1366 x 768 resolution

[crazyburns]

I have 3 Windows Vista computers that I am connecting up to Sony Bravia KDL40S2000 LCD tvs using a VGA connection. The computers are Dells with and intel Q965/Q963 Express Chipset. I am trying to run the screens at there default resolution of 1366 x 768, but this is not an option. The only resolution close to this that works is 1280 x 768, however this leaves black bars on each side of the image. I have downloaded the latest driver but this didn't make a difference. I have tried finding a display driver for the monitor (it shows up as generic display) but have been unable to find an available one. I also attempted to use PowerStrip to set a custom resolution, but this did nothing (I've read somewhere that PowerStrip doesn't work with Intel).

I found an article where they discussed editing the [NonEDIDMode_AddSwSettings] in the driver inf file, however I did not understand what all of these diffenet settings mean. Is this the best way to make this work?

Any help would be greatly appreciated.

[Aaron_B_Intel]

You're probably running into the classic HDMI monitor limitation. Many HDMI inputs are limited to taking only "CE" (aka "consumer electronics" resolutions), even though their native resolution is different. CE resolutions are 720x480p, 1920x1080i/p, 1280x720p, etc. What you'd get out of a set top box, in other words. The TV then scales those inputs to native (1360x768).

I believe you have the Bravia V-series, correct? According to this, it's not capable of 1:1 pixel mapping over HDMI:

http://pixelmapping.wikispaces.com/Sony+TVs

Sorry to be the bearer of bad tidings. You can send 1920x1080 and then I can help you in modifying the DTD so it doesn't overscan so much, but short of that your best bet is VGA if you want 1:1 pixel mapping.

[Aaron_B_Intel]

You're in the same situation, Richard:

http://pixelmapping.wikispaces.com/Samsung+TVs

The LE-xxR7yy series can do 1:1 pixel mapping over VGA, not HDMI. I can help you develop a 1280x720 or 1920x1080 resolution which eliminates the cropping, but other than that I can't help unless you want to use VGA.

[richard_crossman]

"can help you develop a 1280x720 or 1920x1080 resolution which eliminates the cropping"
Yes please! It's the cropping (overscan) that is the annoying thing at the moment. I don't have separate speakers so the HDMI route is preferable to VGA as it doesn't carry audio.
What do you need to know from me?

Also which open GL settings should I use?

Thanks again!

[Aaron_B_Intel]

Get the latest version of Powerstrip. It's abilities with Intel graphics are not comprehensive, but it will let you do a "resolution within a resolution", which is what you want here.

Basically, when your TV gets 1280x720, it expands ("scales") that imageto fit the actual 1366x768 physical pixels in your screen. When it does this, it scales it a little extra large so that any weird artifacts along the edge of a TV broadcast will be cut off (this is a holdover from analog TV days, and really has no place in a modern digital screen, but I digress).

Select 1280x720 resolution and start up Powerstrip. In Powerstrip, go to Display Profiles | Configure, choose Advanced Timing Options, then Custom Resolutions. In the lower right hand corner of the Custom Resolutions screen is a Design icon for "Design a resolution-in-a-resolution". Click this, extend the box to the limits of your screen, then click OK.

Now click "Copy to Clipboard" and paste the result here. Ican help you convert the Modeline that you paste here to a DTD value you can use to get an uncropped image.

[richard_crossman]

Ok will do that tonight when I get home. I understand from previous posts that I need to download another copy of my latest graphics driver and search for the INF file and modify using the details you hopefully supply?

Thanks for your help!

[Aaron_B_Intel]

That's the simplest. You can do it by manually modifying the registry, too, but that's kind of tedious since you have to do it multiple times.

[richard_crossman]

Ok here you go:
1222,468,40,250,710,15,5,20,148800,512

I couldn't get the top of the window enough out of the screen (a tiny line of the desktop is visible but otherwise this should do it.
I hope you can help.
Thanks in advance!

Rich

[Aaron_B_Intel]

You should be good to go with

20 3A C6 F6 42 C6 28 20 D4 28 F5 40 00 00 00 00 00 1E

If you need to shift the screen up or down, or add another line at the top, let me know and I'll walk you through it.

[fsjcc1]

Hi Everyone,

This is my first post but I have been following this thread for about a week. I'm having similar problems as some of you. I recently bought a Shuttle SG33G5 which features the Intel G33 chipset and HDMI port. I'm connecting to my Rear Projection LCD HDTV which is a Panasonic PT-52LCX66 via HDMI. The problem I have is "optical overscan" as described here. The TV's native resolution is 1280x720@60Hz. The driver and TV are in sync and I see the picture displayed, but the problem is the visible area is smaller than the native resolution.

