Try with the EVGA card in slot 2. Try connecting the monitor after the computer has booted.
Are you talking about 3840 x 2160 @ 60 Hz in Mac OS X 10.9.3 (non beta) using Display Port connection? I would like to see some evidence of that (screen shots, EDID dump, SwitchResX info, ioreg, whatever).
Try using SwitchResX to create a custom timing for 3840 x 2160 @ 30 Hz. Maybe the HDMI port only supports HDMI 1.1 speeds (165 MHz) in which case you would need to use Display Port or try 18 Hz refresh which the display probably won't accept.
the MacPro3,1 did boot if there was a second LCDisplay connected to one of the DVI ports at the same time.
yes, this is exactly what I'm talking about 3840x2160 @60Hz over DP
here you go:
EDID report generated by SwitchResX Version 4.4.0 (Intel - 64-bit) for display U28D590
-----------------------------------------------------
------------------- 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 4C 2D 80 0B 00 00 00 00
1 | 34 17 01 04 B5 3D 23 78 3A 5F B1 A2 57 4F A2 28
2 | 0F 50 54 BF EF 80 71 4F 81 00 81 C0 81 80 A9 C0
3 | B3 00 95 00 D1 00 4D D0 00 A0 F0 70 3E 80 30 20
4 | 35 00 5F 59 21 00 00 1A 56 5E 00 A0 A0 A0 29 50
5 | 30 20 35 00 5F 59 21 00 00 1A 00 00 00 FD 00 38
6 | 4B 1E 86 36 00 0A 20 20 20 20 20 20 00 00 00 FC
7 | 00 55 32 38 44 35 39 30 0A 20 20 20 20 20 01 9F
-----------------------------------------------------
0 1 2 3 4 5 6 7 8 9 A B C D E F
-----------------------------------------------------
0 | 02 03 0C F0 23 09 07 07 83 01 00 00 02 3A 80 18
1 | 71 38 2D 40 58 2C 45 00 5F 59 21 00 00 1E 00 00
2 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
3 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
4 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
5 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
6 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
7 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 97
-----------------------------------------------------
< 00FFFFFF FFFFFF00 4C2D800B 00000000 34170104 B53D2378 3A5FB1A2 574FA228 0F5054BF EF80714F 810081C0 8180A9C0 B3009500 D1004DD0 00A0F070 3E803020 35005F59 2100001A 565E00A0 A0A02950 30203500 5F592100 001A0000 00FD0038 4B1E8636 000A2020 20202020 000000FC 00553238 44353930 0A202020 2020019F 02030CF0 23090707 83010000 023A8018 71382D40 582C4500 5F592100 001E0000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000097 >
-----------------------------------------------------
{ 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x4C, 0x2D, 0x80, 0x0B, 0x00, 0x00, 0x00, 0x00, 0x34, 0x17, 0x01, 0x04, 0xB5, 0x3D, 0x23, 0x78, 0x3A, 0x5F, 0xB1, 0xA2, 0x57, 0x4F, 0xA2, 0x28, 0x0F, 0x50, 0x54, 0xBF, 0xEF, 0x80, 0x71, 0x4F, 0x81, 0x00, 0x81, 0xC0, 0x81, 0x80, 0xA9, 0xC0, 0xB3, 0x00, 0x95, 0x00, 0xD1, 0x00, 0x4D, 0xD0, 0x00, 0xA0, 0xF0, 0x70, 0x3E, 0x80, 0x30, 0x20, 0x35, 0x00, 0x5F, 0x59, 0x21, 0x00, 0x00, 0x1A, 0x56, 0x5E, 0x00, 0xA0, 0xA0, 0xA0, 0x29, 0x50, 0x30, 0x20, 0x35, 0x00, 0x5F, 0x59, 0x21, 0x00, 0x00, 0x1A, 0x00, 0x00, 0x00, 0xFD, 0x00, 0x38, 0x4B, 0x1E, 0x86, 0x36, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x55, 0x32, 0x38, 0x44, 0x35, 0x39, 0x30, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x01, 0x9F 0x02, 0x03, 0x0C, 0xF0, 0x23, 0x09, 0x07, 0x07, 0x83, 0x01, 0x00, 0x00, 0x02, 0x3A, 0x80, 0x18, 0x71, 0x38, 0x2D, 0x40, 0x58, 0x2C, 0x45, 0x00, 0x5F, 0x59, 0x21, 0x00, 0x00, 0x1E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x97 }
-----------------------------------------------------
Valid EDID block: checksum passed
-----------------------------------------------------
------------------- MAIN EDID BLOCK -----------------
-----------------------------------------------------
EDID Version........1.4
Manufacturer........SAM
Product Code........32779 (800B) (0B80)
Serial Number.......00000000
Manufactured........Week 52 of year 2013
Max H Size..........61 cm
Max V Size..........35 cm
Gamma...............2.20
