Using VGA display without EDID possible?

Thanks - that sounds promising.
Does the (mini) Display Port output behave the same way the DVI does? If I remember right the DVI-I output (like from my MBP) has pins directly used for the analog VGA signal - the mini Display Port on the other hand needs an active electronic adapter to create an analog VGA signal (please correct me if I'm wrong, I'm not really an expert regarding the new Display Port standard).

I am pretty sure that the display has no EDID (it's this one by the way: http://www.origenae.co.kr/en/panel_t12.htm ). It says "compatible with OS X" but it was released early 2008 before the Display Ports had been widely integrated in Apple's devices).

The PC motherboard with onboard graphics I mentioned in the first post is this one http://gigabyte.com/products/product-page.aspx?pid=2946 ). I got a signal in the pre-boot environment but as soon as Windows 7 or Vista finished loading the VGA output was turned off. The Gigabyte support stated that this behavior is caused by monitors without any EDID combined the nVidia graphics driver of Win 7/Vista (it worked under XP). I can use it with an ATI graphics card and its driver shows me no details at all about the connected display (same with tools like "Monitor Asset Manager").

Is there a tool for OS X/SL to check a connected display's EDID (on my MBP)?

Maybe OS X handles these "graphics output controls" differently (anyone knows further details?) compared to 7/Vista but because of the customer comment to the Display Port-VGA adapter and the fact that there's a nVidia graphics card built in the Mac mini I'd rather like to be careful...

Thanks for the tool tip. Seems like the display has EDID after all:

Exported EDID from SwitchResX:

{quote}DDC block report generated by SwitchResX version 4.1.6 for display



-----------------------------------------------------
------------------- RAW DATA ------------------------
-----------------------------------------------------
0 1 2 3 4 5 6 7 8 9 A B C D E F
-----------------------------------------------------
0 | 00 FF FF FF FF FF FF 00 4A AE 00 02 01 01 01 01
1 | 1E 0C 01 03 6E 24 1B 78 EA 8A 01 9A 58 52 8B 28
2 | 1E 50 54 FF FF 80 61 40 61 4F D1 C0 71 4F 81 4F
3 | 81 59 81 99 A9 40 BC 1B 00 BA 50 20 1C 30 30 20
4 | 36 00 44 0A 20 20 20 20 00 00 00 FF 00 31 0A 20
5 | 20 20 20 20 20 20 20 20 20 20 00 00 00 FD 00 2B
6 | 55 14 5C 0E 00 0A 20 20 20 20 20 20 20 00 00 FF
7 | 00 30 30 30 30 30 31 0A 20 20 20 20 20 20 00 B0

-----------------------------------------------------
< 00FFFFFF FFFFFF00 4AAE0002 01010101 1E0C0103 6E241B78 EA8A019A 58528B28 1E5054FF FF806140 614FD1C0 714F814F 81598199 A940BC1B 00BA5020 1C303020 3600440A 20202020 000000FF 00310A20 20202020 20202020 20200000 00FD002B 55145C0E 000A2020 20202020 200000FF 00303030 3030310A 20202020 202000B0 >

-----------------------------------------------------
{ 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x4A, 0xAE, 0x00, 0x02, 0x01, 0x01, 0x01, 0x01, 0x1E, 0x0C, 0x01, 0x03, 0x6E, 0x24, 0x1B, 0x78, 0xEA, 0x8A, 0x01, 0x9A, 0x58, 0x52, 0x8B, 0x28, 0x1E, 0x50, 0x54, 0xFF, 0xFF, 0x80, 0x61, 0x40, 0x61, 0x4F, 0xD1, 0xC0, 0x71, 0x4F, 0x81, 0x4F, 0x81, 0x59, 0x81, 0x99, 0xA9, 0x40, 0xBC, 0x1B, 0x00, 0xBA, 0x50, 0x20, 0x1C, 0x30, 0x30, 0x20, 0x36, 0x00, 0x44, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x31, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xFD, 0x00, 0x2B, 0x55, 0x14, 0x5C, 0x0E, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0xFF, 0x00, 0x30, 0x30, 0x30, 0x30, 0x30, 0x31, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0xB0, }

