linux-kernel - Re: Regression: Inoperative bluetooth, Intel chipset, mainline kernel 6.6.2+

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Date:   Sun, 03 Dec 2023 13:17:50 +0100
From:   Oleksandr Natalenko <oleksandr@...alenko.name>
To:     Bagas Sanjaya <bagasdotme@...il.com>,
        Linux Bluetooth <linux-bluetooth@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "Kris Karas (Bug Reporting)" <bugs-a21@...nlit-rail.com>
Cc:     Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        Zach <zacheryvig@...look.com>,
        Paul Menzel <pmenzel@...gen.mpg.de>
Subject: Re: Regression: Inoperative bluetooth, Intel chipset,
 mainline kernel 6.6.2+

Hello.

On pátek 1. prosince 2023 9:19:04 CET Kris Karas (Bug Reporting) wrote:
> Bagas Sanjaya wrote:
> > Kris Karas (Bug Reporting) wrote:
> >> I have a regression going from mainline kernel 6.1.62 to 6.1.63, and also
> >> from kernel 6.6.1 to 6.6.2; I can bisect if patch authors can't locate the
> >> relevant commit.  In the most recent kernels mentioned, bluetooth won't
> >> function.
> > 
> > Then please do bisection; without it, nobody will look into this properly.
> 
> As only a few people are reporting this, it must be pretty 
> hardware-specific (or perhaps Kconfig/firmware specific).  I'll do a 
> bisect.  A bit too late here in Boston (03:00), and kiddo's birthday 
> "later today", so will probably get to this on the weekend.
> 
> > You may also want to check current mainline (v6.7-rc3) to see if this
> > regression have already been fixed.
> 
> Just tried 6.7.0-rc3, and it is also affected.

Does passing `btusb.enable_autosuspend=N` via a kernel cmdline help? [1]

[1] https://lore.kernel.org/lkml/5993222.lOV4Wx5bFT@natalenko.name/

> I hadn't git-pulled my linux-stable since May, so that gave me a good 
> chance to test the very latest.  :-)  And conveniently I'm now set for 
> the bisect.
> 
> Kris
> 
> 


-- 
Oleksandr Natalenko (post-factum)
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