HP Elitebook G2 745 Wfif Problem - no networks found

[nowocmic]

Hello,

I have problem with WiFi on HP Elitebook G2 745. I can't find any networks. I know there are some solutions to this particular card on this form but all those solutions didn't work in my case.
I am using Broadcom Wireless Adapter BCM4352 802.11ac. I did install proper driver via:

sudo apt-get update
sudo apt-get install bcmwl-kernel-source
sudo modprobe wl

I also checked
rfkill list all
and everywhere is "no" so nothing is blocking the wifi adapter.

When I search in console: sudo iwlist scan it returns "no results".

I did everything what I found on this forum and still the same problem - no networks.
Do you have any idea how to fix it or maybe Linux is not right environment for HP G2 745 and I need to switch on Windows10 ?

[praseodym]

Did you deactivate SecureBoot? The driver is not signed...

[nowocmic]

Hello,

In BIOS settings the SecureBoot Configuration is not editable but checkboxes are unmarked so I assume it doesn't work. Any other advice?

[chili555]

What does this tell us?

lspci -nnk | grep 0280 -A3

Old Chili is getting a bad feeling right here....

[nowocmic]

Here it is:

02:00.0 Network controller [0280]: Broadcom Limited BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03)
    Subsystem: Hewlett-Packard Company BCM4352 802.11ac Wireless Network Adapter [103c:2154]
    Kernel driver in use: wl
    Kernel modules: bcma, wl

I did:

sudo apt install shim-signed
sudo update-secureboot-policy --new-key

Now I am trying:

sudo apt-get install ndisgtk

But I can't find .inf file with driver for Windows 10 (only exe).

[chili555]

Here is a long thread about your device: https://ubuntuforums.org/showthread....highlight=43b1 It doesn't end with a good result.

You might try all the steps we tried there and report back.

[nowocmic]

I did it and same effect - no networks found. Does it mean I can't run linux on HP Elitebook G2 745? I am really disapointed how Linux can't handle wifi ...

[jeremy31]

You could replace the wifi card with a supported wifi. Linux has no control of when Broadcom adds support to the proprietary bcmwl to support their wifi cards

[chili555]

I am really disapointed how Linux can't handle wifi ...

As Jeremy suggests, it's not Linux, it's Broadcom.

Many devices, including my Intel, work perfectly in Linux.

[nowocmic]

Guys,

The solution is:

1. Edit as root this file: "/etc/default/grub"
- Find and modify GRUB_CMDLINE_LINUX="" to GRUB_CMDLINE_LINUX="intremap=off"
- Save and exit

2. $sudo grub-mkconfig -o /boot/grub/grub.cfg

3. Reboot

After it wifi works fine.