 analog vga?

06-29-06, 11:59 PM	#8 \| Link
Ozy666 AVS Special Member Join Date: Jul 2003 Posts: 2,158	Some of the Matrox cards can apparantly do it: http://www.matrox.com/mga/pid/produc...comparison.pdf Ozy

07-04-06, 02:15 AM	#9 \| Link
mismjy1 Member Join Date: Mar 2001 Location: San Francisco, CA, USA Posts: 56	I am definitely not as engaged in this field as others here, but I have to put in a vote for DVI. I have a Panny plasma, and fed it through VGA for six months from an ATI 9600, then later an x1600 card. When I used the VGA port, Windows did not recognize the monitor, and I could never get anything close to 1:1 mapping whether through Catalyst, Powerstrip, etc. The image would show up offset, wrong size, weird artifacts, etc. When I finally plunked down the $150 for a DVI card for my plasma, it worked like magic. Made two changes to Catalyst (no scaling, 3:2 pulldown detect) - I got a wonderful, clear desktop and movies look fantastic (using PowerDVD decoder). I'm actually running at 1360x768 (6 black pixels = 0.4% of screen) but the results are so great that I'm not going to touch it. I'm sure there are others who have a great result with VGA but to me DVI is a no-brainer if you have the option.

07-05-06, 12:07 PM	#11 \| Link
Kupakai Advanced Member Join Date: Dec 2005 Location: New York City Posts: 665	If you need to get 1:1 pixel mapping, your best bet would be VGA port (given that your TV does not have DVI). Since HDMI port is intended for AV usage, on most TVs, there are two issues that make it difficult to get 1:1 pixel mapping through DVI/HDMI cable. First is that on most TVs, HDMI input will only accept HD resolutions like 720x480, 1280x720, 1920x1080, etc. and will scale that to the screen's native resolution. The second issue is that through HDMI, the TV will overscan to hide the edges of the screen and you will have to compensate that on the video card by using a smaller resolution (something like 1216x684, depending on the TV) to fit the part of the screen that shows. There are some panels that can do custom resolutions through HDMI (I've read that Panasonic professional series, and some LG panels can), but most can't. This doesn't mean you can't get a decent picture through HDMI, it's just that you won't be able to get the sharp 1:1 pixel mapping through HDMI. For most pictures and movies and large fonts, it doesn't look bad. The default fonts for the desktop on Windows look smeared since a lot of the lines are 1 pixel wide and gets scaled to 1 or 2 pixels wide depending on where on the screen it is, but for example, wht the large fonts on MCE frontend, it's hardly noticeable. If you are using VGA port, try using either 1368x768 or 1360x768. As you noted, 1366 is not divisible by 8 and you won't normally be able to set it to that using VGA. On my TV, there is a mode for "Dot to Dot" and it will not scale the signal from the video card so that one row of pixels on each side will be "off the the screen" if sent 1368 wide signal. However, if there isn't a dot to dot mode, it may be trying to scale that to fit the screen. Then, see if 1360 will work and then you will have 3 rows of pixels on each side, and it may not scale with that resolution. Check out this thread for further discussion on this. In particular, post #53 by Isochroma is helpful for setting the correct driver, and posts starting from #55 on are very informative. If you really must get exactly 1366 wide pixels, there is also a link in that thread for some video cards that can do 1366 pixels via VGA, but I wouldn't bother with that if you can get 1:1 pixel mapping with either 1368 (with 2 pixel overscanning) or 1360 (with 6 pixels underscanning).

07-06-06, 01:57 AM	#12 \| Link
hardworkerR New Member Thread Starter Join Date: Jun 2006 Posts: 12	Thank you for your detailed reply. If i could get 1360 or 1368 in 1:1 pixel perfect mode, i would be happy enough. I have read the thread you indicated before my initial post, and tried quite some time to get 1360x768 to work on my tv. The tv could display at that resolution, but i couldn't get the correct timing for a 1:1 pixel mapping. It's so frustrating.

07-09-06, 11:00 PM	#16 \| Link
hardworkerR New Member Thread Starter Join Date: Jun 2006 Posts: 12	Thanks again for your help. I will try it.

07-14-06, 03:56 AM	#18 \| Link
hardworkerR New Member Thread Starter Join Date: Jun 2006 Posts: 12	Favelle: I've tried to do what you told, but I still can't get it right. As always, I can get a display from the TV, but not 1:1 pixel perfect. In the nVidia driver, there should be an "Advanced Timing" button. Can you click it on your PC, and show me the values inside? That would greatly help. Thanks a lot. Last edited by hardworkerR; 07-14-06 at 04:07 AM..

07-16-06, 02:21 PM	#19 \| Link
Favelle AVS Special Member Join Date: Dec 2004 Location: Victoria, BC, Canada Posts: 3,300	Sure!!! Hang on a sec...................... Here ya go man.... __________________ In terms of LFE, size does matter!

07-17-06, 09:43 AM	#20 \| Link	<a href='http://rev.avsforum.com/phpAdsNew/adclick.php?n=a591f81a' target='_blank'><img src='http://rev.avsforum.com/phpAdsNew/adview.php?what=zone:36&n=a591f81a' border='0' alt=''></a>
Naylia HTPCer Join Date: Feb 2005 Location: Mountain View, CA Posts: 1,736	just thought I should note that peoples detailed inputs probably won't help unless you have the same tv model...i've been struggling with getting pixel perfect on my LCD for a while and I can get close...but not "perfect" with a test pattern however if you do have the dot to dot mode you'll get there eventually, keep trying for it

07-18-06, 08:19 PM	#21 \| Link
hardworkerR New Member Thread Starter Join Date: Jun 2006 Posts: 12	What a frustration! After trying with the timings specified above by Favelle, still can't get a 1:1 mapping. I think I am going to give it up. ...

