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Date:      Mon, 19 Aug 2013 11:15:32 +0530
From:      Tj Hariharan <tj@archlinux.us>
To:        Adrian Chadd <adrian@freebsd.org>
Cc:        FreeBSD Stable Mailing List <freebsd-stable@freebsd.org>
Subject:   Re: [ATH] 9.2-PRERELEASE and wlan0 device disconnection
Message-ID:  <20130819054501.GA92991@tahoe.tj-h.info>
In-Reply-To: <CAJ-VmokkFTnOs=%2BPZH-xt76sodHVC9KYNkaDE%2BUOcxP7VWnyyQ@mail.gmail.com>
References:  <CAOz4XF-%2B4dnecDkFTy6FPHqjSYjxmYkM9Ctp0QiXnf%2B7CsueEg@mail.gmail.com> <CAOz4XF9Ne54ohTfF26tFWjc34qeFy2jwk5bKeNDpbwGurgOsFA@mail.gmail.com> <CAOz4XF8_=_ZuoHj0-Xz3dmLOt=AB6Hu64ppqQ9d0WoC-zBeiEw@mail.gmail.com> <CAJ-Vmon-pyc_j4Pj8Sb6VFZfXRXk%2Bra1uRg-hXBhGcO7WPxLYQ@mail.gmail.com> <20130818121916.GA55695@tahoe.tj-h.info> <CAJ-VmokkFTnOs=%2BPZH-xt76sodHVC9KYNkaDE%2BUOcxP7VWnyyQ@mail.gmail.com>

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O never mind, it still happens, though obviously more intermittently,
since I didn't notice anything odd for almost an entire day. A few more
things this time though:

a. It IS intermittent, there seems to be very little pattern to this,
except that it seems to be more likely to happen when/if I am using the
internet more and actively (e.g. youtube etc rather than just let a few
small internet using things run).=20

b. There seems to be an extra line in the error logs:
=09
	"Aug 19 10:53:47 tahoe dhclient[79063]: ioctl(SIOCGIFFLAGS) on
		wlan0: Operation not permitted"

c. Speaking of error logs; I think this was the case before as well, but
now it has become more obvious as I try to diagnose the exact issue: the
breakage does not ALWAYS produce any output in any logs. i.e.: there are
many times that wlan0 craps out and no logs show anything out of the
ordinary.=20

d. The above is in addition to the intermittent-ish nature of the
issue (that was mentioned) as well as the fact that restarting netif once d=
oes not always fix
it, sometimes netif needs to be restarted 2 or 3 times in a row. (Before
any restarts ping just doesn't show any output. After 1 restart it just
immediately gets back to me with "network unreachable" type error).=20


I will try to submit a pr in the next few days, studying for an exam
right now.=20

Additionally, once I figure out how to use SVN, I can try to work
through the different svn versions to see where it goes awry, though
this will take a lot longer as compiling world takes about a full day on
this machine.=20

Thanks,=20
-Tj

--=20
Tj Hariharan
Email: Tj@archlinux.us=20

On Sun, Aug 18, 2013 at 09:02:41AM -0700, Adrian Chadd wrote:
> good to know!
>=20
>=20
>=20
>=20
> -adrian
>=20
>=20
> On 18 August 2013 05:19, Tj Hariharan <tj@archlinux.us> wrote:
>=20
> > Ok so, at the time I was using r254246. Just this afternoon, I realised
> > there were quite a few commits after that. I am now on r254444 and
> > everything seems to be working fine, i.e. no more wlan0 dying randomly.
> > I have no idea what is causing this, though. (the r254246 was from
> > installing from a download of 9.2 dvd).
> > On Sat, Aug 17, 2013 at 09:49:49PM -0700, Adrian Chadd wrote:
> > > Hi!
> > >
> > > I'm not sure what could've caused this! Not much has changed in the
> > > wireless stack and ath driver between 9.1 and 9.2. Would you be able =
to
> > > work through different svn versions of stable/9 between 9.1 and 9.2 to
> > > narrow down when things broke?
> > >
> > > It may be something other than the wifi driver/stack.
> > >
> > > Thanks!
> > >
> > >
> > > -adrian
> > >
> > >
> > >
> > > On 17 August 2013 05:12, Tj <tj@archlinux.us> wrote:
> > >
> > > > (Sorry emailed from wrong address, re emailing)
> > > >
> > > > Hi, I just upgraded to 9.2-PRERELEASE from 9.1-RELEASE, I have not =
had
> > this
> > > > problem before with any version of freebsd however. I have an ATHER=
OS
> > card
> > > > (AR928X according to pciconf), things go fine except every few
> > > > minutes/hours (randomly) I get the following
> > > > http://bpaste.net/show/123755/ type
> > > > of error, and  the network is no longer connected, however, beyond =
the
> > fact
> > > > that I can't even reach my router there's no obvious other sign, I.e
> > > > ifconfig still shows a valid output with ip address etc as if it we=
re
> > still
> > > > connected. Restarting the netif service fixes it, until it happens
> > again -
> > > > which it does in a short while (though sometimes I have to restart
> > netif
> > > > twice).
> > > >
> > > > As I said, this happened just as I upgraded from 9.1 to 9.2. Anyone
> > have
> > > > any idea what's causing this?
> > > >
> > > > -Tj Hariharan
> > > > _______________________________________________
> > > > freebsd-stable@freebsd.org mailing list
> > > > http://lists.freebsd.org/mailman/listinfo/freebsd-stable
> > > > To unsubscribe, send any mail to "
> > freebsd-stable-unsubscribe@freebsd.org"
> > > >
> >
> > --
> > Tejas (Tj) Hariharan
> > Email: tj@archlinux.us
> >


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