3

my wifi card stopped working after reboot.

The package rtl8821ce-dkms is installed, why is wifi gone?

$ dpkg -l  | grep rtl88
ii  rtl8821ce-dkms                                5.5.2.1-0ubuntu4~20.04.2              all          DKMS source for the Realtek 8821C PCIe WiFi driver
$ sudo modprobe -a rtl8821ae 
$ sudo rfkill list all
0: hci0: Bluetooth
    Soft blocked: yes
    Hard blocked: no
$ sudo lshw -C network
  *-network UNGEFORDERT     
       Beschreibung: Network controller
       Produkt: RTL8821CE 802.11ac PCIe Wireless Network Adapter
       Hersteller: Realtek Semiconductor Co., Ltd.
       Physische ID: 0
       Bus-Informationen: pci@0000:02:00.0
       Version: 00
       Breite: 64 bits
       Takt: 33MHz
       Fähigkeiten: pm msi pciexpress cap_list
       Konfiguration: latency=0

dkms status
rtl8821ce, 5.5.2.1: added
virtualbox, 6.1.10, 5.4.0-59-generic, x86_64: installed
virtualbox, 6.1.10, 5.4.0-60-generic, x86_64: installed


uname -r 
5.8.0-36-generic
2IRN
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1 Answers1

4

I think I found a solution.

The problem was missing kernel header for 5.8. The package linux-image-generic-hwe-20.04 was installed, but linux-generic-hwe-20.04 was missing. Did not notice because no kernel 5.8 was installed before ...

After that sudo apt remove rtl8821ce-dkms && sudo apt install rtl8821ce-dkms restored wifi. (Thanks for your help! Pilot6)

dkms status
rtl8821ce, 5.5.2.1, 5.4.0-60-generic, x86_64: installed
rtl8821ce, 5.5.2.1, 5.8.0-36-generic, x86_64: installed
virtualbox, 6.1.10: added

Virtualbox kernel modules are still broken, but I think this is a general problem. Tried a complete purge and reinstall without success. :/ https://www.reddit.com/r/voidlinux/comments/ihnh51/linux58_building_dkms_module_virtualboxose6110/

2IRN
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