Brodcom-sta-dkms driver with elementaryOS-8.1 on a MacBookAir (intel)

[vanherpe]

What Happened?

Hi all,
I'm new on this forum.
I recently installed Elementary OS 8.1 (using elementaryos-8.1-stable-amd64-20260219.iso) on a old MacBook Air. Once installed, the Wifi connection seems to be not good (disconnects frequently) and the system asks to install the driver "broadcom-sta-dkms" but the installation of the driver fails.
Error while installing package: "installed linux-headers-6.17.0-23-generic package post installation script subprocess returned error exit status 11".
In the same time the command "uname -r" returns "6.17.0.14-generic"
Installation of ElementaryOS 7.1 works well (module b43 installed), except that the updating fails, may be the same problem ?
Any help ?

Steps to Reproduce

1. Install ElementaryOS 8.1 on MacBookAir
2. WIFi connection does not work
3. Install ElementaryOS 7.1
4. Wifi works
5. Upgrading does not work

Expected Behavior

RAS

OS Version

8.x (Circe)

OS Architecture

amd64 (on most hardwares)

Session Type

Secure Session (Wayland, This is the default)

Software Version

Latest release (I have run all updates)

Log Output

Hardware Info

No response