CentOS

Hello all,

A new bee to CentOS, I just installed CentOS 8.1 on Thinkpad E14. For some reasons I am unable to internet via WiFi.
WiFi option shows No WiFi adapter found Make sure you have a Wi-Fi plugged and turned on.

Using dnf search wireless, installed driver related packages, but no luck in connecting to internet via WiFi.
Options that I have tried are below.

Please help to fix this issue, suggestions, ideas are much appreciated.

[root@localhost ~]# dnf search wireless
Last metadata expiration check: 0:00:19 ago on Saturday 06 June 2020 07:57:49 PM IST.
======================================================================== Summary Matched: wireless =========================================================================
iw.x86_64 : A nl80211 based wireless configuration tool
iw.x86_64 : A nl80211 based wireless configuration tool
iwl6000-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 6000 AGN Adapter
iwl6000-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 6000 AGN Adapter
crda.noarch : Regulatory compliance daemon for 802.11 wireless networking
crda.noarch : Regulatory compliance daemon for 802.11 wireless networking
iwl100-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 100 Series Adapters
iwl1000-firmware.noarch : Firmware for Intel® PRO/Wireless 1000 B/G/N network adaptors
iwl3945-firmware.noarch : Firmware for Intel® PRO/Wireless 3945 A/B/G network adaptors
iwl4965-firmware.noarch : Firmware for Intel® PRO/Wireless 4965 A/G/N network adaptors
iwl5000-firmware.noarch : Firmware for Intel® PRO/Wireless 5000 A/G/N network adaptors
iwl5150-firmware.noarch : Firmware for Intel® PRO/Wireless 5150 A/G/N network adaptors
iwl100-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 100 Series Adapters
iwl1000-firmware.noarch : Firmware for Intel® PRO/Wireless 1000 B/G/N network adaptors
iwl3945-firmware.noarch : Firmware for Intel® PRO/Wireless 3945 A/B/G network adaptors
iwl4965-firmware.noarch : Firmware for Intel® PRO/Wireless 4965 A/G/N network adaptors
iwl5000-firmware.noarch : Firmware for Intel® PRO/Wireless 5000 A/G/N network adaptors
iwl5150-firmware.noarch : Firmware for Intel® PRO/Wireless 5150 A/G/N network adaptors
iwl105-firmware.noarch : Firmware for Intel(R) Centrino Wireless-N 105 Series Adapters
iwl135-firmware.noarch : Firmware for Intel(R) Centrino Wireless-N 135 Series Adapters
iwl3160-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 3160 Series Adapters
iwl6000g2a-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 6005 Series Adapters
iwl6000g2b-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 6030 Series Adapters
iwl6050-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 6050 Series Adapters
iwl105-firmware.noarch : Firmware for Intel(R) Centrino Wireless-N 105 Series Adapters
iwl135-firmware.noarch : Firmware for Intel(R) Centrino Wireless-N 135 Series Adapters
iwl3160-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 3160 Series Adapters
iwl6000g2a-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 6005 Series Adapters
iwl6000g2b-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 6030 Series Adapters
iwl6050-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 6050 Series Adapters
iwl2000-firmware.noarch : Firmware for Intel(R) Centrino Wireless-N 2000 Series Adapters
iwl2030-firmware.noarch : Firmware for Intel(R) Centrino Wireless-N 2030 Series Adapters
iwl2000-firmware.noarch : Firmware for Intel(R) Centrino Wireless-N 2000 Series Adapters
iwl2030-firmware.noarch : Firmware for Intel(R) Centrino Wireless-N 2030 Series Adapters
iwl7260-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 726x/8000/9000 Series Adapters
iwl7260-firmware.noarch : Firmware for Intel(R) Wireless WiFi Link 726x/8000/9000 Series Adapters

[root@localhost ~]# dnf install iwl6000-firmware.noarch
Last metadata expiration check: 0:00:51 ago on Saturday 06 June 2020 07:57:49 PM IST.
Package iwl6000-firmware-9.221.4.1-94.el8.1.noarch is already installed.
Dependencies resolved.
Nothing to do.
Complete!

[root@localhost ~]# nmcli device
DEVICE TYPE STATE CONNECTION
enp0s20f0u3 ethernet connected OnePlus
virbr0 bridge connected virbr0
enp4s0 ethernet disconnected --
lo loopback unmanaged --
virbr0-nic tun unmanaged --

WiFi Hardware information
Device name Device name in the Device Manager
-------------------- ---------------------------------
Intel(R) Wi-Fi 6 AX201 Intel(R) Wi-Fi 6 AX201
Intel(R) Wireless-AC 9560 Intel(R) Wireless-AC 9560


Thank you
Madhu

Post the output from lspci -nn | grep -i net

Thank you and here is the output
[root@localhost opt]# lspci -nn | grep -i net
00:14.3 Network controller [0280]: Intel Corporation Device [8086:02f0]
04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
[root@localhost opt]#

So, as far as I can tell, that adapter ought to be supported by the CentOS 8.1 kernel as you can see by running grep -i 8086 /lib/modules/$(uname -r)/modules.* | grep -i 02f0. If you run lsmod | grep -i iwlwifi do you get results? How about the output from dmesg | grep -i iwl ?

Thank you for your time and suggestions.

Here is the output & tried contacting Lenovo for drivers support to give a try but no luck as currently it is limited to Windows.

[root@localhost ~]# lsmod | grep -i iwlwifi
iwlwifi 286720 0
cfg80211 794624 1 iwlwifi
[root@localhost ~]# dmesg | grep -i iwl
[ 5.085821] iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)
[ 5.098936] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-Qu-b0-hr-b0-48.ucode failed with error -2
[ 5.098961] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-Qu-b0-hr-b0-47.ucode failed with error -2
[ 5.098973] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-Qu-b0-hr-b0-46.ucode failed with error -2
[ 5.098984] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-Qu-b0-hr-b0-45.ucode failed with error -2
[ 5.098995] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-Qu-b0-hr-b0-44.ucode failed with error -2
[ 5.099010] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-Qu-b0-hr-b0-43.ucode failed with error -2
[ 5.099021] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-Qu-b0-hr-b0-42.ucode failed with error -2
[ 5.099032] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-Qu-b0-hr-b0-41.ucode failed with error -2
[ 5.099044] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-Qu-b0-hr-b0-40.ucode failed with error -2
[ 5.099054] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-Qu-b0-hr-b0-39.ucode failed with error -2
[ 5.099056] iwlwifi 0000:00:14.3: no suitable firmware found!
[ 5.099089] iwlwifi 0000:00:14.3: minimum version required: iwlwifi-Qu-b0-hr-b0-39
[ 5.099123] iwlwifi 0000:00:14.3: maximum version supported: iwlwifi-Qu-b0-hr-b0-48
[ 5.099157] iwlwifi 0000:00:14.3: check git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
[root@localhost ~]#

would wish to try [ 5.099157] iwlwifi 0000:00:14.3: check git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git but bit worried i might mess with kernel.

- Madhu