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My wifi connection is not working, LAN connection works normally. The Wifi GUI offers me Bluetooth settings, which I believe is a remainder of previously shared bluetooth internet connection (via my phone).

My laptop is Thinkpad E595 running Ubuntu 22.04.

Is there a way to try to reinstall wifi drivers? Does this seem to be a HW problem?

EDIT:

Wifi HW information:
Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTL8822BE 802.11a/b/g/n/ac WiFi adapter
    Subsystem: Lenovo ThinkPad E595
    Physical Slot: 0
    Flags: fast devsel, IRQ 255, IOMMU group 12
    I/O ports at 2000 [disabled] [size=256]
    Memory at d0700000 (64-bit, non-prefetchable) [disabled] [size=64K]
    Capabilities: <access denied>
    Kernel modules: rtw88_8822be

sudo dkms status

8812au/5.6.4.2_35491.20191025, 5.15.0-30-generic, x86_64: installed
backport-iwlwifi/9858, 5.15.0-30-generic, x86_64: installed
backport-iwlwifi/9858, 5.15.0-33-generic, x86_64: installed
bcmwl/6.30.223.271+bdcom, 5.15.0-30-generic, x86_64: installed
bcmwl/6.30.223.271+bdcom, 5.15.0-33-generic, x86_64: installed
rtlwifi-new/0.6, 5.15.0-33-generic, x86_64: installed

I have tried to install several drivers, so some should be removed?

I think that the main problem now is the unassigned class of the wifi HW? I have not found any way to repair that so far.

Faire
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    Remove the last line from the file. – nobody May 23 '22 at 07:24
  • @nobody I have removed the line, now modprobe iwlwifi && dmesg | grep iwlwifi returns dmesg: read kernel buffer failed: Operation not permitted. – Faire May 23 '22 at 08:17
  • Run sudo modprobe iwlwifi && sudo dmesg | grep iwlwifi – Pilot6 May 23 '22 at 10:50
  • But I can't see how iwlwifi is related. What is your wireless hardware? – Pilot6 May 23 '22 at 10:52
  • @Pilot6 Apparently RTL8822BE by Realtek. iwlwifi is only for Intel HW, right? How should I proceed then? – Faire May 23 '22 at 11:39
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    Search for an answer about RTL8822BE – Pilot6 May 23 '22 at 11:52
  • @Pilot6 I have tried that, nothing worked so far. Is there a way to check if the HW (wifi module) us working? Because sudo lshw -C network only returns the Ethernet, not the wifi module - because the RTL8822 has unassigned class, it also lists I/O ports as disabled. – Faire May 24 '22 at 06:32
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    You did a lot wrong things, it will be hard to advise. It is better to do a fresh install and get the correct driver. See https://askubuntu.com/a/1179178/167850 You installed all sorts of wrong drivers and probably did something else. – Pilot6 May 30 '22 at 06:41
  • @Pilot6 I thought so. Thanks for the feedback! – Faire May 30 '22 at 07:17

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first solution is to backup your system and do a fresh install. do not touch the driver files unless needing an update.

the 2nd solution is go Software & Updates > Additional Drivers > then your wifi driver.

you should use an ethernet connection to download the drivers.

Rishon_JR
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