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Date: Sun, 18 Oct 2026 15:35:31 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Bob Anderson <kernel@ametros.net>
Cc: Wolfgang Walter <linux@stwm.de>, stable@vger.kernel.org,
	patches@lists.linux.dev,
	"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
	Sasha Levin <sashal@kernel.org>
Subject: Re: regression 6.18.57: acpi power button vanished in machines
 running in qemu
Message-ID: <2026101813-doorstop-hyphen-614c@gregkh>
References: <5fe757e7aa54c38df3525d313598db99@stwm.de>
 <2026101834-parchment-reps-0bee@gregkh>
 <atSdI7buRErdF1jZ@ametros.net>
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In-Reply-To: <atSdI7buRErdF1jZ@ametros.net>

On Sun, Oct 18, 2026 at 11:19:15AM +0100, Bob Anderson wrote:
> On Sun, Oct 18, 2026 at 08:48:03AM +0200, Greg Kroah-Hartman wrote:
> > On Sat, Oct 17, 2026 at 07:26:54PM +0200, Wolfgang Walter wrote:
> > > 
> > > since 6.18.57 there is no acpi power button any more in virtual qemu based
> > > machines (as far as I can see model doesn't matter).
> > 
> > Can you use 'git bisect' to find the offending change?  Does this also
> > happen in the latest 7.2.y and 7.3-rc releases?
> 
> Reverting 38c79dacc8063ff8a0d75ce2a900fbaff82ad94c makes the problem
> go away.
> 
> Reverting cleanly required reverting c85f325d9ec3116b0d4ee9d5b76c26aea0ad5ce0
> and 78677084cd09001c3c815aab80c59708130a65d7 too.
> 
> FWIW we also have this problem on hardware (various Dell servers): the
> power button and "graceful shutdown" via iDRAC no longer work. We're using
> a custom ACPI daemon that looks specifically for ACPI power button events.

is this an issue in 7.3-rc as well?