Re: Panic: ath wireless card problem

[David Young <dyoung%pobox.com@localhost>]

On Wed, Jan 12, 2011 at 06:54:32PM +0000, John Klos wrote:
> trap: pid 452.1 (ifconfig): kernel MCHK trap @ 0x101a1c (SRR1=0x49030)
> panic: trap
> Begin traceback...
> 0xd4559800: at trap+0x108
> 0xd4559890: kernel MCHK trap by bsr4+0x4: srr1=0x49030
>             r1=0xd4559950 cr=0x28002022 xer=0x20000000 ctr=0x101a18
> 0xd4559950: at 0xfffffffc
> 0xd4559980: at ar5212ResetTxQueue+0x36c

Hmm.  We may be reading/writing registers while the hardware has no
power.  I think that would cause a PCI exception that would lead to
MCHK.

Is the interface up when you do that?  It should not fail, regardless,
but I wonder if there is any difference between the problem case and the
following?

ifconfig ath0 up
ifconfig ath0 mediaopt monitor

Dave

-- 
David Young             OJC Technologies
dyoung%ojctech.com@localhost      Urbana, IL * (217) 278-3933