Comment # 3 on bug 1177250 from Takashi Iwai

As Stephan suggested, please try to remove all existing 8812au-kmp packages
once, and install the latest one.  Otherwise it can be too messy, the symbol
version mismatch might come from the attempt with the very old KMP.

What's new on Leap 15.2 is that you can't load the "unofficial" module in
Secure Boot mode.  The insmod error may show that, and if that's the case, you
can see the relevant error message in kernel log.