Display Supported Features:
---------------------------
Power Management: Active off
Display type:
-------------
RGB 4:4:4 & YCrCb 4:4:4 & YCrCb 4:2:2 Color Encoding Formats
Display is non continuous frequency
Default color space is not sRGB standard
Preferred timing mode includes Native Pixel Format
Input signal & sync:
--------------------
Digital Input
10 Bits per Primary Color
DisplayPort is supported
Color info:
-----------
Red x = 0.634 Green x = 0.312 Blue x = 0.158 White x = 0.312
Red y = 0.341 Green y = 0.636 Blue y = 0.062 White y = 0.329
Established Timings:
--------------------
720 x 400 @ 70Hz
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 @ 60Hz
1024 x 768 @ 70Hz
1024 x 768 @ 75Hz
1280 x 1024 @ 75Hz
Manufacturer Reserved Timings:
------------------------------
1152 x 870 @ 75Hz
Standard Timing Identification:
-------------------------------
#0: 1152 x 864 @ 75Hz (714F)
#1: 1280 x 800 @ 60Hz (8100)
#2: 1280 x 720 @ 60Hz (81C0)
#3: 1280 x 1024 @ 60Hz (8180)
#4: 1600 x 900 @ 60Hz (A9C0)
#5: 1680 x 1050 @ 60Hz (B300)
#6: 1440 x 900 @ 60Hz (9500)
#7: 1920 x 1200 @ 60Hz (D100)
Monitor Description blocks:
---------------------------
Descriptor #0 - Timing definition:
Mode = 3840 x 2160 @ 59.997Hz
Pixel Clock............. 533.25 MHz Non-Interlaced
Horizontal Vertical
Active.................. 3840 pixels 2160 lines
Front Porch............. 48 pixels 3 lines
Sync Width.............. 32 pixels 5 lines
Back Porch.............. 80 pixels 54 lines
Blanking................ 160 pixels 62 lines
Total................... 4000 pixels 2222 lines
Scan Rate............... 133.312 kHz 59.997 Hz
Image Size.............. 607 mm 345 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Negative vertical polarity
* Positive horizontal polarity
Descriptor #1 - Timing definition:
Mode = 2560 x 1440 @ 59.951Hz
Pixel Clock............. 241.50 MHz Non-Interlaced
Horizontal Vertical
Active.................. 2560 pixels 1440 lines
Front Porch............. 48 pixels 3 lines
Sync Width.............. 32 pixels 5 lines
Back Porch.............. 80 pixels 33 lines
Blanking................ 160 pixels 41 lines
Total................... 2720 pixels 1481 lines
Scan Rate............... 88.787 kHz 59.951 Hz
Image Size.............. 607 mm 345 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Negative vertical polarity
* Positive horizontal polarity
Descriptor #2 - Monitor limits:
Horizontal frequency range.......30-134 kHz
Vertical frequency range.........56-75 Hz
Maximum bandwidth range..........540 MHz
GTF supported
Descriptor #3 - Monitor name:
U28D590
-----------------------------------------------------
------------ EXTENSION EDID BLOCK 1 ---------------
-----------------------------------------------------
CEA-EXT: CEA 861 Series Extension:
----------------------------------
Revision:..............................3
First DTD block at offset..............8
Display Supports:
Underscan on PC modes
Basic audio
YCbCr 4:4:4
YCbCr 4:2:2
Data Block Collection #1 - Type 1
Audio Type Block
Supported format: Linear Pulse Code Modulation (LPCM), on 2 channels
Supported freq: 32kHz, 44.1kHz, 48kHz
Supported sample sizes:16 bit, 20 bit, 24 bit
Data Block Collection #2 - Type 4
Speaker allocation data block
Front Left / Front Right
Front Left High / Front Right High
Detailed Timing Blocks - 0 is native
Detailed Timing Block #1 - Timing definition:
Mode = 1920 x 1080 @ 60.000Hz
Pixel Clock............. 148.50 MHz Non-Interlaced
Horizontal Vertical
Active.................. 1920 pixels 1080 lines
Front Porch............. 88 pixels 4 lines
Sync Width.............. 44 pixels 5 lines
Back Porch.............. 148 pixels 36 lines
Blanking................ 280 pixels 45 lines
Total................... 2200 pixels 1125 lines
Scan Rate............... 67.500 kHz 60.000 Hz
Image Size.............. 607 mm 345 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Positive vertical polarity
* Positive horizontal polarity