I can tell you something that doesn't work, to hopefully save you some
time. One of the earlier comments on this bug suggested that the issue was
being caused by support for 3DES being removed from Bionic Beaver. I
downloaded the source code for OpenSSL 1.1.0i, and compiled the code with
the option to enable weak ciphers. My install of OpenSSL now supports 3DES,
but I am still unable to connect to WPA2 Enterprise WiFi networks. I
downloaded the source code for the update-crypto-policies command that
Fedora uses. It looks like it is just a bunch of perl scripts. I am going
to look at what the LEGACY scripts do to see if I can figure out exactly
what option they are using on Fedora to work around this issue.
Unfortunately I haven't been able to look through all of the scripts yet.

On Mon, Sep 17, 2018 at 5:21 AM NAGENDRA PRABHU <1748...@bugs.launchpad.net>
wrote:

> I also ran into this issue after upgrading from 16.04 to 18.04.
> Any updates on this?
> What's the Ubuntu equivalent of the Fedora workaround for this? ($
> update-crypto-policies --set LEGACY)
> If it is not available, is it possible to make a fix by downgrading
> openSSL? If so, can you please explain the steps?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1748839
>
> Title:
>   Problem to connect to WPA2/PEAP WIFI  - gnome-shell
>
> Status in network-manager package in Ubuntu:
>   Confirmed
>
> Bug description:
>   This problem is also happened on my desktop.
>
>   After upgrading OS from Ubuntu 16.04 to Ubuntu 18.04.1 LTS, my PC
>   could not connect and authenticate on WiFi with  WPA2/PEAP/MSCHAPv2/no
>   CA certificate/true username and password.
>
>
>   I tried to solve the  problem following URL link; however, it could not
> help me also.
>
> https://askubuntu.com/questions/279762/how-to-connect-to-wpa2-peap-mschapv2-enterprise-wifi-networks-that-dont-use-a-c
>
>
>   My PC  is HP Compaq Pro 4300, CPU: Intel® Core™ i3-3220 CPU @ 3.30GHz ×
> 4, OS: Ubuntu 18.04.1 (64-bit).
>
>   root@joe-UBTPC:/root #     lspci
>
>   00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core
> processor DRAM Controller (rev 09)
>   00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd
> Gen Core processor Graphics Controller (rev 09)
>   00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series
> Chipset Family MEI Controller #1 (rev 04)
>   00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset
> Family USB Enhanced Host Controller #2 (rev 05)
>   00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset
> Family High Definition Audio Controller (rev 05)
>   00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset
> Family PCI Express Root Port 1 (rev b5)
>   00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset
> Family PCI Express Root Port 2 (rev b5)
>   00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset
> Family PCI Express Root Port 3 (rev b5)
>   00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset
> Family PCI Express Root Port 4 (rev b5)
>   00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset
> Family PCI Express Root Port 5 (rev b5)
>   00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset
> Family PCI Express Root Port 6 (rev b5)
>   00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset
> Family USB Enhanced Host Controller #1 (rev 05)
>   00:1f.0 ISA bridge: Intel Corporation H61 Express Chipset Family LPC
> Controller (rev 05)
>   00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset
> Family SATA AHCI Controller (rev 05)
>   00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family
> SMBus Controller (rev 05)
>   03:00.0 Network controller: Ralink corp. RT5392 PCIe Wireless Network
> Adapter
>   06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
> RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1748839/+subscriptions
>

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1748839

Title:
  Problem to connect to WPA2/PEAP WIFI  - gnome-shell

Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  This problem is also happened on my desktop.

  After upgrading OS from Ubuntu 16.04 to Ubuntu 18.04.1 LTS, my PC
  could not connect and authenticate on WiFi with  WPA2/PEAP/MSCHAPv2/no
  CA certificate/true username and password.

  
  I tried to solve the  problem following URL link; however, it could not help 
me also. 
  
https://askubuntu.com/questions/279762/how-to-connect-to-wpa2-peap-mschapv2-enterprise-wifi-networks-that-dont-use-a-c
 

  
  My PC  is HP Compaq Pro 4300, CPU: Intel® Core™ i3-3220 CPU @ 3.30GHz × 4, 
OS: Ubuntu 18.04.1 (64-bit).

  root@joe-UBTPC:/root #     lspci

  00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor 
DRAM Controller (rev 09)
  00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd Gen 
Core processor Graphics Controller (rev 09)
  00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series 
Chipset Family MEI Controller #1 (rev 04)
  00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family 
USB Enhanced Host Controller #2 (rev 05)
  00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family 
High Definition Audio Controller (rev 05)
  00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI 
Express Root Port 1 (rev b5)
  00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI 
Express Root Port 2 (rev b5)
  00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI 
Express Root Port 3 (rev b5)
  00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI 
Express Root Port 4 (rev b5)
  00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI 
Express Root Port 5 (rev b5)
  00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI 
Express Root Port 6 (rev b5)
  00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family 
USB Enhanced Host Controller #1 (rev 05)
  00:1f.0 ISA bridge: Intel Corporation H61 Express Chipset Family LPC 
Controller (rev 05)
  00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset 
Family SATA AHCI Controller (rev 05)
  00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus 
Controller (rev 05)
  03:00.0 Network controller: Ralink corp. RT5392 PCIe Wireless Network Adapter
  06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. 
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1748839/+subscriptions

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