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Pixel doubling on 31khz monitors with custom drivers?

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lettuce:
So in theory would this work for LCD screens??

So what setting would i need to add in for my Pentranic 29" Multi-sync monitor?? These are the only spec i could find in the pdf manual...




Or though it states 800x600 it actually does 1024x768

newmanfamilyvlogs:
So it will sync on 15-40kHz without any switches/jumpers on the board?

I'm gonna take a stab at suggesting this:


--- Quote ---monitor_specs_0 = "15000-40000, 47.00-90.00, 0.600, 2.500, 2.800, 0.032, 0.096, 0.448, 0, 0, 640, 768"

--- End quote ---

bitbytebit or calamity are going to have to weigh in on it though.. I'm not sure what would be appropriate for the various porch values.

Edit: Based on calamity's suggestion that these monitors are sensitive to wrong ranges, please don't use the above values until the porches can be verified.

Calamity:

--- Quote from: lettuce on July 20, 2011, 02:19:10 pm ---So in theory would this work for LCD screens??

So what setting would i need to add in for my Pentranic 29" Multi-sync monitor?? These are the only spec i could find in the pdf manual...




Or though it states 800x600 it actually does 1024x768

--- End quote ---

But that's a CRT monitor isn't it?

I've read that Pentranic monitors are delicate and may even break with the wrong settings, so please BE CAREFUL. However, you shouldn't have problems if you respect the values in that chart. For the porch values, if that monitor has a decent EDID, you can use the MonInfo program (http://www.entechtaiwan.com/util/moninfo.shtm) to read EDID's info, you will retrieve one or more modelines written in its EDID, which your monitor will be confortable with. We can then use those values to cook a monitor_specs line that fits your monitor.

lettuce:
Hi, yeah it is a CTR monitor, i know the Pentranic monitor isnt the greatest, but was really the only option i had here in the UK...unless i wanted to pay over the odds for overseas shipping  :(. Ok downloaded the moninfo prog you suggested. Not sure how to use it correctly just loaded the prog and said it was anaylsing. Heres the info it came back with (sorry about the length)

Monitor
  Model name............... ABC 302008WS
  Manufacturer............. ABC
  Plug and Play ID......... ABC8014
  Serial number............ DP19052887ET
  Manufacture date......... 2008, ISO week 10
  Filter driver............ None
  -------------------------
  EDID revision............ 1.4
  Input signal type........ Digital (DisplayPort)
  Color bit depth.......... 8 bits per primary color
  Color encoding formats... RGB 4:4:4
  Screen size.............. 650 x 410 mm (30.3 in)
  Power management......... Standby, Suspend, Active off/sleep
  Extension blocs.......... 1 (CEA-EXT)
  -------------------------
  DDC/CI................... n/a

Color characteristics
  Default color space...... Non-sRGB
  Display gamma............ 2.20
  Red chromaticity......... Rx 0.678 - Ry 0.309
  Green chromaticity....... Gx 0.198 - Gy 0.698
  Blue chromaticity........ Bx 0.146 - By 0.060
  White point (default).... Wx 0.313 - Wy 0.329
  Additional descriptors... None

Timing characteristics
  Horizontal scan range.... 29-113kHz
  Vertical scan range...... 49-86Hz
  Video bandwidth.......... 280MHz
  CVT standard............. Not supported
  GTF standard............. Not supported
  Additional descriptors... None
  Preferred timing......... Yes
  Native/preferred timing.. 2560x1600p at 60Hz (16:10)
    Modeline............... "2560x1600" 268.000 2560 2608 2640 2720 1600 1603 1609 1646 +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  75Hz - VESA
    1024 x  768p at  60Hz - VESA
    1024 x  768p at  75Hz - VESA
    1280 x 1024p at  75Hz - VESA
    1280 x 1024p at  60Hz - VESA STD
    1600 x 1200p at  60Hz - VESA STD
    1920 x 1200p at  60Hz - VESA STD
    1920 x 1440p at  60Hz - VESA STD
    1152 x  864p at  75Hz - VESA STD
    1280 x  800p 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........... 5
  Detailed timing #1....... 1280x720p at 60Hz (16:9)
    Modeline............... "1280x720" 74.250 1280 1390 1430 1650 720 725 730 750 +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....... 720x480p at 60Hz (16:9)
    Modeline............... "720x480" 27.000 720 736 798 858 480 489 495 525 -hsync -vsync
  Detailed timing #4....... 1440x480i at 60Hz (16:9)
    Modeline............... "1440x480" 27.000 1440 1478 1602 1716 480 488 494 524 interlace -hsync -vsync
  Detailed timing #5....... 1920x1080p at 60Hz (16:9)
    Modeline............... "1920x1080" 148.500 1920 2008 2052 2200 1080 1084 1089 1125 +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 (4:3, 8:9)
     720 x  480i at  60Hz - Doublescan (16:9, 32:27)
    1920 x 1080p at  60Hz - HDTV (16:9, 1:1)
     720 x  576p at  50Hz - EDTV (4:3, 16:15)
     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 (4:3, 16:15)
     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

Report information
  Date generated........... 7/20/2011
  Software revision........ 2.60.0.964
  Data source.............. Sample
  Operating system......... 5.1.2600.2.Service Pack 3

Raw data
  00,FF,FF,FF,FF,FF,FF,00,04,43,14,80,89,DA,07,00,0A,12,01,04,A5,41,29,78,E2,8F,95,AD,4F,32,B2,25,
  0F,50,54,A5,4B,00,81,80,A9,40,D1,00,D1,40,71,4F,81,00,01,01,01,01,B0,68,00,A0,A0,40,2E,60,30,20,
  36,00,81,90,21,00,00,1E,00,00,00,FF,00,44,50,31,39,30,35,32,38,38,37,45,54,0A,00,00,00,FC,00,41,
  42,43,20,33,30,32,30,30,38,57,53,0A,00,00,00,FD,00,31,56,1D,71,1C,00,0A,20,20,20,20,20,20,01,C4,
  02,03,14,F5,4F,01,02,03,04,05,06,07,10,11,12,13,14,15,16,1F,01,1D,00,72,51,D0,1E,20,6E,28,55,00,
  BA,88,21,00,00,1E,01,1D,80,18,71,1C,16,20,58,2C,25,00,BA,88,21,00,00,9E,8C,0A,D0,8A,20,E0,2D,10,
  10,3E,96,00,BA,88,21,00,00,18,8C,0A,A0,14,51,F0,16,00,26,7C,43,00,BA,88,21,00,00,98,02,3A,80,18,
  71,38,2D,40,58,2C,45,00,BA,88,21,00,00,1E,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,24

Calamity:
That log seems to come from an Acer 20" monitor, not from the Pentranic. Try to get the right one with your Pentranic monitor attached, notice the MonInfo program has a list on the left for available plug and play displays.

Don't get me wrong, I wish I had a multisync monitor around, it's only that I read a story of a Pentranic monitor broken for setting it to 1024x768, maybe a different model:

http://www.retrovicio.org/foro/showthread.php?8507-Monitor-Pentranic-K.O.-por-altas-resoluciones

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