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sleeper12

Glad that helped. Edit your first post & add [SOLVED] to the Subject line.

sleeper12

Are you sure power management is off? Post:

iwconfig

sleeper12

My guess would be that it did install on your first attempt, but maybe you didn't reboot after? You must reboot after installing a new kernel. Until you do, you are still on the old kernel.

sleeper12

I've never used any VM, but I think you need to install that wifi driver. One command at a time, hit Enter after each one, then reboot.

sleeper12

I'm not familiar enough with VirtualBox to help. But, you don't have to reboot after each of those commands. Just run one at a time, then reboot. And yes, you do need an internet connection to do it.

sleeper12

Turn power management off:

Code: Select all

sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

Reboot

sleeper12

If no better, do one line at a time:

Code: Select all

sudo apt install git dkms
git clone https://github.com/cilynx/rtl88x2bu.git
sudo dkms add ./rtl88x2bu
sudo dkms install rtl88x2bu/5.8.7.1

Reboot

sleeper12

Try it with power management off:

Code: Select all

sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

Reboot

sleeper12

With the adapter plugged in, post what this shows:

Code: Select all

inxi -Fxxxrz ; rfkill list ; iwconfig ; mokutil --sb-state

sleeper12

I don't know if a usb wifi adapter will solve the problem, but I did answer:

As for a usb wifi adapter, you would want one that says it works in linux & is preferably plug & play (no need to install a driver).

sleeper12

Meanwhile, someone else might see something that I don't.

sleeper12

My only guess is maybe the 6.8 kernel is not the best choice for that machine. Try a live session of a lower Mint version with the 5.15 kernel.

sleeper12

I don't see an obvious cause for the problem. Did wifi work in a live session from your install media?

sleeper12

Post what this shows:

Code: Select all

inxi -Fxxxrz ; rfkill list ; iwconfig ; mokutil --sb-state

sleeper12

You can try shut down, remove power cord & battery (if possible), press and hold power button for 30 seconds, then reconnect & boot. See if PM is off now (set to 2).

sleeper12

There is another driver you can try, #7 here: https://easylinuxtipsproject.blogspot.c ... k.html#ID7

sleeper12

What does this show now:

Code: Select all

inxi -Nn

Previously, it showed:

Network:
Device-1: Realtek RTL8822BE 802.11a/b/g/n/ac WiFi adapter
vendor: Lenovo ThinkPad E595 driver: N/A pcie: speed: Unknown lanes: 63
port: 4000 bus-ID: 07:00.0 chip-ID: 10ec:b822 class-ID: 0280

sleeper12

Have you tried restarting your router? Someone here had a similar problem & it turned out to be a router setting: https://forums.linuxmint.com/viewtopic.php?p=1965702#p1965702 As for a usb wifi adapter, you would want one that says it works in linux & is preferably plug & play (no need t...

sleeper12

Change it to 3:

Code: Select all

sudo sed -i 's/2/3/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

Reboot

If still on, go back to 2:

Code: Select all

sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

Reboot

If still on after that, I'm stumped.

sleeper12

Try:

Code: Select all

sudo apt remove broadcom-sta-dkms

Reboot

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