Problem wifi: connection lost

[niccc]

Hi!, I hope it is the correct section.

I just installed sparkylinux lxqt 64bit, but I have a problem with the wifi. When I select the wireless network I want to connect to, I get an error:
NetworkManager(nm tray) connection lost.

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System:    Host: nicola-pc Kernel: 4.19.0-14-amd64 x86_64 bits: 64 Desktop: LXQt 0.14.1
           Distro: SparkyLinux 5.14 (Nibiru)
Machine:   Type: Laptop System: Apple product: Macmini5,3 v: 1.0 serial: <root required>
           Mobo: Apple model: Mac-7BA5B2794B2CDB12 v: Macmini5,3 serial: <root required> UEFI: Apple v: 135.0.0.0.0
           date: 06/13/2019
CPU:       Quad Core: Intel Core i7-2635QM type: MT MCP speed: 798 MHz min/max: 800/2900 MHz
Graphics:  Device-1: Intel 2nd Generation Core Processor Family Integrated Graphics driver: i915 v: kernel
           Display: x11 server: X.Org 1.20.4 driver: modesetting unloaded: fbdev,vesa resolution: 1920x1080~60Hz
           OpenGL: renderer: Mesa DRI Intel Sandybridge Mobile v: 3.3 Mesa 18.3.6
Network:   Device-1: Broadcom Limited NetXtreme BCM57765 Gigabit Ethernet PCIe driver: tg3
           IF: eth0 state: up speed: 1000 Mbps duplex: full mac: 3c:07:54:56:81:74
           Device-2: Broadcom Limited BCM4331 802.11a/b/g/n driver: bcma-pci-bridge
           IF-ID-1: wlan0 state: down mac: 2e:28:a7:f0:80:da
Drives:    Local Storage: total: 1.36 TiB used: 4.68 GiB (0.3%)
Repos:     Active apt repos in: /etc/apt/sources.list
           1: deb http://ftp.debian.org/debian/ stretch main contrib non-free
           No active apt repos in: /etc/apt/sources.list.d/dropbox.list
           No active apt repos in: /etc/apt/sources.list.d/liquorix.list
           Active apt repos in: /etc/apt/sources.list.d/sparky.list
           1: deb https://repo.sparkylinux.org/ core main
           2: deb-src https://repo.sparkylinux.org/ core main
           3: deb https://repo.sparkylinux.org/ nibiru main
           4: deb-src https://repo.sparkylinux.org/ nibiru main
Info:      Processes: 208 Uptime: 35m Memory: 3.77 GiB used: 1.14 GiB (30.3%) Shell: bash inxi: 3.0.32

Internet works only with the ethernet cable.

hope you can help me, thanks!

[paxmark1]

Thanks for the inxi.   Old Mac, eh.
I searched a little, as I hear Macs can have quirks on linux installs   

LXQT.   Possibly not network-manager.    The terminal program is usually connman (or connmanctl) and I do prefer over network-manager.   The GUI is called CMST     
If you do have the connman base for LXQT and the CMST gui I would look there first via CMST/

The added steps of downloading drivers should not be necessary as Sparky automatically provides the non--free drivers and has your /etc/apt/sources.list populated with non-free and contrib.

https://wiki.debian.org/bcm43xx        ### Note as above you do not have to edit /etc/apt/sources.list - You are running Sparky     wiki page last updated 2020-09

http://michaelminn.com/linux/macbookpro8.2/
states that it likes    broadcom-sta-dkms    that info is from at least 1  version back from the present Debian stable.   You inxi states the driver loaded is   bcma-pci-bridge I do not know if that is the problem. 
#####    The above authors non-usage of systemd is probably his own opinion, and I strongly doubt that using systemd  is a problem.   

For a quick check that will not change your system you can try.   

"sudo apt install firmware-b43-installer"       ### the -s flag "simulates an install but does not perform.   

I am not a wifi guru (Oh I do miss DrXaos from the #! forum over a decade ago).    I see via the Debian wiki that there is a   https://wiki.debian.org/brcmfmac     but it is a different number than yours, the  43602.   

The often helpful but always use with caution ArchLinux  wiki talks about a possible need to black list.   

When dealing with drivers, the usage of dkms does make things much simpler  for new kernels.   

If someone else suggests the  usage of  broadcommsta-dkms   that might be something to try first.

" apt show broadcom-sta-dkms"    has more info. 

"sudo apt -s install broadcomm-sta-dkms"   will simulate, but of course will not show the actual build of the kernel module.   



Hopefully others with more experience will post.   I hope I was not as clear as mud. 




   

[niccc]

thank you for your time