From: "Ali Ahmet Memiş" <aliamemis@disroot.org>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: johannes.goede@oss.qualcomm.com, Len Brown <lenb@kernel.org>,
Armin Wolf <W_Armin@gmx.de>,
Charis Stratakis <c.stratakis@proton.me>,
linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org,
regressions@lists.linux.dev,
Mark Pearson <mpearson-lenovo@squebb.ca>,
linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] ACPI: battery: Re-read battery information in the complete callback
Date: Wed, 14 Oct 2026 00:05:46 +0300 [thread overview]
Message-ID: <20261013210609.8117-1-aliamemis@disroot.org> (raw)
In-Reply-To: <CAJZ5v0isCM3K3U6HSdDnvXzBX41AgQMFYxqLx3KvMA0W_91-ew@mail.gmail.com>
On Tue, Oct 13, 2026 at 07:20:55PM +0200, Rafael J. Wysocki (Intel) wrote:
> Also, we don't actually know how many "bad" cases there are and so far
> we have identified a few.
I wrote a script that extracts the ACPI tables from all 208 BIOS
packages in Lenovo's ThinkPad catalog (370 models) and flags methods
that switch the EC page selector (HIID) without BATM while other methods
use it under BATM, and checked the flagged ones by hand. Two BIOSes do
it both with \GTST from _TMP: P1 Gen2 / X1 Extreme Gen2 and P53 / P73.
Apart from those, NVPS on T450 / T450s does it from the NVIDIA GPS
_DSM, which only the out-of-tree NVIDIA driver evaluates. This doesn't
cover races like the UCSI one in bko221065.
FWIW, the exclusive variant is done. With it the emulated \GTST breaks
neither _BIX after resume nor _BST at run time (0 of 5 and 0 of 1074),
and with only the _TMP side converted both still break (5 of 5 and 421
of 424).
prev parent reply other threads:[~2026-10-13 21:06 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <37N_jFulf7n-Z55NfKfE71C_wVPxYvZ0xD_iRUg2fXu7TypDiF5PStQ6siSfVBih6fThg5WoPes8U5ZQpfVm_teMFcUGXFxz2DdMbfSWuws=@proton.me>
2026-10-12 22:46 ` Ali Ahmet Memiş
2026-10-12 22:58 ` Ali Ahmet Memiş
2026-10-13 1:40 ` Charis Stratakis
2026-10-13 5:34 ` Ali Ahmet Memiş
2026-10-13 9:33 ` johannes.goede
2026-10-13 11:58 ` Rafael J. Wysocki (Intel)
2026-10-13 12:30 ` Ali Ahmet Memiş
2026-10-13 13:12 ` Rafael J. Wysocki (Intel)
2026-10-13 13:36 ` johannes.goede
2026-10-13 17:20 ` Rafael J. Wysocki (Intel)
2026-10-13 21:05 ` Ali Ahmet Memiş [this message]
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