After much googling I found out that EDID data can be rewritten under Linux to that of Lenovo version of the same panel. Trouble is I am not able to find the EDID chip on any i2C buses.
This is using Ubunutu 20.04 live image,
get-edid scans all buses and finds no EDID at all
i2cdetect sees i915 gmbus panel on I2c-3 bus
edid-rw does not see the chip there
Any idea why none of tehse tools can see the panel? Somehow in windows under moninfo I can get most of what's in it
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Or am i chasing the wrong issue and something else makes windows 10 confused with this?
They use an Aux channel of eDP to send all this data. So the EDID eeprom is still there but is accessed differently.
I suppose reflashing it directly might be an option.
See http://www.vesa.org/wp-content/uploads ... 10-v3.pdf pages 8 and 10
I might put my old B140HAN01.2 up for sale- it's not configured for Lenovo but when it does get detected it works fine. Might be power management thing as I've had it on for a few months by keeping laptop on AC power and off sleep mode.
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