Broadcom BCM4313 - no wifi available at all, Ubuntu 24.04

[Linux_newbie_no1]

I have spent most of today crawling through previous threads about this to no avail. Basically I decided to upgrade my old Lenovo G580 with a new SSD, which was fine. I then installed the latest version of Ubuntu Studio. At the beginning of the install where you get the option to join a wireless network it worked fine, however once the install had completed wifi had disappeared. I am now using ethernet. I tried following the sticky: https://ubuntuforums.org/showthread.php?t=2214110 to no avail, plus numerous other possibilities, but whatever I've tried, wifi remains 'disappeared'.

Output of lspci -nn -d 14e4:

02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4313 802.11bgn Wireless Network Adapter [
14e4:4727] (rev 01)

Output of lspci -vvnn | grep -A 9 Network

Subsystem: Broadcom Inc. and subsidiaries BCM4313 802.11bgn Wireless Network Adapter [14e4:051b]
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
Region 0: Memory at f0500000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel modules: bcma, wl


I have tried:
sudo -i
echo "blacklist b43" >> /etc/modprobe.d/blacklist.conf
echo "blacklist ssb" >> /etc/modprobe.d/blacklist.conf
exit
I have tried deselecting the Broadcom driver in Software Sources:


Is there anything else I can try? And please understand I am a complete Linux novice, so any instructions will need step by step line by line detail, thanks
sudo -iecho "blacklist b43" >> /etc/modprobe.d/blacklist.confecho "blacklist ssb" >> /etc/modprobe.d/blacklist.confexit

[Linux_newbie_no1]

I should have added,

sudo lshw -C network:

*-network UNCLAIMED
description: Network controller
product: BCM4313 802.11bgn Wireless Network Adapter
vendor: Broadcom Inc. and subsidiaries
physical id: 0
bus info: pci@0000:02:00.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: latency=0
resources: memory:f0500000-f0503fff
*-network
description: Ethernet interface
product: AR8162 Fast Ethernet
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:03:00.0
logical name: enp3s0
version: 10
serial: 3c:97:0e:83:b2:27
size: 100Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-
fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=alx driverversion=6.8.0-49-lowlatency duplex=ful
l ip=192.168.0.14 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:19 memory:f0400000-f043ffff ioport:2000(size=128)

[Linux_newbie_no1]

I have also tried:

sudo apt remove broadcom-sta-dkms bcmwl-kernel-source


sudo apt install firmware-b43-installer

[jeremy31]

See the wireless script link in my signature and post results

[Linux_newbie_no1]

Thanks, I'm in the UK, will tackle this tomorrow morning after a night's sleep

[Linux_newbie_no1]

I've now run the script, as per attached.
Attachment 294605

Please let me know your thoughts

[jeremy31]

Remove the blacklist on the drivers

sudo rm /etc/modprobe.d/broadcom-sta-dkms.conf

Reboot

[Linux_newbie_no1]

That worked a treat! Thank you very much, I was just about to install a 22.04 ISO I had saved. Now just to work out how to reinstate all the additional touchpad config options which seem to have disappeared between 22 and 24 and all will be well!

[varyag]

Hi there, I'm also using the BCM4313 14e4:4727 (rev 01) driver and I followed the steps in https://ubuntuforums.org/showthread.php?t=2214110 to make my Wi-Fi work properly.

The wifi is able to connect but after some minutes it stops working and the 'no wifi adapter found' message is shown. I know that I need to use either the proprietary drivers or brcmsmac (linux-firmware is installed).

Pastebin of the wireless network script output: https://termbin.com/cjun

[varyag]

Just to let everyone know: I ran that command, rebooted and now my wifi works without an ethernet cable and it doesn't disconnect after some time. Thank you!