BCM4322 keeps switching band frequency

[Adrian Chadd]

On 22 February 2017 at 16:51, Dora Smith <tiggernut24 at yahoo.com> wrote:
> I'm confused.  A MAC is not a radio.   A wireless card definitely scans for
> things to connect to, and then you choose a connection and connect.

The MAC has a PHY attached and a radio attached. The broadcom stuff
can actually be, hm:

MAC <-> PHY <-> Radio

MAC <-> PHY-2G <-> radio 2G
         PHY-5G <-> radio-5G

and some earlier things:

MAC-2G <-> PHY-2G <-> radio-2G
MAC-5G <-> PHY-5G <-> radio-5G

So MAC and PHY can sometimes need switching...


-adrian


> If I ever ran into the card switching frequencies, I didn't know it.  I did
> however have constant problems with the connection.
>
> I finally gave up on that card and installed another one with a different
> manufacturer; no problems since.
>
> Dora
>
> -----Original Message----- From: Adrian Chadd
> Sent: Wednesday, February 22, 2017 6:30 PM
> To: Can selcuk
> Cc: b43-dev at lists.infradead.org
> Subject: Re: BCM4322 keeps switching band frequency
>
>
> Hi,
>
> That's the radio doing scanning. What's the "scan dump" output look like?
>
>
> -adrian
>
>
> On 22 February 2017 at 04:51, Can selcuk <can.selcuk at limsi.fr> wrote:
>>
>> Hi I do have an old macbook (late 2008) with an embedded BCM4322 wireless
>> device. I use the b43 driver and I keep getting disconnected/reconnected
>> as
>> the driver switches band frequencies ..  I always had this issue with all
>> the kernels I used. Do you guys have any idea how to force the driver
>> working at a single frequency ??
>>
>> dmesg :
>>
>> [   58.001746] b43-phy0 debug: Switching to 2.4 GHz band
>> [   58.174227] b43-phy0 debug: Switching to 5 GHz band
>> [   58.592232] b43-phy0 debug: Switching to 2.4 GHz band
>> [   58.763176] b43-phy0 debug: Switching to 5 GHz band
>> [   59.184229] b43-phy0 debug: Switching to 2.4 GHz band
>> [   59.355203] b43-phy0 debug: Switching to 5 GHz band
>> [   59.776220] b43-phy0 debug: Switching to 2.4 GHz band
>> [   59.947211] b43-phy0 debug: Switching to 5 GHz band
>> [   60.368227] b43-phy0 debug: Switching to 2.4 GHz band
>> [   60.539231] b43-phy0 debug: Switching to 5 GHz band
>> [   60.960210] b43-phy0 debug: Switching to 2.4 GHz band
>> [ 61.135034] b43-phy0 debug: Switching to 5 GHz band
>> [   61.552285] b43-phy0 debug: Switching to 2.4 GHz band
>> [   61.723233] b43-phy0 debug: Switching to 5 GHz band
>> [   62.145194] b43-phy0 debug: Switching to 2.4 GHz band
>> [   62.321226] b43-phy0 debug: Switching to 5 GHz band
>> [   62.736254] b43-phy0 debug: Switching to 2.4 GHz band
>> [   62.913209] b43-phy0 debug: Switching to 5 GHz band
>> [   63.328209] b43-phy0 debug: Switching to 2.4 GHz band
>> [   63.500552] b43-phy0 debug: Switching to 5 GHz band
>> [   63.920224] b43-phy0 debug: Switching to 2.4 GHz band
>> [   64.094227] b43-phy0 debug: Switching to 5 GHz band
>> [   64.512215] b43-phy0 debug: Switching to 2.4 GHz band
>> [   64.685221] b43-phy0 debug: Switching to 5 GHz band
>> [   65.112208] b43-phy0 debug: Switching to 2.4 GHz band
>> [   65.284251] b43-phy0 debug: Switching to 5 GHz band
>>
>>
>> uname -a
>>
>> Linux djanboox 4.9.6-gentoo-r1-nouveau-kernel #2 SMP PREEMPT Wed Feb 22
>> 12:25:07 CET 2017 x86_64 Intel(R) Core(TM)2 Duo CPU P7350 @ 2.00GHz
>> GenuineIntel GNU/Linux
>>
>> lspci -vvn|grep 43 -A7
>> 03:00.0 0280: 14e4:432b (rev 01)
>>         Subsystem: 106b:008d
>>         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: 256 bytes
>>         Interrupt: pin A routed to IRQ 20
>>         Region 0: Memory at 93100000 (64-bit, non-prefetchable) [size=16K]
>>         Capabilities: [40] Power Management version 3
>> --
>>         Kernel driver in use: b43-pci-bridge
>>
>> Best,
>> Can
>>
>> _______________________________________________
>> b43-dev mailing list
>> b43-dev at lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/b43-dev
>
>
> _______________________________________________
> b43-dev mailing list
> b43-dev at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/b43-dev