G35: Monitor through DVI not detected

[feelfree]

I own a HP/Compaq L2025 20" TFT (1600x1200), which do NOT respond any DDC/EDID data at its DVI-port.
Due to this, the monitor is not detected with the Intel GMA driver (I only get a short flickering at the driver page while plugging/unplugging the monitor; that's why I believe the monitor IS detected indeed, but since it responds no valid EDID, the driver does not activate the DVI).

On my Notebook with 945GM (also with an DVI plug) I found a workaround to this problem: I use the IEGD 8.0 driver package. However, I want to this TFT monitor with my desktop PC, based on a Asus P5E-V with an Intel G35 chipset.

Would I be able to use the IEGD driver for this chipset? It is not mentioned in the Readme.

Is there another workaorund for such buggy displays? A simple checkbox or registry entry "Force detect monitor" would do the job; unfortunately I did not find one.

[Aaron_B_Intel]

Try this

http://software.intel.com/en-us/forums//topic/56423

which is ultimately derived from this

http://softwarecommunity.intel.com/Wiki/Graphics/239.htm

[feelfree]

Thanks a lot for your suggestion.
I already did some tests with predefined DTD_n settings and setting TotalDTDCount to 5 manually in registry, but this did not help at all.
Now I did the test with a valid modeline and set registry with DTD Calculator. Still no luck - the Intel GMA Driver still doesn't detect my monitor through DVI :-(

[Aaron_B_Intel]

Look for the registry setting BitBashingSupport, and changeall of them to 3. It might help with the EDID detect.

[feelfree]

Unfortunately, this didn't help neither.
To debug the problem a little further, I reinstalled the original Intel drivers on my GM945 based notebook again, verified the same behaviour (hotplugging the monitor is detected since intel gma driver window gets a refresh), then did the same registry hacks you suggested; no luck.

To come to the conclusion:
There seems to be NO WAY to use a monitor without EDID data connected to an Intel based graphics card. The only solution I got (for the GM945, not for the G35) is to use the IEGD driver, which lacks other features I guess.

Sadly, I'll have to stick to my NVidia based graphics card (where my monitor works flawlessly) heating up my PC more than needed (since I don't need the 3D features).

[Aaron_B_Intel]

Was digging through the driver files today and found

;Default Mode to be applied in case of Legacy display on a first time event
;HKR,, LegacyDefaultXX,%REG_DWORD%,0x320
;HKR,, LegacyDefaultYY,%REG_DWORD%,0x258
;HKR,, LegacyDefaultRR,%REG_DWORD%,0x3c
;HKR,, LegacyDefaultBPP,%REG_DWORD%,0x20

Might want to try searching for "LegacyDefault" in the registry. Supposedly, these are hexadecimal representations of the default resoutions when the monitor does not have or support EDID (in this case 800x600x60x32. Can't guarantee it will work, but it's worth a shot.