I have had success in the past on this TV with nVidia drivers which have a feature in ForceWare that will automatically adjust the visible area to fit the screen. The reason I bought this system is because on Intel's website for the G33, they advertise "Intel TV Wizard" which claims to correct for overscan/underscan. I expected this to be similar to the nVidia solution only to find it doesn't do anything besides let me choose from 480p, 720p, 1080i. There is no option to adjust overscan and it's basically worthless.

I have been emailing Intel Tech Support and this was their latest response:

Hello,

Thank you for contacting Intel Technical Support.

At this point, we can only recommend that you contact the motherboard manufacturer for additional information and technical support. This issue has not been replicated nor have other customers reported it.

Please do not hesitate to contact us again if you need further assistance.

Sincerely,
Intel Technical Support

Needless to say I am very disappointed. I would strongly suggest to everyone tocontact Intel Tech Support and make them aware this is a common issue. We need to hold them responsible for fixing features they advertise for their products that we paid good money for,in particularthis "Intel TV Wizard".

archibael, I have been following your posts on several forums and have attempted your solution of manually adjusting the DTD so that the active pixels are reduced to 1192x672 (by also increasing the blank pixels so that the total count is constant). So far, I have not had success with this over HDMI, but it does work for VGA. On HDMI the screen is blank, asone other poster observed.

If anyone has any other ideas, please share them. In parallel, let's all make sure Intel hears about this.

Thanks.

[Aaron_B_Intel]

fsjcc1,

I agree that people need to be contacting customer support on these issues; if the software is not working as advertised (especially TV Wizard, which I'm not familiar with since it doesn't seem to work on my operating system), Intel should get an earful. The fact that we have a workaround is no excuse for it not working out of the box.

What are you using for a DTD, as compared to what you might get through MonInfo over HDMI, if I may ask? I don't want to cast aspersions on your ability to calculate it yourself, but it's very easy to make a typo or reverse bytes-- I do it all the time.

Further, there is another parameter in the .INF file/registrywhich I don't ordinarily mess with but which may assist you, and that's

HKR,, Display1_AddUnderscanPercentageHDMI,%REG_DWORD%, 0

I think you can just tweak that up (probably not past 15, but experiment) to get the picture to scan under.

Are you sure you can't get what you want out of the Zoom Adjust and/or PC Adjust screens on the Panasonic? Or are the results there unencouraging?

[richard_crossman]

Could you walk me through the procedure anyway?
Have read the rest of the posts but still a little confused.
Thanks for your help!

[Aaron_B_Intel]

The whole thing, or just the procedure for moving the screen up or down, or adding a line?

[richard_crossman]

The whole thing please? Thanks so much.

[Aaron_B_Intel]

Okay.

Download the latest driver for your OS (Vista or XP) in .zip format.

XP: http://downloadcenter.intel.com/filter_results.aspx?strTypes=all&ProductID=2301&OSFullName=Windows*+XP+Media+Center+Edition〈=eng&strOSs=88&submit=Go%21

Vista32: http://downloadcenter.intel.com/filter_results.aspx?strTypes=all&ProductID=2301&OSFullName=Windows+Vista*+Ultimate%2C+32-bit+version〈=eng&strOSs=156&submit=Go%21

Vista64: http://downloadcenter.intel.com/filter_results.aspx?strTypes=all&ProductID=2301&OSFullName=Windows+Vista*+Home+Premium%2C+64-bit+version〈=eng&strOSs=159&submit=Go%21

Extract the .zip file to some directory. In that directory, browse to Graphics, then look for the .INF file for your OS (igxp32, igdlh, igdlh64 respectively). Edit that .INF file, search for "DTD". There should be an entry which is something like "TotalDTD", and it is set to "0". Change it to 1.

Underneath are five DTDs (detailed timing descriptors). Edit the first one to match:

20, 3A, C6, F6, 42, C6, 28, 20, D4, 28, F5, 40, 00, 00, 00, 00, 00, 1E, 37, 01

Save the file. Go up once more to the directory you extracted to, and double click setup.exe. Reboot as requested. It should install this new DTD, making 1222x710 available as a resolution to select.

There's been some question lately on whether this will work with HDMI. Let me know if you get any new resolutions availalable; there are some other registry tweaks to try for underscan reduction if this doesn't work.

[richard_crossman]

Thanks for all the info. Unfortunately I am in Milan at the moment so I am unable to test the settings. I should have an answer by friday. Once again thanks for your help. Like the other person said I think we should let Intel know of this problem so they can create a fix themselves, because without your sterling help we would be stuck with the horrible overscan from this gfx card.

