CentOS 7.6-1810 Desktop can not find Wi-Fi adapter on HP 14-ck0023tu

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cosnk
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CentOS 7.6-1810 Desktop can not find Wi-Fi adapter on HP 14-ck0023tu

Post by cosnk » 2019/02/16 04:06:03

I have already installed CentOS 7.6-1810 Desktop in dual mode with pre-installed Windows 10 Home 64 bit on my brand-new notebook namely HP 14-ck0023tu.
Bluetooth is ok but CentOS can't find Wi-Fi adpter.
Can you please help?
:roll:

tunk
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Re: CentOS 7.6-1810 Desktop can not find Wi-Fi adapter on HP 14-ck0023tu

Post by tunk » 2019/02/16 12:37:57

Does the output of lspci or lsusb show your adapter?
Then do a web search to see if it's supported by linux.

cosnk
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Re: CentOS 7.6-1810 Desktop can not find Wi-Fi adapter on HP 14-ck0023tu

Post by cosnk » 2019/02/17 07:58:09

tunk wrote:
2019/02/16 12:37:57
Does the output of lspci or lsusb show your adapter?
Then do a web search to see if it's supported by linux.
The result is
'Network Controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11 ac PCIe Wireless Network Adapter'.
It told me to use driver from Fedora, Ubuntu, etc.

Can you please help me to move forward step by step?

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TrevorH
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Re: CentOS 7.6-1810 Desktop can not find Wi-Fi adapter on HP 14-ck0023tu

Post by TrevorH » 2019/02/17 15:35:23

Please use lspci -nn not lspci. It shows us the exact model of card that way.
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

cosnk
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Re: CentOS 7.6-1810 Desktop can not find Wi-Fi adapter on HP 14-ck0023tu

Post by cosnk » 2019/02/17 17:20:06

TrevorH wrote:
2019/02/17 15:35:23
Please use lspci -nn not lspci. It shows us the exact model of card that way.
New result:
'Network controller [0280] : Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]'.

Thank you so much in advance.

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toracat
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Re: CentOS 7.6-1810 Desktop can not find Wi-Fi adapter on HP 14-ck0023tu

Post by toracat » 2019/02/17 18:24:25

Unfortunately I don't see a Linux driver for the device [10ec:c821] in kernel or provided by Realtek.
CentOS Forum FAQ

cosnk
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Re: CentOS 7.6-1810 Desktop can not find Wi-Fi adapter on HP 14-ck0023tu

Post by cosnk » 2019/02/18 00:55:48

In Realtek's webpage, there is only driver for Windows released since 2017. May I say that every Linux distros can't use this NIC namely [10ec:c821]?

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Re: CentOS 7.6-1810 Desktop can not find Wi-Fi adapter on HP 14-ck0023tu

Post by toracat » 2019/02/18 01:28:58

A couple of people wrote the driver for RTL8821CE:

https://github.com/endlessm/linux/tree/ ... /rtl8821ce
and
https://github.com/tomaspinho/rtl8821ce

If either can be built for CentOS-7, that would be the only way to get the device to work.
CentOS Forum FAQ

cosnk
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Re: CentOS 7.6-1810 Desktop can not find Wi-Fi adapter on HP 14-ck0023tu

Post by cosnk » 2019/02/18 05:23:56

toracat wrote:
2019/02/18 01:28:58
If either can be built for CentOS-7, that would be the only way to get the device to work.
How can we ask for help from those 2 developers to make it for CentOS ?

Someone using Fedora succeeded:
https://forums.fedoraforum.org/showthre ... &p=1816017

Can you please help demonstrating step by step ?

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Re: CentOS 7.6-1810 Desktop can not find Wi-Fi adapter on HP 14-ck0023tu

Post by toracat » 2019/02/18 18:36:02

That Fedora "solution" is using the code from the first github link in my post. I doubt it will build on CentOS-7.

I strongly recommend that you buy an inexpensive wireless adapter that works out of the box under CentOS-7. You may want to read this post by ELRepo's developer, Phil Perry. It explains why that is the only practical choice.
CentOS Forum FAQ

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