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.
The future appears to be RHEL or Debian. I think I'm going Debian.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, 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.
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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.
The future appears to be RHEL or Debian. I think I'm going Debian.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke

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