Threaded Mode | Linear Mode

m8mbl · 10-08-2014, 10:25 PM

Hi can anyone explain why 2560x1440 is not in the standard timings from the below EDID?

The reason i ask is because I am having issues getting the native resolution via HDMI.

Thanks in advanced

Monitor
Model name............... TBD
Manufacturer............. WOR
Plug and Play ID......... WOR2760
Serial number............ NA
Manufacture date......... 2012, ISO week 1
Filter driver............ None
-------------------------
EDID revision............ 1.4
Input signal type........ Digital (HDMI-b)
Color bit depth.......... 8 bits per primary color
Color encoding formats... RGB 4:4:4, YCrCb 4:4:4, YCrCb 4:2:2
Screen size.............. 600 x 340 mm (27.2 in)
Power management......... Standby, Suspend, Active off/sleep
Extension blocs.......... 1 (CEA-EXT)
-------------------------
DDC/CI................... Supported
MCCS revison............. 2.1
Display technology....... TFT
Controller............... Mstar
Firmware revision........ 1.0
Firmware flags........... 0x0000005A
Active power on time..... Not supported
Power consumption........ Not supported
Current frequency........ 67.50kHz, 60.00Hz

Color characteristics
Default color space...... sRGB
Display gamma............ 2.20
Red chromaticity......... Rx 0.640 - Ry 0.330
Green chromaticity....... Gx 0.300 - Gy 0.600
Blue chromaticity........ Bx 0.150 - By 0.060
White point (default).... Wx 0.313 - Wy 0.329
Additional descriptors... None

Timing characteristics
Horizontal scan range.... 15-99kHz
Vertical scan range...... 23-76Hz
Video bandwidth.......... 250MHz
CVT standard............. Not supported
GTF standard............. Not supported
Additional descriptors... None
Preferred timing......... Yes
Native/preferred timing.. 2560x1440p at 60Hz (16:9)
Modeline............... "2560x1440" 241.500 2560 2608 2640 2720 1440 1443 1448 1481 +hsync -vsync

Standard timings supported
720 x 400p at 70Hz - IBM VGA
640 x 480p at 60Hz - IBM VGA
640 x 480p at 75Hz - VESA
800 x 600p at 60Hz - VESA
800 x 600p at 72Hz - VESA
800 x 600p at 75Hz - VESA
1024 x 768p at 60Hz - VESA
1024 x 768p at 75Hz - VESA
1280 x 1024p at 75Hz - VESA
1152 x 864p at 75Hz - VESA STD
1280 x 720p at 60Hz - VESA STD
1280 x 1024p at 60Hz - VESA STD
1440 x 900p at 60Hz - VESA STD
1680 x 1050p at 60Hz - VESA STD
1920 x 1080p at 60Hz - VESA STD

EIA/CEA-861 Information
Revision number.......... 3
IT underscan............. Supported
Basic audio.............. Supported
YCbCr 4:4:4.............. Supported
YCbCr 4:2:2.............. Supported
Native formats........... 1
Detailed timing #1....... 1920x1080p at 60Hz (16:9)
Modeline............... "1920x1080" 148.500 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync
Detailed timing #2....... 1920x1080i at 60Hz (16:9)
Modeline............... "1920x1080" 74.250 1920 2008 2052 2200 1080 1084 1094 1124 interlace +hsync +vsync
Detailed timing #3....... 1280x720p at 60Hz (16:9)
Modeline............... "1280x720" 74.250 1280 1390 1430 1650 720 725 730 750 +hsync +vsync
Detailed timing #4....... 720x480p at 60Hz (16:9)
Modeline............... "720x480" 27.000 720 736 798 858 480 489 495 525 -hsync -vsync
Detailed timing #5....... 1280x720p at 50Hz (16:9)
Modeline............... "1280x720" 74.250 1280 1720 1760 1980 720 725 730 750 +hsync +vsync

