[SOLVED] Realtek Wifi-adapter crashes whole system under Ubuntu 16.04

kkoistinen · 02-27-2017, 05:34 AM

Hello everyone,

I am running Ubuntu 16.04 Finnish language. The problem is that I have Realtek USB wifi-adapter and for some reason Ubuntu crashes totally when I connect it to the computer. I have managed to set up wifi after Ubuntu reinstall and everything runs smoothly until today when problems came back as I turned the computer on. I have tried other USB adapter but the problem persists. Latest update activity is as follows:

Start-Date: 2017-02-26 21:58:14
Commandline: /usr/bin/unattended-upgrade
Install: linux-headers-4.8.0-39:amd64 (4.8.0-39.42~16.04.1, automatic), linux-image-4.8.0-39-generic:amd64 (4.8.0-39.42~16.04.1, automatic), linux-image-extra-4.8.0-39-generic:amd64 (4.8.0-39.42~16.04.1, automatic), linux-headers-4.8.0-39-generic:amd64 (4.8.0-39.42~16.04.1, automatic)
Upgrade: linux-image-generic-hwe-16.04:amd64 (4.8.0.36.8, 4.8.0.39.10), linux-generic-hwe-16.04:amd64 (4.8.0.36.8, 4.8.0.39.10), linux-headers-generic-hwe-16.04:amd64 (4.8.0.36.8, 4.8.0.39.10)
End-Date: 2017-02-26 22:00:59

I tried to start Ubuntu recovery and start network from there. The following occurs few times before everything crashes:

/etc/resolv.conf missing

Ethernet cable works fine.

Kimmo

TheEzekielProject · 02-27-2017, 10:20 AM

So you need to regenerate your resolv.conf

Code:

sudo apt-get remove --purge resolvconf && sudo apt-get install resolvconf

then try again. Strange that it'd work wired and not wireless though

kkoistinen · 02-28-2017, 01:35 PM

The problem is now solved. After install Linux updated kernel which didn't support my rather old USB Wlan adapters. I talked about this in Finnish Linux forum. I was given instruction to start Linux under older kernel and that solved problem. Changing to older kernel can be done by pushing right shift button during start. So now I am waiting when this bug is fixed in new kernel version.

Kimmo