[bwn] bcm4311 Acer Aspire One rf switch

[Warren Block]

On Fri, 17 Aug 2012, Bernhard Schmidt wrote:

> On Sun, Aug 12, 2012 at 4:54 AM, Adrian Chadd <adrian.chadd at gmail.com> wrote:
>> Irs very likely an acpi problem. Therell be some IO line hooked in that
>> acpi controls.
>
> Not sure about that, the Linux driver polls the hardware for the RF
> kill state, that smells like that there is no event at all.
>
>> On Aug 11, 2012 7:02 PM, "skydrome" <chris2603 at gmail.com> wrote:
>>
>>> I have the same setup as this person here
>>> http://forums.freebsd.org/archive/index.php/t-29407.html
>>>
>>> the exactly problem is when issuing:
>>> wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf
>>>
>>> RF Switch LED on laptop blinks once and i receive message:
>>> bwn0: firmware version (rev 410 patch 2160 date 0x751a time 0x7c0a)
>>> wlan0: ieee80211_new_state_locked: pending INIT -> SCAN transition lost
>>> bwn0: status of RF switch is changed to OFF
>>> bwn0: please turn on the RF switch
>>>
>>> Now the problem is is that the aspire one bios has no bios control for
>>> explicitly en|dis|abling the rf switch, in fact, i cannot turn it off.
>>> When i switch it, it remains on (light is on)
>>>
>>> Ive tried editing if_bwn.c, removing the check for rf_onoff() but to
>>> no avail, ill have to read the source more in depth.
>>> I wonder what else i can do to resolve this issue.
>>>
>>> Extra Info:
>>> on linux (specifically archlinux), the rf switch doesnt do anything,
>>> doesnt even trigger a acpi event. On fbsd no acpi event is trigger
>>> either (debug.acpi.enabel_debug_object=1)
>
> Does it make a difference if you reload the driver? eg. unload the
> module, change switch state, reload driver?

Earlier Aspire Ones with Atheros cards needed a couple of entries in 
/etc/sysctl.conf to make the switch and LED work correctly:

dev.ath.0.ledpin=3
dev.ath.0.softled=1

Does that apply to bwn?