[UPDATE]
I checked that chip again, I am almost certain that it is a Texas Instruments HD3SS460 4 x 6 Channels USB Type-C™ Alternate Mode MUX, the official document is here:
http://www.ti.com/lit/ds/symlink/hd3ss460.pdf
Does this "USB CHIP" envolve i2c touchscreen?
[ORIGINAL CONTENT]
hello guys!
Sorry for my poor English first, I hope you can understand what I am talking about.
I'm trying to modify my LG GRAM 15Z980, replace its non-touchscreen to a touchscreen which is from touchscreen edition of the same Z980 series.
The screen panel can display normally, but the touch function doesn't work. I get an HID I2C error, code 10, in WINDOWS DEVICE MANAGER.
I have tried all software method to fix it like installing fresh windows and update drivers, but they never work.
Then I notice there are some differences on the PCB near the EDP video interface, I can see 2 different components on non-touchscreen edition PCB and touchscreen edition PCB.
I'm not sure if these hardware difference cause the problem or not. I also guess maybe the hidden option in bios lock the touch function.
There is no information online for LG GRAM, it's really not popular like macbook or thinkpad.
I have uploaded pics in attachments. And bios file is here: https://mega.nz/#!UwJT2QQA!U7PWAU7KFiPds7db-41o8NzqhF4yQxNyiLMTr8unOis
Can anybody help me fix the touchscreen problem?
Thank you so much!
touchscreen edition pcb:
non-touchscreen edition pcb:
non-touchscreen edition pcb back:
TigerBest changed their profile photo
