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rated 0 times [  2] [ 0]  / answers: 1 / hits: 646  / 2 Years ago, mon, april 18, 2022, 12:50:59

My problem seems to be very similar to that detailed at Ubuntu 22.04: RTL8821CE-based wifi not working but the fix there (removing backport-iwlwifi-dkms) did not work for me (I apparently do not have backport-iwlwifi-dkms on my computer).


I had run into an issue with this wifi card long (more than a year, I think) ago, and had resolved it, but I seem to be dead in the water again.


I am currently accessing the internet with an old usb dongle, which is not very good (no 5G).


Any computer savvy-ness I ever had is probably 30 years out of date, so please forgive my cluelessness.


Any help appreciated.


Output of lspci -knn | grep Net -A3; rfkill list :


03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
Subsystem: Hewlett-Packard Company RTL8821CE 802.11ac PCIe Wireless Network Adapter [103c:831a]
Kernel modules: rtw88_8821ce
04:00.0 Non-Volatile memory controller [0108]: SK hynix Gold P31 SSD [1c5c:174a]
Subsystem: SK hynix Gold P31 SSD [1c5c:174a]
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no

Kernal version is 5.19.0-32-generic


Output of grep rtw88_8821ce /etc/modprobe.d/* :


/etc/modprobe.d/blacklist.conf:blacklist rtw88_8821ce

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 Answers
1

You've blacklisted the rtw88_8821ce module when installing some other driver.


Now when kernel upgraded from 5.15 to 5.19 that driver installed from source didn't build.


You can remove that blacklist rtw88_8821ce from /etc/modprobe.d/blacklist.conf and run


sudo modprobe rtw88_8821ce

If you aren't satisfied with the in-tree module performance when considering to install some other driver, make sure it is compatible with the 5.19 kernel.


[#36] Tuesday, April 19, 2022, 2 Years  [reply] [flag answer]
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