Arch Linux

lenovolobo933

Member

Registered: 2018-12-12

Posts: 60

[SOLVED]how to modprobe rtl8821ce driver in LTS kernel?

after installing the driver i did

 
sudo modprobe -a rtl8821ce

but got the following error:

 
modprobe: WARNING: Module rtl8821ce not found in directory /lib/modules/5.4.80-2-lts

what should i do next? thanks

Last edited by lenovolobo933 (2020-12-05 13:08:51)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,361

Re: [SOLVED]how to modprobe rtl8821ce driver in LTS kernel?

How did you  install the driver? You need to rebuild it every time the kernel updates or changes, which is easiest done by setting up the DKMS version https://aur.archlinux.org/packages/rtl8821ce-dkms-git/ together with the headers for the kernels you intend to be using.

teckk

Member

Registered: 2013-02-21

Posts: 589

Re: [SOLVED]how to modprobe rtl8821ce driver in LTS kernel?

after installing the driver i did

You installed it how? From where?

One of these?
https://aur.archlinux.org/packages/rtl8821ce-dkms-git/
https://aur.archlinux.org/packages/rtl8821ce-dkms/
https://aur.archlinux.org/packages/rtl8821ce-dkms-lts/

And why did you install it? Output of:

lspci -k

Also what kernel

uname -a

https://bbs.archlinux.org/viewtopic.php?id=259945

lenovolobo933

Member

Registered: 2018-12-12

Posts: 60

Re: [SOLVED]how to modprobe rtl8821ce driver in LTS kernel?

i must have omitted to install linux-lts-headers the first time. reinstalling it fixed the issue.

however, there seems to be 2 instances of the wifi driver running as i see 2 notifications of IWD connecting to the wifi hotspot upon logging in

it maybe connected to the r110 and r115 versions of the rtl8821ce drivers being installed by dkms. i tried to remove 1 of them but did not succeed.

is it possible iwd is loading both versions of the driver? and how to remove the duplicate entry?

thanks

lenovolobo933

Member

Registered: 2018-12-12

Posts: 60

Re: [SOLVED]how to modprobe rtl8821ce driver in LTS kernel?

https://aur.archlinux.org/packages/rtl8821ce-dkms-git/
https://aur.archlinux.org/packages/rtl8821ce-dkms/

these 2 packages

lspci -k
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Root Complex
        Subsystem: Lenovo Device 3812
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) I/O Memory Management Unit
        Subsystem: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) I/O Memory Management Unit
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Stoney [Radeon R2/R3/R4/R5 Graphics] (rev da)
        Subsystem: Lenovo Device 39f3
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 15b3
        Subsystem: Lenovo Device 380b
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Host Bridge
00:02.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Root Port
        Kernel driver in use: pcieport
00:02.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Root Port
        Kernel driver in use: pcieport
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Host Bridge
00:08.0 Encryption controller: Advanced Micro Devices, Inc. [AMD] Carrizo Platform Security Processor
        Subsystem: Lenovo Device 3810
00:09.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Carrizo Audio Dummy Host Bridge
00:09.2 Audio device: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Audio Controller
        Subsystem: Lenovo Device 3811
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel
00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller (rev 20)
        Subsystem: Lenovo Device 380c
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 4b)
        Subsystem: Lenovo Device 380a
        Kernel driver in use: ahci
        Kernel modules: ahci
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 49)
        Subsystem: Lenovo Device 380d
        Kernel driver in use: ehci-pci
        Kernel modules: ehci_pci
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 4b)
        Subsystem: Lenovo Device 3816
        Kernel modules: i2c_piix4, sp5100_tco
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
        Subsystem: Lenovo Device 3818
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Stoney HT Configuration
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Stoney Address Maps
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Stoney DRAM Configuration
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Stoney Miscellaneous Configuration
        Kernel driver in use: k10temp
        Kernel modules: k10temp
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Stoney PM Configuration
        Kernel driver in use: fam15h_power
        Kernel modules: fam15h_power
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Stoney NB Performance Monitor
01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter
        Subsystem: Lenovo Device c024
        Kernel driver in use: rtl8821ce
        Kernel modules: 8821ce
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller (rev 07)
        Subsystem: Lenovo Device 3861
        Kernel driver in use: r8169
        Kernel modules: r8169

uname -a
Linux lenovo 5.4.80-2-lts #1 SMP Sat, 28 Nov 2020 15:11:01 +0000 x86_64 GNU/Linux