linux-kernel - Re: iwlwifi-driver card doesn't work with 3.19-rc2+

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Date:	Tue, 30 Dec 2014 16:03:48 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Emmanuel Grumbach <egrumbach@...il.com>
cc:	Johannes Berg <johannes.berg@...el.com>,
	Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
	Intel Linux Wireless <ilw@...ux.intel.com>,
	linux-wireless <linux-wireless@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: iwlwifi-driver card doesn't work with 3.19-rc2+

On Tue, 30 Dec 2014, Emmanuel Grumbach wrote:

> > I just booted current Linus' tree (5faa0154fe33) on my x200s thinkpad, and
> > wifi doesn't work. iwconfig is telling me that wlan0 interface has no
> > wireless extensions.
> 
> So why do you used them?
> They have been deprecated for a couple of years now. You should be
> using nl80211 based tools such as iw.

My userspace wireless setup tool (wicd) is using wireless extensions, and 
even the most recent version uses solely that.

I am pretty sure that's not the only tool in the world.

> > Previous kernel that is known to work on this machine is 3.18-rc5. I 
> > can do a bisect if needed, but wanted to ask in case this is a known 
> > problem.
> 
> 3.19 is the first kernel that actually removed the wireless extensions.

That's userspace breakage I am pretty sure a LOT of people will be 
hitting. I don't think this fits into the way we are maintaining userspace 
compatibility at all.

-- 
Jiri Kosina
SUSE Labs
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