[SOLVED]T61 new panel: have to change EDID

Question

Hi Compañeros,
I have a very special problem here and i hope, someone could help me fixing it ;-)
My Laptops (Lenovo T61 14.1'' SXGA 1400x1050 Intel IGP) Panel broke and i ordered a new one, same modelnumber.
I installed it, but the screen stays black, is just somehow "lit" but nothing to be seen.
Ok, so i changed the inverter too, still no luck.
dmesg shows the following:
[ 0.697497] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[ 0.749439] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 24
[ 0.749507] Raw EDID:
[ 0.749557] 00 ff ff ff ff ff ff 00 30 ae 22 40 00 00 00 00
[ 0.749623] 1a 11 01 03 80 1d 15 78 ea 6f 95 9c 54 4c 87 26
[ 0.749674] 21 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
[ 0.749725] 01 01 01 01 01 01 30 2a 78 20 51 1a 10 40 30 70
[ 0.749777] 00 ff ff ff ff ff ff 00 30 ae 22 40 00 00 00 00
[ 0.749837] 1a 11 01 03 80 1d 15 78 ea 6f 95 9c 54 4c 87 26
[ 0.749900] 21 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
[ 0.749973] 01 01 01 01 01 01 30 2a 78 20 51 1a 10 40 30 70
ok, I investigated further and found
http://forum.thinkpads.com/viewtopic.php?f=29&t=77733  and
http://www.thinkwiki.org/wiki/Installin … /T60_or_61
I had to read that there is some supercool logic that prevents panels not certified by lenovo from beeing activated. unbelievable.
*Sigh* I even managed to read the EDID of my old panel, which is:
EDID BYTES:
0x 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00 | 00 FF FF FF FF FF FF 00 30 AE 22 40 00 00 00 00
10 | 00 0F 01 03 80 1D 15 78 EA 2D 05 97 57 51 8A 27
20 | 23 50 54 21 08 00 81 80 01 01 01 01 01 01 01 01
30 | 01 01 01 01 01 01 30 2A 78 20 51 1A 10 40 30 70
40 | 13 00 1E D6 10 00 00 19 25 23 78 20 51 1A 10 40
50 | 30 70 13 00 1E D6 10 00 00 19 00 00 00 0F 00 90
60 | 43 32 90 43 28 0F 01 00 4C A3 50 34 00 00 00 FE
70 | 00 4C 54 4E 31 34 31 50 34 2D 4C 30 32 0A 00 19
and although i'm just a normal user i do see differences here :-)
My question now:
How do i get this f****** vendor id into my nonglare new panel?
For Win-users there is Powerstrip, but you have to pay a lot and pm to author for unlocking the writing abillity…
But it should be possible to change these values.
How do i do this?
Any help appreciated.
Thank you
Last edited by dogo77 (2011-11-28 09:54:02)

Answer 1

Hi again.
So, this morning i found the solution on this very fine blog:
https://blog.voodoo-arts.net/content/ed … C3%A4ndern
everything worked smothely. Maybe somtimes this will be a help for others :-)
nevertheless, thanks for reading.