-----------------------------------------------------
Valid EDID block: checksum passed

-----------------------------------------------------
------------------- MAIN EDID BLOCK -----------------
-----------------------------------------------------

EDID Version........1.3
Manufacturer........RUN
Product Code........2 (0002) (0200)
Serial Number.......01010101

Manufactured........Week 30 of year 2002
Max H Size..........36 cm
Max V Size..........27 cm
Gamma...............2,20

Display Supported Features:
---------------------------
Power Management: Active off Power Management: Suspend Power Management: Standby

Display type:
-------------
RGB color display
Display is non continuous frequency
Default color space is not sRGB standard
Preferred timing mode includes Native Pixel Format


Input signal & sync:
--------------------
Analog input with: 0.700V / 0.000V
Sync on green
Separate Sync
Composite Sync


Color info:
-----------
Red x = 0,604 Green x = 0,322 Blue x = 0,156 White x = 0,312
Red y = 0,344 Green y = 0,545 Blue y = 0,117 White y = 0,329

Established Timings:
--------------------
720 x 400 @ 70Hz
720 x 400 @ 88Hz
640 x 480 @ 60Hz
640 x 480 @ 67Hz
640 x 480 @ 72Hz
640 x 480 @ 75Hz
800 x 600 @ 56Hz
800 x 600 @ 60Hz
800 x 600 @ 72Hz
800 x 600 @ 75Hz
832 x 624 @ 75Hz
1024 x 768 @ 87Hz
1024 x 768 @ 60Hz
1024 x 768 @ 70Hz
1024 x 768 @ 75Hz
1280 x 1024 @ 75Hz

Manufacturer Reserved Timings:
------------------------------
1152 x 870 @ 75Hz

Standard Timing Identification:
-------------------------------
#0: 1024 x 768 @ 60Hz (6140)
#1: 1024 x 768 @ 75Hz (614F)
#2: 1920 x 1080 @ 60Hz (D1C0)
#3: 1152 x 864 @ 75Hz (714F)
#4: 1280 x 960 @ 75Hz (814F)
#5: 1280 x 960 @ 85Hz (8159)
#6: 1280 x 1024 @ 85Hz (8199)
#7: 1600 x 1200 @ 60Hz (A940)

Monitor Description blocks:
---------------------------
Descriptor #0 - Timing definition:
Mode = 1280 x 800 @ 58,492Hz
Pixel Clock............. 71,00 MHz Non-Interlaced

Horizontal Vertical
Active.................. 1280 pixels 800 lines
Front Porch............. 48 pixels 3 lines
Sync Width.............. 32 pixels 6 lines
Back Porch.............. 106 pixels 19 lines
Blanking................ 186 pixels 28 lines
Total................... 1466 pixels 828 lines
Scan Rate............... 48,431 kHz 58,492 Hz

Image Size.............. 580 mm 10 mm
Border.................. 32 pixels 32 lines

Seq Stereo (Rt. Sync = 1)
Sync: Analog composite with Sync on green

Descriptor #1 - Serial number:
1

Descriptor #2 - Monitor limits:
Horizontal frequency range.......20-92 kHz
Vertical frequency range.........43-85 Hz
Maximum bandwidth unspecified

Descriptor #3 - Timing definition:
Mode = 0 x 816 @ 1,452Hz
Pixel Clock............. 0,32 MHz Non-Interlaced

Horizontal Vertical
Active.................. 0 pixels 816 lines
Front Porch............. 48 pixels 35 lines
Sync Width.............. 48 pixels 33 lines
Back Porch.............. 159 pixels -20 lines
Blanking................ 255 pixels 48 lines
Total................... 255 pixels 864 lines
Scan Rate............... 1,255 kHz 1,452 Hz

Image Size.............. 544 mm 32 mm
Border.................. 32 pixels 32 lines

Seq Stereo (Rt. Sync = 1)
Sync: Analog composite with Sync on green

{quote}

Can you evaluate these details? Am I good to go? 🙂