Broadcom WLAN kernel module not loaded when secure boot is enabled
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| broadcom-sta (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned | ||
Bug Description
With a fresh install of Ubuntu 24.04 LTS on an older notebook with a Broadcom BCM4352 WLAN chip and secure boot enabled, I tried to get WiFi running by installing the bcmwl-kernel-source package. Unfortunately, the module does not load:
> sudo modprobe wl
modprobe: ERROR: could not insert 'wl': Key was rejected by service
I was then following the procedure described here, to sign the wl kernel module manually:
This resulted in this warning - but the module wl module did not load either.
>dkms status
broadcom-
Can you advise how to get the wl kernel module running? Thank you in advance.
-------
Description: Ubuntu 24.04 LTS
Release: 24.04
bcmwl-kernel-
Installed: 6.30.223.
Candidate: 6.30.223.
Version table:
*** 6.30.223.
500 http://
100 /var/lib/
02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4352 802.11ac Dual Band Wireless Network Adapter [14e4:43b1] (rev 03)
Subsystem: Lenovo BCM4352 802.11ac Dual Band Wireless Network Adapter [17aa:0623]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 255
IOMMU group: 10
Region 0: Memory at c1200000 (64-bit, non-prefetchable) [size=32K]
Region 2: Memory at c1000000 (64-bit, non-prefetchable) [size=2M]
Capabilities: <access denied>
Kernel modules: bcma, wl
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: bcmwl-kernel-source 6.30.223.
ProcVersionSign
Uname: Linux 6.8.0-38-generic x86_64
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
CasperMD5CheckR
CurrentDesktop: ubuntu:GNOME
Date: Tue Jul 16 22:38:08 2024
InstallationDate: Installed on 2024-07-14 (2 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-
XDG_RUNTIME_
SourcePackage: broadcom-sta
UpgradeStatus: No upgrade log present (probably fresh install)
| Sebastian (pythaios) wrote | #1 |
| Sebastian (pythaios) wrote | #2 |
| Launchpad Janitor (janitor) wrote | #3 |
| Changed in broadcom-sta (Ubuntu): | |
| status: | New → Confirmed |
I would like to add a few more details on how to reproduce (and how I fixed it eventually). I installed Ubuntu 24.04 alongside to an existing Ubuntu 20.04 installation with UEFI boot enabled, but on the same physical devices (just on a new/different partition). Grub detected the existing 20.04 installation but it appears the UEFI image does not get updated: I could list the available boot options but the boot loader did not appear on machine start-up after running grub-update.
After some time, I decided to back the entire disk up and erase it. It seems erasing the existing UEFI boot partition and followed by a fresh install did the trick: when installing the bcmwl-kernel-source package, I was asked to enter a password for enrolling a new MOK, after reboot I prompted the password and the wl module loads just fine.