From: "Coelho, Luciano" <luciano.coelho@intel.com>
To: "regressions@leemhuis.info" <regressions@leemhuis.info>,
"Greenman, Gregory" <gregory.greenman@intel.com>
Cc: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
"chiluk@ubuntu.com" <chiluk@ubuntu.com>,
"johannes@sipsolutions.net" <johannes@sipsolutions.net>,
"regressions@lists.linux.dev" <regressions@lists.linux.dev>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [regression] Bug 216753 - 6e 6 ghz bands are disabled since 5.16 on intel ax211
Date: Thu, 1 Dec 2022 11:33:34 +0000 [thread overview]
Message-ID: <2026016246ef719605c9932feeb56b105833593b.camel@intel.com> (raw)
In-Reply-To: <14722778-dda0-cb9f-8647-892493d94a5c@leemhuis.info>
On Thu, 2022-12-01 at 11:14 +0100, Thorsten Leemhuis wrote:
> Hi, this is your Linux kernel regression tracker.
>
> Luca, I noticed a regression report in bugzilla where I'd like your
> advice on. To quote https://bugzilla.kernel.org/show_bug.cgi?id=216753
Hi Thorsten wearing-the-regression-hat, 🙂
I'm not the maintainer of iwlwifi anymore, so I'm adding the new
maintainer here, Gregory Greenman.
Gregory, can you take a look?
> > It looks like the self-managed regulatory information is causing the 6ghz band to be disabled on my AX211 (in the US).
> > iw reg get shows no 6ghz bands (output at the bottom).
> >
> > $ sudo iw phy0 channel
> > ...
> > Band 4:
> > * 5955 MHz [1] (disabled)
> > * 5975 MHz [5] (disabled)
> > * 5995 MHz [9] (disabled)
> > ....(continues with all disabled
> > * 7115 MHz [233] (disabled)
> > ...
> >
> > I was able to narrow this down to having been introduced during the 5.16 development window, as 5.15.79 linux-stable kernel works and the 5.16.12 does
> > not (earlier builds of 5.16 kernel fail to boot on my machine for some reason).
> >
> > I found https://community.frame.work/t/kernel-5-16-6ghz-disabled-ax210/15675/5
> > and they imply that this regression was introduced by
> > 698b166ed3464e1604a0e6a3e23cc1b529a5adc1
> > I haven't independently verified this commit as the definitive issue.
>
> You authored 698b166ed346 ("iwlwifi: mvm: read 6E enablement flags from
> DSM and pass to FW"). As it is a regressions is ideally should be dealt
> with. But this area in tricky due to the legal implications. Hence I
> wonder: is there anything we can do about this, or is this simply a case
> where we have to bite the bullet and live with this regression?
>
> Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
>
> P.S.: As the Linux kernel's regression tracker I deal with a lot of
> reports and sometimes miss something important when writing mails like
> this. If that's the case here, don't hesitate to tell me in a public
> reply, it's in everyone's interest to set the public record straight.
next prev parent reply other threads:[~2022-12-01 11:33 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-01 10:14 [regression] Bug 216753 - 6e 6 ghz bands are disabled since 5.16 on intel ax211 Thorsten Leemhuis
2022-12-01 11:33 ` Coelho, Luciano [this message]
2022-12-02 15:37 ` Dave Chiluk
2022-12-02 16:02 ` Thorsten Leemhuis
2022-12-02 16:46 ` Marcel Holtmann
2022-12-02 17:18 ` Dave Chiluk
2022-12-02 17:42 ` Maxime Bizon
2022-12-04 9:37 ` Thorsten Leemhuis
2022-12-20 13:16 ` Maxime Bizon
2023-01-03 19:48 ` Dave Chiluk
2022-12-02 17:46 ` Marcel Holtmann
2022-12-05 16:35 ` Dave Chiluk
2023-01-03 17:37 ` Dave Chiluk
2023-01-04 8:50 ` Coelho, Luciano
2023-01-05 6:15 ` Greenman, Gregory
2023-01-06 15:37 ` Dave Chiluk
2023-01-19 14:09 ` Greenman, Gregory
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