2 of 4 cameras missing (esp. front facing) maybe changed HW? how to further debug?

[Xnyle]

Not sure if this is a CFW or kernel issue, but I have to start somewhere and as there is no response on xda forums:

My device is a global 6,128 variant with flashed begonia CFW and PE on top.
My front facing camera isn't working and only 2 of 3 rear facing cameras are being detected.
I first thought there is something wrong with the camera apps but it seems my front facing camera simply isn't been detected by the os/fw.

Installed AIDA64 and it only lists two read-facing cameras. Using OpenCamera i was able to figure out that the top rear and ofc front facing camera are not accessible.

Also tried to find infos about actual hardware ids from /proc or /sys but couldn't figure out where that info actually is.

Also tried fiddling around with i2cdetect but no clue what to do with the output.

How can I get more infos via adb (about the actual hardware ids / i2c devices) (that probably don't have kernel support, so no drivers loaded for them)

[Xnyle]

See also https://forum.xda-developers.com/showpost.php?p=83404731&postcount=370 any kind of reaction would be appreciated.

I consider this to be a serious problem now.