ACPI problems with Dell laptops

Greg 'groggy' Lehey grog at FreeBSD.org
Mon Nov 28 17:45:21 GMT 2005


On Sunday, 27 November 2005 at 23:10:01 +0000, Chris Howells wrote:
> On Sunday 27 November 2005 11:50, Greg 'groggy' Lehey wrote:
>> Since then I've also discovered that the builtin wireless card doesn't
>> work either.  It's:
>>
>>   iwi0: <Intel(R) PRO/Wireless 2915ABG> mem 0xdfcfd000-0xdfcfdfff irq 10 at
>> device 3.0 on pci3 iwi0: Ethernet address: 00:13:ce:46:28:49
>
> <snip>
>
>>   DHCPDISCOVER on iwi0 to 255.255.255.255 port 67 interval 6
>>   DHCPDISCOVER on iwi0 to 255.255.255.255 port 67 interval 15
>>   send_packet: Network is down
>>
>> On the console I get the detailed error message:
>>
>>   iwi0: fatal error
>
> iwi(4) is unfortunately pretty unstable so I'm not sure if it's directly
> related to the ACPI problems.

Yes, as I said: since then.  It doesn't work with or without ACPI, so
I see this as unrelated to ACPI.  It does seem relevant to the
original Subject: line ("Laptop choices"), though.

Even more information about iwi0: I googled and found some information
about iwi and Dell laptops, and after issuing the command

  # ifconfig iwi0 mode b

I got an association and was able to use the card.  Then I tried

  # ifconfig iwi0 mode g

which caused a panic

  #9  0xc0648ff7 in panic (fmt=0xc087130c "mutex %s recursed at %s:%d") at /usr/src/sys/kern/kern_shutdown.c:539
  #10 0xc064180b in _mtx_assert (m=0xc4d1cb6c, what=0xc1033000, file=0xc08726bd "/usr/src/sys/kern/kern_synch.c",
    line=0xbc) at /usr/src/sys/kern/kern_mutex.c:748
  #11 0xc064ee6a in msleep (ident=0xc4d1c000, mtx=0xc4d1cb6c, priority=0x0, wmesg=0xc0aadbd3 "iwiinit", timo=0x3e8)
    at /usr/src/sys/kern/kern_synch.c:188

Unfortunately, the stack beyond this point was corrupt.  Since then I
haven't been able to reproduce getting the card to associate or
(obviously) the panic.  So I'd agree that iwi is still a bit flaky.

Greg
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