06-09-2016, 12:24 PM
*Apologies if this is in the wrong subforum*
I am seeking assistance with a potential screen whitelist. Background is that i upgraded my screen from a lowly 1366x768 to FHD. Problem is there is an EDID table in two modules in the bios and because my screen is not purchased from lenovo (lenovo custom edid found in the table), i lost brightness control. The screen is always at 100% brightness and buttons don't work to change it. I have tried injecting my screen's edid in the two tables but this didn't fix it. Therefore i decided to seek assistance from someone out here more skilled at bios modding than myself.
Below are the two modules that contain an edid table (whitelist)
8133-4616...
CC71-B046...
The bios can be downloaded from here http://support.lenovo.com/au/en/downloads/ds102109
Sample edid for B140HAN01.2 found in bios edid table
00 FF FF FF FF FF FF 00 30 AE A3 40 00 00 00 00
00 16 01 04 95 1F 11 78 EA 87 E5 A4 56 50 9E 26
0D 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 14 37 80 B8 70 38 24 40 10 10
3E 00 35 AD 10 00 00 18 14 37 80 D0 70 38 24 40
10 10 3E 00 35 AD 10 00 00 18 00 00 00 0F 00 D1
09 3B D1 09 3B 1E 0A 00 06 AF 3D 12 00 00 00 FE
00 42 31 34 30 48 41 4E 30 31 2E 32 20 0A 00 C6
My screen is a B140HAN with the following edid
00 FF FF FF FF FF FF 00 06 AF 3D 13 00 00 00 00
22 17 01 04 95 1F 11 78 02 87 E5 A4 56 50 9E 26
0D 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 14 37 80 B8 70 38 24 40 10 10
3E 00 35 AD 10 00 00 1A 10 2C 80 B8 70 38 24 40
10 10 3E 00 35 AD 10 00 00 1A 00 00 00 FE 00 4D
31 57 48 56 81 42 31 34 30 48 41 4E 00 00 00 00
00 00 41 21 9E 00 00 00 00 0A 01 0A 20 20 00 71
Tldr: DIY fhd screen upgrade thinkpad t450 lost brightness control (stuck at 100% brightness) found 2 bios modules with an EDID table, injecting my edid in modules didn't fix. Seeking assistance
I'll happily compensate any helper for their time because lenovo quotes astronomical prices to change screens after warranty.
If you can, please point me in the right direction i'll be very grateful. Thanks.
I am seeking assistance with a potential screen whitelist. Background is that i upgraded my screen from a lowly 1366x768 to FHD. Problem is there is an EDID table in two modules in the bios and because my screen is not purchased from lenovo (lenovo custom edid found in the table), i lost brightness control. The screen is always at 100% brightness and buttons don't work to change it. I have tried injecting my screen's edid in the two tables but this didn't fix it. Therefore i decided to seek assistance from someone out here more skilled at bios modding than myself.
Below are the two modules that contain an edid table (whitelist)
8133-4616...
CC71-B046...
The bios can be downloaded from here http://support.lenovo.com/au/en/downloads/ds102109
Sample edid for B140HAN01.2 found in bios edid table
00 FF FF FF FF FF FF 00 30 AE A3 40 00 00 00 00
00 16 01 04 95 1F 11 78 EA 87 E5 A4 56 50 9E 26
0D 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 14 37 80 B8 70 38 24 40 10 10
3E 00 35 AD 10 00 00 18 14 37 80 D0 70 38 24 40
10 10 3E 00 35 AD 10 00 00 18 00 00 00 0F 00 D1
09 3B D1 09 3B 1E 0A 00 06 AF 3D 12 00 00 00 FE
00 42 31 34 30 48 41 4E 30 31 2E 32 20 0A 00 C6
My screen is a B140HAN with the following edid
00 FF FF FF FF FF FF 00 06 AF 3D 13 00 00 00 00
22 17 01 04 95 1F 11 78 02 87 E5 A4 56 50 9E 26
0D 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 14 37 80 B8 70 38 24 40 10 10
3E 00 35 AD 10 00 00 1A 10 2C 80 B8 70 38 24 40
10 10 3E 00 35 AD 10 00 00 1A 00 00 00 FE 00 4D
31 57 48 56 81 42 31 34 30 48 41 4E 00 00 00 00
00 00 41 21 9E 00 00 00 00 0A 01 0A 20 20 00 71
Tldr: DIY fhd screen upgrade thinkpad t450 lost brightness control (stuck at 100% brightness) found 2 bios modules with an EDID table, injecting my edid in modules didn't fix. Seeking assistance
I'll happily compensate any helper for their time because lenovo quotes astronomical prices to change screens after warranty.
If you can, please point me in the right direction i'll be very grateful. Thanks.