Intel G35 chipset doesnt have 1280x960 and 1280x720

Hi andyking
You need a program called DTDcalc for custom Intel resolutions (I have ASUS P5E V HDMI and can get almost any resolution and frame rate using this tool). For more info check out this thread:

http://www.avsforum.com/avs-vb/showthread.php?t=947830

The guys and gals there are really good and will help you with what you need. Hope this helps you out.
Cheers,
Jiff.

Ask either Wo0sy or archibal...they are the gurus. It is possible to use standard settings and then alt4er them to suite.
Hope this helps,
Cheers,
Jiff.

Not sure where you got the 'ideal resolutions' for your TV, or how you determined that 1280x720 is not compatible with your TV, but here are my thoughts on this. Over HDMI you should not be aiming for 'native' panel resolution, as this is not what most TV's expect. a 720p signal will not necessarily be 'scaled', but there is always an internal 'panel-mapping' process which fits the input resolution to the actual pixels on the panel. For a 1366x768 panel, the 'native' resolution is actually 720p over HDMI, this is then panel-mapped to 1366x768. Other resolutions, e.g. 576i are scaled up to 720p internally, and then also panel-mapped to 1366x768. For the panel in your TV, 720p is almost certainly the 'right' resolution. However, it probably overscans by default, which is fine for video, but you will lose some of your desktop. To overcome this, first attempt to reduce/eliminate overscan on the TV either through normal or service menu's. If this has been unsuccessful, then you need to start looking at custom resolutions to reduce the overscan. This is where DTDCalc comes in useful, as it lets you create custom resolutions. Best bet is to start at 720p and adjust it to fit, then save this and apply it to the registry

720p signal will be scaled to fit the pannel, their is not sufficient data to cover the panel so some type of internal scaling in the TV will have to be done ('panel-mapping' is scaling!!!). Most TV's will except differant resolutions to 480/575720/1080p over HDMI and it is more of a case of the quality of the computers scaling vs that of the TV's internal scaler. Use whichever one is best.
Jiff.

This is not the case. Feed a 1366x768 signal over HDMI to most panels, they will firstly scale to 720p, then panel-map back to 1366x768. The scaling and panel-mapping processes internally are separate, scaling occuring first at a more 'software' level, then panel-mapping at a hardware level directly to the PDP. I know 'panel-mapping' is scaling, but I am using this as a separate term to try and highlight the different internal processes that occur. I'm thinking I might have to start delving for some backup to prove this fairly soon, but can't remember where I read it! ;-)

Fair enough.....supose that a two process system is possible. The more you know :-)
Jiff.

DVI however might be a different story...I think its the limitations of the HDMI interface that requires the initial conversion to a 'recognised' resolution e.g. 720p/1080p

While I won't argue with eeit232's logic, andy's Diagnostic Report shows "Generic PnP Monitor" via Analog so I'm guessing he's using a VGA connection. If not, there's something very wrong with the report.

andy, can you confirm your connection type? I'm currently looking through your TV's manual but in the meantime you might want to try the following DTD

66 21 50 B0 51 00 1B 30 50 70 36 00 00 00 00 00 00 1E

A few people have had success with this so far.

Wo0zy

According to the manual I found on LG's site, this TV's native rez is 1024x768. Manuals can be lies, of course.

I used to have the LG42PX4D until yesterday (new Panasonic on the way!).

I ran it routinely at 1280x720 and it also worked just fine at 1024x768. I think your model is slightly newer than mine but otherwise the same. I wonder why you can't select 1280x720.

I think the 1024x768 native res is over VGA- hdmi supported either (well, for that matter, so did vga).

Glad it worked andy,

I thought your diagnostic report was probably from the VGA port

The problem you're having with 1280x720 (720p) is typical overscan. You can use DTDCalc to adjust this and see if the resulting image looks better than your current one or not.

I got the 1360 DTD from someone who was experimenting with DTDCalc a while back and it seems to have done the trick a few times now (at least when the display support 1360x768 over HDMI ).

Based on that timing, 1366 will be

66 21 56 AA 51 00 1B 30 4D 70 36 00 00 00 00 00 00 1E

Will have to see if I can dig up a 1280x768 for you. I have a 32" LG which supports it so I'll try and get the timings from that. If not, as Archibael suggested, see if you can find a modeline through the magic of Google and we can convert that.

Good luck.

Wo0zy

Isn't there a utility within the intel drivers that lets you make minor adjustments to the size of the screen? I think I used that to get it to fit with my LG at 1280x720. I wish I could help but I have no tv anymore and my memory ain't so great.

TVWizard does this on some chipsets, but I think it uses panel fitting aka scaling. 1:1 pixel mapping with DTD Calc will probably have superior results.

Hi andy,

Converting modeline to DTD is actually very easy if you use DTDCalc. All the values down the LHS correspond exactly to the Modeline values so for instance


Pixel Clock=69
H Active Pixels=1280
H Start of Sync Pulse=1280

and so on.

The odd thing about the modeline you've posted is that the Horizontal Sync Pulse appears to begin directly after the active pixels finish which is unusual (no Front Porch as they say in Powerstrip language).

By all means give it a try but I'm not sure it will work.

Wo0zy

PS. Have you tried tuning the existing 1360x768 timing using either the ruler tool or the fine tuner? Might be worth trying.