07-19-06, 01:39 AM	#22 \| Link
Favelle AVS Special Member Join Date: Dec 2004 Location: Victoria, BC, Canada Posts: 3,300	Oh man.........that sucks dood....what video card are you using??? __________________ In terms of LFE, size does matter!

07-19-06, 02:29 AM	#23 \| Link
hardworkerR New Member Thread Starter Join Date: Jun 2006 Posts: 12	Well, I have tried with 2 video cards. One is an old Geforce 2 Pro 64MB, another is an ATI x700 pro 128MB. I don't think it is the video card problem, I think it is the TV's problem... Favelle, what is the model of your proview TV ? Mine is RX326

07-20-06, 01:21 PM	#24 \| Link
Favelle AVS Special Member Join Date: Dec 2004 Location: Victoria, BC, Canada Posts: 3,300	OMG...you know what? I took the ProView BACK.....and I got the Insignia!! I totally remember why now!!! The ProView is NOT 1366 x 768. Its 1280 x 768!!!! Its a 15:9 screen! YES IT IS! Check this out. its doesn't list the resolution.: http://www.futureshop.ca/catalog/pro...gon=&langid=EN "Aspect ratio:" ...............15:9 Sorry man, I traded it for a refurbed Insigna the very next day (this was over a year ago), and there are no logos on my screen, so I just remembered the ProView name. Can you still take yours back? Now...try 1280 x 768...it will work. __________________ In terms of LFE, size does matter!

07-20-06, 05:44 PM	#25 \| Link
Kupakai Advanced Member Join Date: Dec 2005 Location: New York City Posts: 665	Actually, according to Proview's website the TV is 1366x768, but the website could be wrong, or they could have updated the model. In any case, hardworkerR, what are you actually getting on the screen when you try 1360, 1366 or 1368 x 768? Are you getting no signal, fuzzy text, screen shifted over, over/under scan, black bars on the sides, or something else? Did you try autosyncing from the TV's menu?

07-20-06, 11:17 PM	#26 \| Link
hardworkerR New Member Thread Starter Join Date: Jun 2006 Posts: 12	Hi guys, thanks for your replies. I am still confident that the Proview RX326 has 1366x768 as the native resolution, eventhough there are mixed info from the net. I have tried previously working with 1280x768, the situation isn't much different from my tries with 1360 or 1368: there is image displayed, but couldn't get 1:1 pixel mapping. Kupakai: When I feed 1360 or 1368 to the TV, the TV shows "Auto Sync" for a while, then an image is displayed. Depending on the timings I give, some can give a shifted image, which usually gives an image shifted to the left (leaving a large black portion on the right side of the screen). With some tweaking on the values using powerstrip, i could manage to center the image on the screen, and make it without noticeable under/overscan. I think the vertical resolution (768) is pretty good and seems to me that there is a correct pixel mapping in terms of the vertical resolution. The problem that I am trying to solve is to have a correct pixel mapping in the horizontal resolution. When I feed 1360 or 1368 to the TV, the text is blurry (in the horizontal direction), and when I tried to show a 50% black checkerbox pattern, i can see that the image becomes "flickering" and it is clear that there isn't a 1:1 pixel mapping.

07-21-06, 08:32 AM	#27 \| Link
drknightx New Member Join Date: Jul 2006 Posts: 4	i just purchased the proview monitor as well, and i am getting the EXACT same thing, like down to the description of auto sync and bar on the side. i just cant get the screen to display 1360 (1368) correctly ...or at least not without having the distorted text. I have emailed Proview regarding this, and if i DO find any solutions, i will let you all know.

07-22-06, 05:59 AM	#28 \| Link
hardworkerR New Member Thread Starter Join Date: Jun 2006 Posts: 12	Hi, drknightx. So we are in the same situation. One thing I have tried last time was that 1024x768 75Hz works well with the TV, when the scale is chosen as 4:3. That seems to give a 1:1 pixel mapping. However, don't know how to derive from those timings to get 1360 or 1368. Here are the timings I used for 4:3 1024x768 75Hz: Generic timing details for 1024x768: HFP=24 HSW=96 HBP=168 kHz=60 VFP=1 VSW=3 VBP=28 Hz=75

07-23-06, 10:55 AM	#29 \| Link
LIE495FC New Member Join Date: Jul 2006 Posts: 1	hi guys, the 1:1 maping you guys talking about was it in VGA or HDMI mode? so for the proview rx326 what resulotion will you get the 1:1 maping ?(VGA and HDMI). because my rx326 set at 1024x768 in VGA mode works fine with videos, i use Klite(widow midea player clasic) to strech video to 16:9. then i got the DVI->HDMI cable the other day, the video looked like **** in HDMI mode, people say i'm not getting 1:1 maping, can you guys tell me what is 1:1 maping and how can i get it with RX326 ?

01-21-07, 07:03 PM	#30 \| Link	<a href='http://rev.avsforum.com/phpAdsNew/adclick.php?n=a591f81a' target='_blank'><img src='http://rev.avsforum.com/phpAdsNew/adview.php?what=zone:36&n=a591f81a' border='0' alt=''></a>
plusandrew New Member Join Date: Jan 2007 Posts: 1	bump anyone find any solutions for ATI cards? I have a 27" insignia LCD TV I originally wasn't able to use anything but 1024x768, and 1360x768 wasn't using the extra pixels on the sides. I swapped the VGA cable out from another monitor and I was able to use 1360x768. but I'm not getting 1:1 and I have blurry pixels. I can't seem to manually set a screen size on my x1600 pro, using the catalyst drivers. my tv has a 1366x768 native, but I can't seem to get 1366x768 from my graphics card, and I have not dot to dot mapping available.