Native LCD Res doesnt work in XP

[thetman2]

I have VAIO TZ170 with an 11.1" LCD. It has a native res of 1366x768. When I wiped vista and install xp with the latest drivers the max resolution I can set is 1024x768.

Here is my monInfo results:

Monitor
  Windows description......... Digital Flat Panel (1024x768)
  Manufacturer................ MS_
  ----------------------------
  Plug and Play ID............ MS_0003
  Serial number............... 13 (12000013)
  EDID data source............ Registry (stored)
  ----------------------------
  Manufacture date............ 2002
  EDID revision............... 1.3
  Display type and signal..... Digital
  Sync input support.......... n/a
  Screen size................. 2550 x 2550 mm (~155")
  Power management............ Active off/sleep

Color characteristics
  Display gamma............... 3.55
  Red chromaticity............ Rx 0.625 - Ry 0.340
  Green chromaticity.......... Gx 0.285 - Gy 0.605
  Blue chromaticity........... Bx 0.148 - By 0.063
  White point (default)....... Wx 0.281 - Wy 0.309

Timing characteristics
  VESA GTF support............ Supported
  Horizontal scan range....... 0-160kHz
  Vertical scan range......... 0-60Hz
  Video bandwidth............. 80MHz
  Extension blocks............ n/a
  Timing recommendation #1.... 1366x768 at 60Hz
      Modeline................ "1366x768" 76.100 1366 1430 1494 1643 768 769 770 772 -hsync -vsync
  Timing recommendation #2.... 1366x768 at 40Hz
      Modeline................ "1366x768" 76.090 1366 1622 2134 2464 768 785 786 772 -hsync -vsync

Standard timings supported
  1366 x  768 at  40Hz - MS_
  1366 x  768 at  60Hz - MS_

Raw EDID base
  00: 00 FF FF FF FF FF FF 00  36 7F 03 00 0D 00 00 00 
  10: 00 0C 01 03 80 FF FF FF  2F 00 00 A0 57 49 9B 26 
  20: 10 48 4F 00 00 00 01 01  01 01 01 01 01 01 01 01 
  30: 01 01 01 01 01 01 BA 1D  56 15 51 00 04 30 40 40 
  40: 11 00 00 00 00 00 00 18  B9 1D 56 4A 54 00 04 30 
  50: 00 00 11 60 00 00 00 00  00 18 00 00 00 FD 00 00 
  60: 3C 00 A0 08 00 00 00 00  00 00 00 00 00 00 00 00 
  70: 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 F5 

Display adapter
  Adapter description......... Mobile Intel 945 Express Chipset Family
  Adapter device ID........... 0x27A28086
  Display settings............ 1024x768, 32bpp

why cant I set a higher resolution.  even the intel gma software says the correct display mode but wont let me set it.
I have read other posts where DTDs needed to be changed.  I can do that just dont know what settings to use.

Thanks in advance for helping .

[Aaron_B_Intel]

Try

BA 1D 56 15 51 00 04 30 40 4011 00 00 00 00 00 00 18

Also possible: VAIO BIOS may be prohibiting 1366x768. Try 1364x768:

BA 1D 54 17 51 00 04 30 40 4011 00 00 00 00 00 00 18

The third possibility is the persistence bug which has been seen on many systems since driver release 14.33.

[thetman2]

I tried both neither worked. Thanks for the help though, I just went back to vista works fine there.