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From: Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>
To: Bagas Sanjaya <bagasdotme@gmail.com>
CC: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Linux x86
 Platform Drivers <platform-driver-x86@vger.kernel.org>, Linux Regressions
	<regressions@lists.linux.dev>, Linux Stable <stable@vger.kernel.org>, Andy
 Shevchenko <andriy.shevchenko@linux.intel.com>,
	=?iso-8859-1?Q?Ilpo_J=E4rvinen?= <ilpo.jarvinen@linux.intel.com>, Klara Modin
	<klarasmodin@gmail.com>, Hans de Goede <hdegoede@redhat.com>,
	"danilrybakov249@gmail.com" <danilrybakov249@gmail.com>
Subject: Re: Fwd: Continuous ACPI errors resulting in high CPU usage by
 journald
Thread-Topic: Fwd: Continuous ACPI errors resulting in high CPU usage by
 journald
Thread-Index: AQHaaVYdGLK+hvmWCEOd4DEwa6IszrEd9BCA
Date: Tue, 27 Feb 2024 09:57:28 +0000
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On Feb 27, 2024 / 15:22, Bagas Sanjaya wrote:
> Hi,
>=20
> On Bugzilla, danilrybakov249@gmail.com reported stable-specific, ACPI err=
or
> regression that led into high CPU temperature [1]. He wrote:

Thanks for the report, and sorry for the trouble.

>=20
> > Overview:
> >=20
> > After updating from lts v6.6.14-2 to lts v6.6.17-1 noticed high CPU tem=
perature and lag. After running htop noticed that journald was using 30-60%=
 of CPU. Afterwards, tried switching to stable, or lts v6.6.18-1, but encou=
ntered the same issue.
> >=20
> > Running journalctl -f gives these lines over and over again:
> >=20
> > Feb 19 21:09:12 danirybe kernel: ACPI Error: Could not disable RealTime=
Clock events (20230628/evxfevnt-243)
> > Feb 19 21:09:12 danirybe kernel: ACPI Error: No handler or method for G=
PE 08, disabling event (20230628/evgpe-839)
> > Feb 19 21:09:12 danirybe kernel: ACPI Error: No handler or method for G=
PE 0A, disabling event (20230628/evgpe-839)
> > Feb 19 21:09:12 danirybe kernel: ACPI Error: No handler or method for G=
PE 0B, disabling event (20230628/evgpe-839)
> > Feb 19 21:09:12 danirybe kernel: ACPI Error: No installed handler for f=
ixed event - PM_Timer (0), disabling (20230628/evevent-255)
> > Feb 19 21:09:12 danirybe kernel: ACPI Error: No installed handler for f=
ixed event - PowerButton (2), disabling (20230628/evevent-255)
> > Feb 19 21:09:12 danirybe kernel: ACPI Error: No installed handler for f=
ixed event - SleepButton (3), disabling (20230628/evevent-255)
> >=20
> > My system info:
> >=20
> > Laptop model: ASUS VivoBook D540NV-GQ065T
> > OS: Arch Linux x86_64
> > Kernel: 6.6.14-2-lts
> > WM: sway
> > CPU: Intel Pentium N420 (4) @ 2.500GHz

I think this CPU is in Goldmont microarchitecture group. The group is handl=
ed
in a bit unique way in drivers/platform/x86/p2sb.c. I guess the commit affe=
cted
handling of P2SB resource on machines with that architecture.

> > GPU1: Intel Apollo Lake [HD Graphics 505]
> > GPU2: NVIDIA GeForce 920MX
> >=20
> > I've pinned down the commit after which the problem occurs:
> >=20
> > 847e1eb30e269a094da046c08273abe3f3361cf2 is the first bad commit
> > commit 847e1eb30e269a094da046c08273abe3f3361cf2
> > Author: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
> > Date:   Mon Jan 8 15:20:58 2024 +0900
> >=20
> >     platform/x86: p2sb: Allow p2sb_bar() calls during PCI device probe
> >    =20
> >     commit 5913320eb0b3ec88158cfcb0fa5e996bf4ef681b upstream.
> >=20
> > <snipped>...
>=20
> See Bugzilla for the full thread.
>=20
> Thanks.
>=20
> [1]: https://bugzilla.kernel.org/show_bug.cgi?id=3D218531

I do not have access to the hardware. As I commented on the bugzilla link a=
bove,
I would like ask help for debug.