CE video identifiers (VICs) - timing/formats supported
640 x 480p at 60Hz - Default (4:3, 1:1)
720 x 480p at 60Hz - EDTV (4:3, 8:9)
720 x 480p at 60Hz - EDTV (16:9, 32:27)
1280 x 720p at 60Hz - HDTV (16:9, 1:1)
1920 x 1080i at 60Hz - HDTV (16:9, 1:1)
720 x 480i at 60Hz - Doublescan (16:9, 32:27)
1920 x 1080p at 60Hz - HDTV (16:9, 1:1) [Native]
720 x 576p at 50Hz - EDTV (16:9, 64:45)
1280 x 720p at 50Hz - HDTV (16:9, 1:1)
1920 x 1080i at 50Hz - HDTV (16:9, 1:1)
720 x 576i at 50Hz - Doublescan (16:9, 64:45)
1920 x 1080p at 50Hz - HDTV (16:9, 1:1)
NB: NTSC refresh rate = (Hz*1000)/1001

CE audio data (formats supported)
LPCM 2-channel, 16/20/24 bit depths at 32/44/48 kHz

CE speaker allocation data
Channel configuration.... 2.0
Front left/right......... Yes
Front LFE................ No
Front center............. No
Rear left/right.......... No
Rear center.............. No
Front left/right center.. No
Rear left/right center... No
Rear LFE................. No

CE vendor specific data (VSDB)
IEEE registration number. 0x000C03
CEC physical address..... 1.0.0.0
Maximum TMDS clock....... 165MHz

Report information
Date generated........... 08/10/2014
Software revision........ 2.90.0.1000
Data source.............. Real-time 0x0041
Operating system......... 6.2.9200.2

Raw data
00,FF,FF,FF,FF,FF,FF,00,5D,F2,60,27,00,00,00,00,01,16,01,04,A3,3C,22,78,FE,EE,95,A3,54,4C,99,26,
0F,50,54,A5,CB,00,71,4F,81,C0,81,80,95,00,B3,00,D1,C0,01,01,01,01,56,5E,00,A0,A0,A0,29,50,30,20,
35,00,55,50,21,00,00,1A,00,00,00,FF,00,4E,41,0A,20,20,20,20,20,20,20,20,20,20,00,00,00,FD,00,17,
4C,0F,63,19,00,0A,20,20,20,20,20,20,00,00,00,FC,00,54,42,44,0A,20,20,20,20,20,20,20,20,20,01,16,
02,03,1F,F1,4C,01,02,03,04,05,07,90,12,13,14,16,1F,23,09,07,07,83,01,00,00,65,03,0C,00,10,00,02,
3A,80,18,71,38,2D,40,58,2C,45,00,FE,1F,11,00,00,1E,01,1D,80,18,71,1C,16,20,58,2C,25,00,FE,1F,11,
00,00,9E,01,1D,00,72,51,D0,1E,20,6E,28,55,00,FE,1F,11,00,00,1E,8C,0A,D0,8A,20,E0,2D,10,10,3E,96,
00,FE,1F,11,00,00,18,01,1D,00,BC,52,D0,1E,20,B8,28,55,40,E8,12,11,00,00,1E,00,00,00,00,00,00,07

***ToastyX*** · 10-09-2014, 11:42 AM

(10-08-2014 10:25 PM)m8mbl Wrote: Hi can anyone explain why 2560x1440 is not in the standard timings from the below EDID?

The reason i ask is because I am having issues getting the native resolution via HDMI.

2560x1440 @ 60 Hz is already defined as the native/preferred timing. It doesn't need to be added as a standard timing. It's not possible anyway because of EDID limitations.

You're having issues getting the native resolution because HDMI often has a 165 MHz pixel clock limit, but 2560x1440 @ 60 Hz requires 241.5 MHz. The monitor also defines a 165 MHz maximum TMDS clock limit, which affects AMD/ATI and Intel drivers. CRU with the hdmi.dat file and the pixel clock patchers can get around this limit for AMD/ATI and NVIDIA drivers. I don't have a solution for Intel. You can try adding 2560x1440 @ 40 Hz if the monitor can support that.

m8mbl · 10-10-2014, 09:03 PM

thanks, that makes sense, using customresolutionapp with the intel app i only get the option of selecting 39 Hz before it complains their isnt enough bandwidth, while using 39Hz all i get is a black screen. However using Linux from this laptop the native resolution works at 60Hz and also while using a MacBook Pro i am also able to achieve this. Just seems strange in Windows 7 and 8.1 i am unable.

However thanks for your help.