linux-kernel - Re: 3.18-rc0: iwlegacy failed after a while

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Date:	Sun, 26 Oct 2014 11:33:15 +0100
From:	Stanislaw Gruszka <sgruszka@...hat.com>
To:	Pavel Machek <pavel@....cz>
Cc:	"Grumbach, Emmanuel" <emmanuel.grumbach@...el.com>,
	kernel list <linux-kernel@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"Berg, Johannes" <johannes.berg@...el.com>,
	"ilw@...ux.intel.com" <ilw@...ux.intel.com>
Subject: Re: 3.18-rc0: iwlegacy failed after a while

On Sat, Oct 25, 2014 at 01:42:46PM +0200, Pavel Machek wrote:
> > Since 3.17 we have only 2 minor iwlegacy changes on current linus tree.
> > If this is a regression it's probably caused by different subsystem
> > changes, most likely by PCI changes. If this is not regression, such
> > errors could be caused by enabling PS, but that has to be done
> > explicitly, Pavel did you enable power_save ? 
> 
> This is running pretty standart MATE desktop, and no, I don't think I
> enabled that.

It can be checked by "iw dev wlan0 get power_save" .

More important quiestions: Is this regression, did you see this error
before? How reproducible is this problem?

There is this message in the dmesg:

iwl3945 0000:03:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020

0xa5a5a5a2 value suggest that we disconnect from the PCI bus, hence
this could be also a H/W problem.

Stanislaw
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