Thread: 800x480 on intel 945GM/GMA950 - is it possible?

If you have a 900-series Intel Chipset or newer, this should be by far the easiest solution.

This should work for G965, Q965, Q963, 946GZ, 945G, and 945GZ Express desktop chipsets and the 945GT, 945GM, 945GMS, and 940GML Express mobile chipsets.


Download the latest Intel Graphics Media Accelerator driver package in ZIP format for Windows XP.

Here's the current (as of now) driver versions 14.27 for Windows 2000 or XP:

http://downloadfinder.intel.com/scri...&DwnldID=12929 (17M)


Extract the package.

Go into the Graphics folder.

Edit the igxp32.inf file - it'll be the only one there named so.


Search for these lines:

Code:

[NonEDIDMode_AddSwSettings]
HKR,, TotalDTDCount, %REG_DWORD%, 0  	; 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_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

Replace with these lines:

Code:

[NonEDIDMode_AddSwSettings]
HKR,, TotalDTDCount, %REG_DWORD%, 1  	; 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%, 01,0E,0F,20,E8,30,E0,8E,10,28,50,D3,0C,19,10,00,00,00,37,01		;800x480@60...Non-Interlaced, Xenarc Timings
HKR,, DTD_2,%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_3,%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_4,%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_5,%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_6,%REG_BINARY%, 00, 00, 00 ,00, 00, 00,00, 00, 00,00, 00, 00,00, 00, 00,00, 00, 00,00, 00	;Sixth DTD

If you want to use 1920x1080 (1080i/1080p) and 1280x720 (720i/720p), change the TotalDTDCount number from 1 to 5.

Close the file, and install the driver package using the Setup.exe at the root.

Reboot.


Right click the desktop, choose Display Properties.

Click the Settings tab, and click the external display if you have more than 1.

Click the Advanced button.

Click the Adapter tab, and click the Display All Modes button.


You should see 800 x 480 there in the list, with whatever color depth and refresh rates.

Select it, click OK, and OK out of the Display Properties box.


That should do it.


References:
http://isnwiki.jot.com/WikiHome/Articles/111111431

Also should work for Vista, different .INF files though.

Still a no-go. I verified the .inf editing you specified, verified the DTD setting read "1", for the first rez, attempted to run the setup, reported "does not support this hardware", and conked out. I tried a manual driver update specifying the igxp32, that took, but resolution was not available under adaptor modes. I tried the setup again, that took this time, but still no rez's available other than the normal run of the mill and their rotated counterparts.

BTW: When I did the manual update, Windows asked me for "plug and play monitor" drivers as well. I gave it the file specified by windows, as any other selection "does not contain information about this hardware". Could this be a clue as to why it isn't working?

Originally Posted by hithere

Still a no-go. I verified the .inf editing you specified, verified the DTD setting read "1", for the first rez, attempted to run the setup, reported "does not support this hardware", and conked out. I tried a manual driver update specifying the igxp32, that took, but resolution was not available under adaptor modes. I tried the setup again, that took this time, but still no rez's available other than the normal run of the mill and their rotated counterparts.

BTW: When I did the manual update, Windows asked me for "plug and play monitor" drivers as well. I gave it the file specified by windows, as any other selection "does not contain information about this hardware". Could this be a clue as to why it isn't working?

Alright..

Try it again, one more time, but use the Dell driver package:

http://support.dell.com/support/down...&fileid=197328

R148504.exe, a self-extracting archive. 7.5M


Its .INF file is in the same place, has the same strings.

This is supposed to work...

Still a no-go with the Dell package. Frustrating.

Alright..

Did the Dell driver package install at all?

It should have..


One last thing to check:

On the Monitor tab under Advanced, there's a checkbox called "Hide modes this monitor cannot display".


See if it's checked - uncheck it, and see if 800x480 shows up in the resolution list.

I had no trouble installing the Dell package, my driver indicates the correct date when finished, but no option for the rez. The check box is greyed out, but as before, I have any number of resolutions I can change my monitor to listed under modes, just no 800 X 480.

Originally Posted by hithere

I had no trouble installing the Dell package, my driver indicates the correct date when finished, but no option for the rez. The check box is greyed out, but as before, I have any number of resolutions I can change my monitor to listed under modes, just no 800 X 480.

Greyed out, as in you can't check or uncheck it?


Is it greyed out with a check in it?


How odd... especially since WiCKeD 5.9L has a 945GM board, and the IEGD drivers worked for him.


Perhaps I got something wrong with the EDID byte string.


I'm expecting my LVDS cable in the next day or so, let me see if I can play around with the drivers..


Laptops seem to be especially difficult, as they have the local LCD panel in addition to the external analog VGA.

The IEGD package worked for WiCKeD 5.9L because he's using only the VGA port - only one display device.

Also, the check box is dependant on which monitor you select.

Try this:

1. Right click on the desktop and select 'Properties'

2. Select the 'Settings' Tab.

3. Click on the monitor with '2' in it.

4. Select the 'Extend Windows desktop onto this monitor' (or similar words).

5. Click 'Apply'.

(You may have already got this far)

6. Click on the 'Advanced' button.

7. Select the Monitor Tab

8. Unselect the 'Hide Modes that this monitor cannot display'

9. Click 'OK'


If it allows you to change the resolution, you can then right click monitor 2 and make it your primary display.

Can't do steps 8-9. Option is greyed out. I've successfully installed both the Intel version of the drivers as well as the dell version with the modifications to the .ini you specified above. I can see the structure of the .ini, the way variables are assigned, the way it chooses which list of resolutions to use or not based on the presence or absense of EDID data, but I don't see the resolution under "list all modes"...what I do see is a list of modes that I don't know if all of them were there before, such as 1920X1080 and 1280 X 720...

Is there a touchscreen driver or some such that could be blocking or reporting EDID by proxy to the operating system or something? I just don't see why the machine is not giving the proper list of (1) resolution and one only when outputting over vga in the absense of EDID.

Edit: I forgot to mention that I'm sorry I can't at least communicate with you with the same frequency you seem to be able to post about the issue, work responsibities and such. I greatly appreciate your efforts thus far. It's just one of those things, I guess, which is going to bug me until it's solved or until Dell announces that they've limited it in hardware for my particular machine so it just can't happen.