Author Topic: Wifi won´t work after update - firewall problem (SOLVED)  (Read 1477 times)

Offline mefibo

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Wifi won´t work after update - firewall problem (SOLVED)
« on: January 28, 2020, 05:06:03 am »
After a update a few weeks ago - including a kernel-update - the following strange thing occurs. The wifi-connection is established. But no page will load; nor can I get updates. When I switch the firewall on and off a few times, the connection becomes normal and pages load. I have made no changes at all before this; the firewall was even switched off.
Looking around on the forum I´ve seen a possible solution is to remove advert blocker and delete hosts-file in /etc. There are the following files: hosts, hosts.allow and hosts.deny. Should I remove them all?
Booting a previous kernel did not solve the problem; nor changing the IPv6 settings.
Here are the requested outputs, made before establishing the connection:

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« Last Edit: February 08, 2020, 07:18:28 am by mefibo »

Offline Howling Wolf

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Re: Wifi won´t work after update - firewall problem
« Reply #1 on: January 30, 2020, 09:10:39 am »
What kind of problem lead to kernel update? Maybe you don't need it. If it happened automatically, at the start you can choose an earlier kernel version. If it does the trick, you can stick to that kernel version, no need to go ahead.

Offline mefibo

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Re: Wifi won´t work after update - firewall problem
« Reply #2 on: January 31, 2020, 02:13:17 am »
The update was automatically. As mentioned in my first post, booting a earlier kernel did not work. I booted ¨back¨ till 5.0.0.36.

Offline Howling Wolf

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Re: Wifi won´t work after update - firewall problem
« Reply #3 on: January 31, 2020, 02:45:28 am »
Sorry for misreading.

My hosts file after clean install (in VirtualBox) contains:

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Nothing else. IMHO it worth a try to switch off the advert blocker and delete the rest lines. They will be populated again when you switch it on again. Don't forget to make backup, say,  hosts.ORIG !

Offline mefibo

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Re: Wifi won´t work after update - firewall problem
« Reply #4 on: January 31, 2020, 05:09:02 am »
The hosts-file is the same:

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Removing Advert-Blocker did not solve the problem, unfortunately.

Ouput from inxi -Fz:

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« Last Edit: January 31, 2020, 05:19:36 am by mefibo »

Offline mefibo

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Re: Wifi won´t work after update - firewall problem
« Reply #5 on: February 04, 2020, 07:32:03 am »
Generally, at startup the firewall is inactive; when I switch to active the connection is established. Is there a way to activate the firewall automatically while booting?

Offline alynur

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Re: Wifi won´t work after update - firewall problem
« Reply #6 on: February 04, 2020, 06:26:58 pm »
Hi mefibo, I don't use a firewall so not sure how much help this might be, have you tried right clicking on Firewall configuration and clicking on Options  Use startup notification?   :-\
What was I thinking?

Offline mefibo

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Re: Wifi won´t work after update - firewall problem
« Reply #7 on: February 05, 2020, 04:34:06 am »
Hi alynur, unfortunately that did not help. I´ve removed the firewall from the system then I don´t have a connection at all. Re-installed it with a usb-stick. Nothing changed, but I can connect by switching to active.

Offline Howling Wolf

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Re: Wifi won´t work after update - firewall problem
« Reply #8 on: February 05, 2020, 02:46:11 pm »
Hi, do you mean that without an active firewall it is all OK? Am I right? If not, maybe this helps: one of my computers is an old ASUS K50IJ Notebook and this one cannot connect to WiFi above 4.18.0-21 kernel, so I had to stick to that version.
Another test: if you try to run a live media with a clean PepperMint Ten, does it works or not?
Cheerz

Offline mefibo

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Re: Wifi won´t work after update - firewall problem
« Reply #9 on: February 06, 2020, 06:00:50 am »
Hi, Just the opposite; with no firewall I can´t get a working connection. Hence I had to reinstall via usb-stick. I have to change the firewall settings from off to on to establish a working WiFi-connection. I´ve booted several previous kernels; did not work. I have not tried a fresh Peppermint 10 yet due to specific hardware-problems handled in ¨New Users¨. But I will try a new Live USB one of these days.
For what it´s worth; I was at the 5.0.0.x kernel. The problem manifested after a update to the 5.3.0.xx. But however; when I boot a previous kernel now it does not solve the problem.

Offline Howling Wolf

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Re: Wifi won´t work after update - firewall problem
« Reply #10 on: February 06, 2020, 08:52:18 am »
Sorry m8, no more idea... Before try from live media, at least give a chance to 4.18.0-21  kernel... Just for curiosity...

Offline mefibo

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Re: Wifi won´t work after update - firewall problem
« Reply #11 on: February 07, 2020, 03:38:31 am »
Hi, for your curiosity I´ve tried the 4.18.0.25 kernel; the...21 kernel is not available on my system. Did not work. So I think it´s save to say the kernel version is not the problem. What is, I have really no idea. I hope someone has.

uname -a gives:

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mefibo@mefibo-HP-Stream-Notebook-PC-11 ~ $ uname -a
Linux mefibo-HP-Stream-Notebook-PC-11 5.3.0-28-generic #30~18.04.1-Ubuntu SMP Fri Jan 17 06:14:09 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

Offline Howling Wolf

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Re: Wifi won´t work after update - firewall problem
« Reply #12 on: February 07, 2020, 06:45:41 am »
OK I guess it but the last chance is to try a clean live media. If it prevail then you can
trace the problem by comparing suspicious files both your os / live os
make a clean install - reinstall and do not forget to make some kinda of saves before any upgrading - fsarchiver, timehift and so on.
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Offline mefibo

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Re: Wifi won´t work after update - firewall problem
« Reply #13 on: February 07, 2020, 07:56:37 am »
I have tried the latest P10 Live distro; everything works. The wifi-connection as well as bluetooth (I had specific problems with that).
So I would like to try upgrading from P9 to P10 rather than perform a clean install of P10 in order to save installed programs and my wifi printer. Is that possible?
« Last Edit: February 07, 2020, 08:03:08 am by mefibo »

Offline jlschwartz

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Re: Wifi won´t work after update - firewall problem
« Reply #14 on: February 07, 2020, 08:36:59 am »
Sorry, but that's not possible.  You must do a full install.