Blank screen after messing around with powerstrip (edid?)

[jussi2]

Hi !

Last night i was trying to get a pixel perfect image for a sony lcd tv from thinkpad t61. I mistakely added some custom resolutions apparently to the laptop's monitor, because when i this morning powered the laptop, display failed to show any lifesigns, except for the backlight.

Native resolution is 1280 x 800 but windows reports max res. is 1024 x 768. I got a monitor inf from lenovo so that max res. is now what it should be. changing the res. to native one didn't help, still no picture.

Maybe edid got somehow corrupted...

Any help would be much appreciated.
Thanks.

Code:

Monitor
  Windows description......... ThinkPad Display 1280x800
  Manufacturer................ LEN
  ????????????????????????????
  Plug and Play ID............ LEN4040
  Serial number............... n/a
  EDID data source............ Registry (stored)
  ????????????????????????????
  Manufacture date............ 2005
  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....... 0-105kHz
  Vertical scan range......... 0-60Hz
  Video bandwidth............. 70MHz
  Extension blocks............ n/a
  Timing recommendation #1.... 1024x768 at 60Hz
      Modeline................ "1024x768" 65,000 1024 1048 1184 1344 768 771 777 806 -hsync -vsync
  Timing recommendation #2.... 1024x768 at 50Hz
      Modeline................ "1024x768" 54,160 1024 1048 1184 1344 768 771 777 806 -hsync -vsync

Standard timings supported
  1024 x  768 at  50Hz - LEN
  1024 x  768 at  60Hz - LEN

Raw EDID base
  00: 00 FF FF FF FF FF FF 00  30 AE 40 40 00 00 00 00 
  10: 00 0F 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 64 19  00 40 41 00 26 30 18 88 
  40: 36 00 00 00 00 00 00 18  28 15 00 40 41 00 26 30 
  50: 18 88 36 00 00 00 00 00  00 18 00 00 00 FD 00 00 
  60: 3C 00 69 07 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 44 

Display adapter
  Adapter description......... Mobile Intel(R) 965 Express Chipset Family
  Adapter device ID........... 0x2A038086
  Display settings............ 1280x800, 32bpp

[Rik Wang]

I suppose its possible, but not by PowerStrip: you are having problems with the digital panel and PowerStrip doesn't support Intel digital connections, only analog.

Post your moninfo.ini file, which is automatically created in the MonInfo folder.

[jussi2]

I can choose the native resolution but seems that driver is still sending 1024 x 768 or something weird to the lcd.

Code:

[PCI Devices]
FF=PCI00000,PCI00004,PCI00008,PCI0000C,PCI00010,PCI00014,PCI00018,PCI0001C,PCI00020,PCI00024,PCI0002C,PCI00030,PCI00034,PCI0003C,CAP00010,CAP00011,CAP00012,CAP00020,CAP00021,CAP00022,FUNC
00=2A008086,20900106,0600000C,00000000,00000000,00000000,00000000,00000000,00000000,00000000,20B317AA,00000000,000000E0,00000000,910A0009,3000642C,00000004,00000000,00000000,00000000,0000
01=2A028086,00900007,0300000C,00800000,F8100004,00000000,E000000C,00000000,00001801,00000000,20B517AA,00000000,00000090,00000110,0000D005,9C0D1520,00000000,00230001,01010000,94000101,0010
02=2A038086,00900007,0380000C,00800000,F8200004,00000000,00000000,00000000,00000000,00000000,20B517AA,00000000,000000D0,00000000,00230001,01010000,94000101,00000000,00000000,00000000,0011
03=10498086,00100107,02000003,00000000,FE000000,FE025000,00001841,00000000,00000000,00000000,20B917AA,00000000,000000C8,00000114,C822D001,0D002000,00800005,00800005,00000000,00000000,00C8
04=28348086,02800005,0C030003,00800000,00000000,00000000,00000000,00000000,00001861,00000000,20AA17AA,00000000,00000000,00000114,00000000,00000000,00000000,00000000,00000000,00000000,00D0
05=28358086,02800005,0C030003,00000000,00000000,00000000,00000000,00000000,00001881,00000000,20AA17AA,00000000,00000000,00000215,00000000,00000000,00000000,00000000,00000000,00000000,00D1
06=283A8086,02900106,0C032003,00000000,FE226400,00000000,00000000,00000000,00000000,00000000,20AB17AA,00000000,00000050,00000316,C9C20001,00000000,20A0000A,00000000,00000000,00000000,00D7
07=284B8086,00100106,04030003,00000010,FE020004,00000000,00000000,00000000,00000000,00000000,20AC17AA,00000000,00000050,00000211,C8426001,00000000,00000000,00807005,00000000,00000000,00D8
08=283F8086,00100107,06040003,00810010,00000000,00000000,00020200,20002020,FDF0FC00,F801F801,00000000,00000000,00000040,00040114,01418010,00008FC0,00100000,00009005,00000000,00000000,00E0
09=28418086,00100107,06040003,00810010,00000000,00000000,00030300,20003030,DF30DC00,DFE1DFE1,00000000,00000000,00000040,00040215,01418010,00008FC0,00100000,00009005,00000000,00000000,00E1
0A=28438086,00100107,06040003,00810010,00000000,00000000,00040400,20004040,D9F0D800,DFB1DFB1,00000000,00000000,00000040,00040316,01418010,00008FC0,00100000,00009005,00000000,00000000,00E2
0B=28458086,00100107,06040003,00810010,00000000,00000000,000C0500,20005050,D5F0D400,DF81DF81,00000000,00000000,00000040,00040417,01418010,00008FC0,00100000,00009005,00000000,00000000,00E3
0C=28478086,00100107,06040003,00810010,00000000,00000000,00140D00,20006060,D1F0D000,DF51DF51,00000000,00000000,00000040,00040114,01418010,00008FC0,00100000,00009005,00000000,00000000,00E4
0D=28308086,02800005,0C030003,00800000,00000000,00000000,00000000,00000000,000018A1,00000000,20AA17AA,00000000,00000000,00000110,00000000,00000000,00000000,00000000,00000000,00000000,00E8
0E=28318086,02800005,0C030003,00000000,00000000,00000000,00000000,00000000,000018C1,00000000,20AA17AA,00000000,00000000,00000211,00000000,00000000,00000000,00000000,00000000,00000000,00E9
0F=28328086,02800005,0C030003,00000000,00000000,00000000,00000000,00000000,000018E1,00000000,20AA17AA,00000000,00000000,00000312,00000000,00000000,00000000,00000000,00000000,00000000,00EA
10=28368086,02900106,0C032003,00000000,FE226800,00000000,00000000,00000000,00000000,00000000,20AB17AA,00000000,00000050,00000413,C9C25801,00000000,20A0000A,20A0000A,00000000,009F2020,00EF
11=24488086,00100007,060401F3,00010000,00000000,00000000,20181500,2280A070,FBF0F830,F7F1F401,00000000,00000000,00000050,000000FF,0000000D,20AE17AA,00000000,00000000,00000000,00000000,00F0
12=28118086,02100007,06010003,00800000,00000000,00000000,00000000,00000000,00000000,00000000,20B617AA,00000000,000000E0,00000000,100C0009,C30C0200,00000000,00000000,00000000,00000000,00F8
13=28288086,02B00005,01018003,00000000,00000001,00000001,00000001,00000001,00001C31,00001C21,20A817AA,00000000,00000070,000002FF,40030001,00000008,00000000,00000000,00000000,00000000,00FA
14=283E8086,02800103,0C050003,00000000,FE226C00,00000000,00000000,00000000,00001C41,00000000,20A917AA,00000000,00000000,0000010B,00000000,00000000,00000000,00000000,00000000,00000000,00FB
15=42308086,40100106,02800061,00000010,DF3FE004,00000000,00000000,00000000,00000000,00000000,10118086,00000000,000000C8,00000111,C823D001,0D000000,0080E005,0080E005,00000000,00000000,0300
[I2C Devices]
01.02=FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
01.03=0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
01.04=0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

[Rik Wang]

Well, its not an EDID issue. There's probably a very simple solution to your problem, but do this:

1. Boot up in Safe Mode
2. Open Device Manager
3. Delete all entries *under* "Monitors" and "Display adapters"
4. Reboot

Windows should redetect your hardware (including your internal panel), and reconfigure itself accordingly.

[jussi2]

Thanks, i'll try that later.

I just hope the vga output still works if that would fail.

[Rik Wang]

To be sure, do the steps above with external VGA disconnected.

The key is can you access the laptop's BIOS Setup program or not? If you can, and it appears on the internal panel, you are Ok. If not, go no further.

[jussi2]

There is no picture whatsoever on the internal lcd, not even during boot, i need to be connected to an external monitor (tv) to be able to see something.

I can access bios but the internal panel may not work...

[Rik Wang]

I'm afraid that didn't wasn't clear. Can you access the BIOS Setup on the internal LCD or not?

[jussi2]

No, i can't

[Rik Wang]

Ok, then you want to be careful - there's probably an embedded EDID on the LVDS that's corrupted.

The original EDID is available in the registry and I'll place it as a string here for your reference.

Code:

00FFFFFFFFFFFF0030AE404000000000000F010380FFFFFF2F0000A057499B2610484F00000001010101010101010101010101010101641900404100263018883600000000000018281500404100263018883600000000000018000000FD00003C00690700000000000000000000000000000000000000000000000000000044

[jussi2]

There are some extra monitors and maybe adapters, that Plug n Play is propably the original and thinkpad display i added later on. Defaul monitors are the sony lcd tv.
Maybe deleting some of them does something positive?

Should i place that string of code somewhere in the registry?

ByTheWay: i still have powerstrip installed, i should propably remove it

[Rik Wang]

I don't expect those entries make any difference. The EDID data is already in your registry. Its the EEPROM in your panel that probably needs updating.

Send me an email with a link to this thread so I know who you are.

[jussi2]

Done, but can powerstrip update the eeprom?

[Rik Wang]

Actually, registered users of PowerStrip can update the EEPROM with an EDID (if its not write-protected), but it won't help you because PowerStrip won't touch (read or write) an Intel LVDS/embedded EDID on a laptop.

But I got your email and will take this up with you that way.

[jussi2]

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