Caio

[richard_crossman]

Hi Archi, I tried the settings you suggested however the screen just seems to be chopped in half, as if it has dropped down and repeated at the top. I noticed in the Intel
driver properties it has the new setting but is also set to 100Hz refresh rate. My LCD is 50-60Hz, could this be causing the issue? What do I need to change to correct this?
Thanks!
Rich

[Aaron_B_Intel]

Sorry, I hadn't noticed Powerstrip was lying about the pixel clock (saying it was 148.80MHz). Should be 74.25MHz, or

01,1D, C6, F6, 42, C6, 28, 20, D4, 28, F5, 40, 00, 00, 00, 00, 00, 1E, 37, 01

That's 50Hz refresh rate. If you are in Europe, you're done. In the States, you really want a 60Hz refresh, so either redo the Powerstrip technique having chosen the 60Hz refresh or go with my crappy guess at what it might look like:

01,1D, C6, AC, 41, C6, 28, 20, 8A, 28, F5, 00, 00, 00, 00, 00, 00, 1E, 37, 01

That one's probably shifted all to hell, but it's worth a try.

[richard_crossman]

Ok that is a little better although the picture needs to be shifted right as it does not reach all the way to the right edge of the screen. About the width of a cigarette.

[Aaron_B_Intel]

Depending on which one you used

01,1D, C6, F6, 42, C6, 28, 20, D4, 28, F5, 40, 00, 00, 00, 00, 00, 1E, 37, 01; 50Hz

01,1D, C6, AC, 41, C6, 28, 20, 8A, 28, F5, 00, 00, 00, 00, 00, 00, 1E, 37, 01 ;60Hz

Change the blue value to something smaller. Think of the blue value as the distance from the right hand side of the screen. The smaller you make it, the more you will shift to the right. I'm guesstimating here that "width of a cigarette" is about 40 pixels. So subtract 40 from the blue value to get:

D4 (212 in decimal) - (40 decimal) = AC (172 decimal)

or

8A (138 in decimal) - (40 decimal) = 62 (98 decimal)

It's a matter of trial and error at this point. Shift the values in blue up or down until you get an acceptable screen position.

[nox1]

Hi archibael!

Can you help me? I used an Mobile Intel 915GM/GMS,910GML Express Chipset on an Asus W5A with the latest Intel 915 Graphic driver v14.25.50 (v6.14.10.4764). I need a resolution from 1366x768@60Hz (Horizontal 48,39kHz/Vertical 60,04Hz) on a Panasonic TX-32LXD700F (Horizontal 31-69kHz, Vertical 59-86Hz). That is the nativ Display resolution. But I does not have it,

I have Read any Posts and used also the DTD Calculator, but it does not work. What is wrong?
My Changes make in igxp32.inf:

[NonEDIDMode_AddSwSettings]
HKR,, TotalDTDCount, %REG_DWORD%, 4 ; This shows number of DTDs to be used. ; 0-->Disable the feature.
;Following keys have 20 bytes (18 byte DTD + 2 Byte flags).
HKR,, DTD_1,%REG_BINARY%, 01,1D,80,18,71,1C,16,20,58,2C,1A,00,00,00,00,00,00,86,37,01 ;1920x1080@60...Interlaced
HKR,, DTD_2, %REG_BINARY%, 01,1D,80,D0,72,1C,16,20,10,2C,1A,80,00,00,00,00,00,86,37,01 ;1920x1080@50...Interlaced
;HKR,, DTD_3,%REG_BINARY%, 01,1D,00,BC,52,D0,1E,20,B8,28,25,40,00,00,00,00,00,04,37,01 ;1280x720@50....Non-interlaced
HKR,, DTD_3,%REG_BINARY%, 70,17,50,B0,51,00,1B,30,48,70,36,00,00,00,00,00,,00,18,37,01 ;1366x768@60....Non-interlaced
HKR,, DTD_4, %REG_BINARY%, 01,1D,00,72,51,D0,1E,20,6E,28,25,00,00,00,00,00,00,06,37,01 ;1280x720@60....Non-interlaced
HKR,, DTD_5,%REG_BINARY%, 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00, 00,00,00,00 ;Fifth DTD

Thanks!

[Aaron_B_Intel]

I tried to find a modeline and failed. Are you using VGA or DVI? It should work over VGA, but over DVI you can't get 1360x768 (see http://pixelmapping.wikispaces.com/Panasonic+TVsabout that).