Leap 15.5 possibly iwlwifi issue with WPA/WPA2 Enterprise

English Network/Internet
1

Hello, I installed 15.5 on a Lenovo Thinkpad with the Comet Lake PCH CNVi Wifi adaptor.
This works fine the WPA/WPA2 Personal connections, but does not with the Enterprise Wifi network points.
It initially connects to the wifi Enterprise point, but after a few seconds, the network manager icon shows a yellow “!” and a pop up error that says:

Limited Connectivity
The device appears to be connected to a network but is unable to reach the Internet"

I checked that the certificate, user and password entries are all fine. Exactly the same settings work OK in a different laptop with 15.5 (with a different wifi adaptor, joining the same wifi point).

In the Lenovo laptop, also all worked fine in 15.4, so I am assuming it is a problem with the iwlwifi version in 15.5. The installed version is kernel-firmware-iwlwifi 20230320-150500.1.1
Is it possible to try an older firmware to see if that is the source of the problem? How is this done?

Many thanks.

2

Am also experienceing same/similar problem :frowning:

Ubuntu has no issue connecting using WIFi however openSUSE 15.5 fails to connect.

inxi -F shows this (edited) extract

Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
driver: r8169
IF: eth0 state: up speed: 1000 Mbps duplex: full mac: b4:2e:99:XX:XX:XX
Device-2: TP-Link TL-WN823N v2/v3 [Realtek RTL8192EU] type: USB
driver: rtl8xxxu
IF: wlan0 state: down mac: 28:87:ba:XX:XX:XX

3

Hi, Is your problem accessing enterprise wifi points? or all wifi points?
Oddly I can connect to wifi at home, but not to the enterprise point at work.
As mentioned above another machine with 15.5 (but a different adaptor) can connect without problems using the same certificate (I downloaded the certificate more than once in case it was a file corruption) and settings. That is why I am guessing it might be an issue with the current iwlwifi driver/firmware but I have no idea if one can try a different/older firmware.
Regards

4

@paulparker
You have different hardware as the OP.
Maybe it depends on that.

So please open up a new thread.

1 Like
5

Hi,
I could gather some more details.
I guess that the problem I am seeing is the same or very similar to:
https://bugzilla.suse.com/show_bug.cgi?id=1207913

but I find it odd that I can connect without problems with another leap 15.5 machine that has a different wifi adapter:

Qualcom Atheros QCA6174 802.11ac  Wireless Network Adapter (rev 32)

and which obviously does not use the iwlwifi drivers.
This makes me think that it might not be purely a wpa_supplicant problem but perhaps a combination of the new wpa_supplicant with the iwlwifi driver (or just the iwlwifi driver) that the Comet Lake PCH CNVi Wifi adapter uses.

Also I tried as suggested elsewhere:

update-crypto-policies --set=LEGACY

but that did not make any difference.
It is puzzling that this used to work in Leap 15.4.
Regards.

6

Hi, can you provide the configuration you are using?
I try to reproduce this problem, but till now I simply failed.

7

Not exactly sure what the question means. I am using KDE and the network manager.

I am not in front of that machine right now, but we need to set the
Authentication type to ‘Protected EAP (PEAP)’ and ‘MSCHAPv2’,
Then point out the location of the downloaded certificate stored in the machine and using the user name and password of the user.
The connection is initially made, but after some seconds there is a “!” symbol and a notification as described at the top of this thread.

8

Yes that was the info I was looking for thx.

I think for testing, you could install an older kernel maybe the one from 15.4

zypper ar -p 100 http://download.opensuse.org/distribution/leap/15.4/repo/oss/ repo-oss-15.4
zypper search -s -r repo-oss-15.4 kernel-default
zypper in --oldpackage  -r repo-oss-15.4 kernel-default-5.14.21-150400.22.1

If it ask for downgrading dracut, I wound keep the current installed version!

9

Maybe the new kernel for Leap 15.5 will help, there are some patches for iwlwifi inside.

So please:
zypper up

10

Hi. Out of frustration that I was unable to resolve this, I decided as a last resort to reinstall Leap 15.5. This time it the enterprise wifi works!
I will probably never know what the problem was (a misconfiguration of some kind, some missing file?) but fortunately all works fine for me.