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<SOLVED> Lenovo 330 with RTL8821CE 802.11ac wifi adapter - kernel update breaks wifi

Posted: Tue Mar 10, 2020 11:55 am
by Wolfpeach
Greetings!

I previously had issues with getting wifi to work on a Lenovo Ideapad 330, and was helped with the info in this thread:

viewtopic.php?t=276656

This worked, and every so often a kernel update would break the wifi, at which point I would reinstall the driver like so:

make
sudo make install
sudo modprobe 8821ce


However, after the kernel update following 4.15.0-62, this work-around no longer works. Since then I've been booting into the old kernel (4.15.0-62), which is the most recent version in which the wifi does still work. I'd like to get this fixed, however, and was wondering if anyone could advise?

My system stats are as follows:

System: Host: 330 Kernel: 4.15.0-62-generic x86_64 bits: 64 gcc: 7.4.0
Desktop: MATE 1.20.1 (Gtk 3.22.30-1ubuntu4) dm: lightdm
Distro: Linux Mint 19 Tara
Machine: Device: laptop System: LENOVO product: 81D6 v: Lenovo ideapad 330-15AST serial: N/A
Mobo: LENOVO model: LNVNB161216 v: SDK0J40700WIN serial: N/A
UEFI: LENOVO v: 8UCN06WW date: 04/10/2018
Chassis: type: 10 v: Lenovo ideapad 330-15AST serial: N/A
Network: Card-1: Realtek RTL8821CE 802.11ac PCIe Wireless Network Adapter
driver: rtl8821ce port: 2000 bus-ID: 01:00.0 chip-ID: 10ec:c821
IF: wlp1s0 state: up mac: <filter>
Card-2: Realtek RTL810xE PCIE Fast Ethernet controller
driver: r8169 v: 2.3LK-NAPI port: 1000
bus-ID: 02:00.0 chip-ID: 10ec:8136
IF: enp2s0 state: down mac: <filter>

Re: Lenovo 330 with RTL8821CE 802.11ac wifi adapter - kernel update breaks wifi

Posted: Tue Mar 10, 2020 11:59 am
by Pjotr
There's a DKMS package in the repo's now, so try this:
https://easylinuxtipsproject.blogspot.c ... .html#ID10
(item 10)

Afterwards, reboot with the latest kernel of the 4.15 series.

Re: Lenovo 330 with RTL8821CE 802.11ac wifi adapter - kernel update breaks wifi

Posted: Tue Mar 10, 2020 1:12 pm
by Wolfpeach
[edited] OK, its working now! That worked perfectly, thank you so much!

(there was another, totally unrelated issue with the router settings being toggled from 2.4ghz to 5ghz that made the difference, but I can now boot into the more recent kernel and the wifi works - sweet.)