Re: [Madwifi-users] Machine Lockup

[Ahmet B. <ah...@th...>]

Herbert,

In my case, driver loads ok. The lock up occus when I turn on the interface 
by ifup. If I did not turn it on but leave the modules loaded,I do not 
observe a crash.

Very similar case for the watchdog, when I have it enabled my system also 
reboots after the lock up.

The crash happens consistently in my system. Everytime I boot, for sure it 
crashes within minutes of turning on the interfaces.

Thanks,
Ahmet
----- Original Message ----- 
From: "Herbert Rubens" <he...@cs...>
To: "'Ahmet Basagalar'" <ah...@th...>; "'madwifi'" 
<mad...@li...>
Sent: Thursday, April 27, 2006 7:35 AM
Subject: RE: [Madwifi-users] Machine Lockup


Ahmet,

We're seeing something similar. We are running EMP-8602 cards on
some xscale based devices running kernel 2.6.15. We've seen system lockups
exactly when the driver is loading. We have a watchdog, so the system
immediately reboots. The problem doesn't happen every time, so it seems like
there is some kind of race condition in the driver. Since we have a watchdog
the problem results in the device booting in maybe a minute instead of 15
seconds, because of the lock/reboot. Once the driver loads properly it seems
to work fine.

Does this problem happen to you every time you boot (or load the
driver) or does it just seem to happen randomly? And when you say "turn on
the first interface" do you mean the driver is loaded and then you UP the
interface? Or do you mean when you load the driver it locks?

I've had this happen with a serial cable attached to the device and
I also haven't seen any kernel dumps or any sort of output. The watchdog
just trips and the system reboots.

Thanks.

-Herb


-----Original Message-----
From: mad...@li...
[mailto:mad...@li...] On Behalf Of Ahmet
Basagalar
Sent: Wednesday, April 26, 2006 1:10 PM
To: madwifi
Subject: Re: [Madwifi-users] Machine Lockup

I have tried svn 1523 today. But unfortunately it did not resolve the lockup

problem I am seeing. I have three Engenius EMP-8602 connected to a Via C3
processor based board.

The system crashes after I turn on the first wireless interface. It is very
consistent. It is a total freeze without dumping any kernel panic. System
does not respond to anything. The cursor keeps blinking tough.

I am using a 2.6.14 kernel without SMP support.

Thanks,
Ahmet



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