Got a laptop with RTL8821CE WiFi adapter. When running MA, adapter is detected and Internet connection works perfectly. However, after installing KDE Minimal (with 5.4 LTS kernel), adapter is not found in OS.
No big deal, I know this adapter usually needs additional drivers (available in AUR), but here's the problem - networking is not available at all. I have 2 more laptops using the same WiFi adapter, and my solution was always to connect Android phone via USB, enable USB tethering (so Manjaro detects new "wired" connection) and download Realtek drivers.
Not this time. It looks network support is completely not available - when I connect Android phone, Manjaro doesn't detect wired connection. I know USB works because other operations (charging, file copy, etc.) work fine. The worst part is that this particular laptop has no LAN port, so I can't just connect some cable to download drivers.
Tried 2 times, got the same result. Since Internet works during installation, I have 2 guesses:
- The issue is caused because I install KDE Minimal. However, I also installed KDE Minimal on other machines and both wired/wireless adapters worked fine. But these machines had LAN ports, and this one doesn't, so maybe Minimal installation doesn't install any networking packages at all? Should I go with Full?
- It's because of kernel. I guess MA 20.0.2 is initialized with 5.6 kernel, isn't it? But I choose kernel 5.4 during setup. Maybe that's the problem?
I understand a possible solution is to download drivers using other machine, copy them to USB stick, and install manually. But I'm wondering if someone else had similar issues and found the exact cause of this.