RTL8821CE only works without issues in kernel 5.10 or below

Please read this:

Especially the Linux has multiple kernels section, then stay on 5.10 but now you know why you should. :grin:

If you insist on getting a developer to look at it, please read the section What’s this Upstream / Downstream business? in the same tutorial and then file a bug upstream

Please note that:

Closing words

Compared with other Free/Libre & Open Source Software it’s hard to report issues to the Linux kernel developers: the length and complexity of this document and the implications between the lines illustrate that. But that’s how it is for now. The main author of this text hopes documenting the state of the art will lay some groundwork to improve the situation over time.

:crossed_fingers: