[CentOS] Broadcom BCM4360

Mon Dec 4 11:14:19 UTC 2017
galtsev at kicp.uchicago.edu <galtsev at kicp.uchicago.edu>

On Mon, December 4, 2017 1:40 am, Alice Wonder wrote:
> On 12/03/2017 11:10 PM, Phil Perry wrote:
>> On 04/12/17 00:38, John R Pierce wrote:
>>> On 12/3/2017 4:22 PM, Gregory P. Ennis wrote:
>>>> I have not been able to get it to work Centos 7.4 machine.  Some of
>>>> the
>>>>   centos user posts had indicated the nux repsitory had a Centos 7
>>>> kmod-
>>>> wl, but it is not present when I tried to search or or install it at
>>>> this time.
>>> this looks potentionally helpful
>>> http://elrepo.org/tiki/wl-kmod
>>> it appears those are closed source drivers with funky licenses, so
>>> they can't just be redistributed without assumption of liability.
>> Correct, elrepo isn't able to freely redistribute the drivers due
>> Broadcom's licensing, but does provide instructions and a SRPM (minus
>> tarball) for you to build yourself.

Every time I encounter big enough trouble about some chipset to have to learn a bit about its internals, I usually learn about its engineering flaw. BCM43xx has the following one: the chip internally is 32 bit, though it sits on 64 bit bus. (Take that with a grain of salt, it's been long time since I looked into that crap).

Once I discover the flaw, I add particular hardware in my black list and do my best to not buy anything containing it. Broadcom as a whole is not in my black list, they have great hardware, but their BCM43XX is, even if they corrected their design flaws since.

I would replace that if possible (Intel would be great candidate), or use USB adapters others suggest.

Just my $0.02


> That's what I have to do, and it can sometimes be a PITA because a
> kernel update can break it and you have to build it again.
> With major updates (like 7.3 to 7.4) you sometimes have to download a
> new nosrc rpm.
>> Alternatively, for $8 you can purchase an adaptor that is natively
>> supported and will work out of the box:
>> https://www.amazon.com/Edimax-EW-7811Un-150Mbps-Raspberry-Supports/dp/B003MTTJOY/ref=sr_1_1?ie=UTF8&qid=1512370979&sr=8-1&keywords=edimax+n150
>> https://www.newegg.com/Product/Product.aspx?Item=N82E16833315091&cm_re=edimax_n150-_-33-315-091-_-Product
>> The above adaptor is based on the Realtek RTL8188CUS chipset and uses
>> the rtl8192cu kernel driver.
> At some point I will be replacing mine, but with a low-profile PCI-E
> card. I've had bad luck with USB wifi adapters, sometimes for example
> they lose connection when a microwave is turned on and when I was
> visiting my parents, had one that lost connection whenever the AC unit
> kicked on.
> My best wifi experience in Linux has been with my T series thinkpad, it
> uses some kind of Intel wireless chipset that is in the kernel.
> I'm going to be looking for a low profile Intel PCI-E card, but for now
> my broadcom PCI-E actually works quite well - with the exception of
> needing to rebuild every now and then (last time was 7.3 to 7.4 update)
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos

Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247