Wifi adapter not found

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Jajalefoudingo
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Joined: 2022/09/23 09:44:26

Wifi adapter not found

Post by Jajalefoudingo » 2022/09/23 10:16:36

Hello,

I'm a beginner on Linux and CentOS and sorry for my approximation with english, it s not my mother tongue.
I already found a lot of forum talking about this matter, but it could'nt help me.
I can't connect my wifi on my centOS 7 ....
I have this message "wifi adapter not found" on my configuration board.
nmtui don't find any wifi connection.
  • [romain.jarrige@localhost ~]$ lspci -nn
    00:00.0 Host bridge [0600]: Intel Corporation Gemini Lake Host Bridge [8086:31f0] (rev 03)
    00:00.1 Signal processing controller [1180]: Intel Corporation Celeron/Pentium Silver Processor Dynamic Platform and Thermal Framework Processor Participant [8086:318c] (rev 03)
    00:00.3 System peripheral [0880]: Intel Corporation Device [8086:3190] (rev 03)
    00:02.0 VGA compatible controller [0300]: Intel Corporation UHD Graphics 605 [8086:3185] (rev 03)
    00:0e.0 Audio device [0403]: Intel Corporation Celeron/Pentium Silver Processor High Definition Audio [8086:3198] (rev 03)
    00:0f.0 Communication controller [0780]: Intel Corporation Celeron/Pentium Silver Processor Trusted Execution Engine Interface [8086:319a] (rev 03)
    00:12.0 SATA controller [0106]: Intel Corporation Device [8086:31e3] (rev 03)
    00:14.0 PCI bridge [0604]: Intel Corporation Gemini Lake PCI Express Root Port [8086:31d6] (rev f3)
    00:14.1 PCI bridge [0604]: Intel Corporation Gemini Lake PCI Express Root Port [8086:31d7] (rev f3)
    00:15.0 USB controller [0c03]: Intel Corporation Device [8086:31a8] (rev 03)
    00:17.0 Signal processing controller [1180]: Intel Corporation Device [8086:31b4] (rev 03)
    00:17.1 Signal processing controller [1180]: Intel Corporation Device [8086:31b6] (rev 03)
    00:1f.0 ISA bridge [0601]: Intel Corporation Device [8086:31e8] (rev 03)
    00:1f.1 SMBus [0c05]: Intel Corporation Celeron/Pentium Silver Processor Gaussian Mixture Model [8086:31d4] (rev 03)
    01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
    02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
Could anyone help me please?

Romain

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TrevorH
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Re: Wifi adapter not found

Post by TrevorH » 2022/09/23 11:14:51

02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
There does not appear to be a driver for this card included in the distro kernel. Nor can I see a kmod package in the ELRepo third party yum repo that would help. If you can get it supported at all then I think it will be by installing the ELRepo 'kernel-ml' package and hoping that that has a driver included for it. You'll need to `yum install elrepo-release` then `yum --enablerepo=elrepo-kernel install kernel-ml` and then reboot into the new kernel by selecting it from the grub menu at boot time. If it works then you should probably enable the elrepo-kernel repo permanently so that you receive updated packages as they are released.
CentOS 8 died a premature death at the end of 2021 - migrate to Rocky/Alma/OEL/Springdale ASAP.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are dead, do not use them.
Use the FAQ Luke

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toracat
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Re: Wifi adapter not found

Post by toracat » 2022/09/24 09:49:58

TrevorH wrote:
2022/09/23 11:14:51
If it works then you should probably enable the elrepo-kernel repo permanently so that you receive updated packages as they are released.
Either that or ask ELRepo to provide a kmod package for the driver.
CentOS Forum FAQ

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TrevorH
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Re: Wifi adapter not found

Post by TrevorH » 2022/09/24 12:01:56

I got the idea that it had already been requested as there are lots of previous forum posts for the same device. I'm guessing it was too difficult to build.
CentOS 8 died a premature death at the end of 2021 - migrate to Rocky/Alma/OEL/Springdale ASAP.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are dead, do not use them.
Use the FAQ Luke

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