From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D208523AB9D for ; Wed, 22 Apr 2026 14:04:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776866697; cv=none; b=eSUtHGtJdgQXZ8YGr5Dd9UmyAtLZPnHPasVzwm8hiIEZ/RcAnon6PoyL8XppGdqbgIbDlxUB3BuAvWopCldyNzmAVU3m2QDVOP+mta+Z2DDCyPmrs+hZaXvK4do9Q5XzPmqIjk58/VxZwFP99HIavDAAl3CLJJzrVFEr/uA9OhE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776866697; c=relaxed/simple; bh=HR5sbDWr3FmNz2JYBR0bAktt5I7s7gqaPwSYJhVsr90=; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject: To:Cc:Content-Type; b=KQGtt6ra14h6DXx/nFWSNCL5Cw9anHVKgTUz/YTQLvJgWq8ITigbFod3IK21afw6t9AKZpBZEbo9PIuaqEtbOWpRPKKVb9NeV74YD8yO9/SMw0pRLqlCeOmZpBzKFSLKNplRva51Sx6YKGBlBgo/6kM7NGOZcHNR15hjI0mlJyY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PpUPrBJZ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PpUPrBJZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 99CE9C2BCB9 for ; Wed, 22 Apr 2026 14:04:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776866697; bh=HR5sbDWr3FmNz2JYBR0bAktt5I7s7gqaPwSYJhVsr90=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=PpUPrBJZYzR/mpWTBUH0SfDiqzR15YdUbvvZN6i9YXoC0FGrYDfaKgv7DvGewgmoi nhcQRbrRbPcmSnz3iQaLAPqQEC9bMnN6aDf8XK2K6e2w6iq7ZOUZhzzQ/6cWNZ/rOq 3W2voOTPDTbd6ZEwH024mSCIqHylEsoJNwDSXk5jLyFAp5f9S3LqbpaNV92OXrDt4z VlU3vIgwfR5wdJebqLpy/VQJIWlYCu8iBcYf+gJG0zLLC4CZx5PC8210dPE5jAuV1I p3aQHWvvh+ZUjP7R1vssOkJXXr3hd6R2FSlVjPcmkr9opkEg9iPBN30DQwsxmkV371 jGQnVw3Lij2fQ== Received: by mail-lf1-f49.google.com with SMTP id 2adb3069b0e04-5a0ff30b240so8341027e87.0 for ; Wed, 22 Apr 2026 07:04:57 -0700 (PDT) X-Forwarded-Encrypted: i=1; AFNElJ9WU6eWukNgDYOMXFC6aPWDDNNw14iPC6SLqGQid5Tb0N2beWQe15/sTPzek6V830SULUwz7zn0t0VaXWk=@vger.kernel.org X-Gm-Message-State: AOJu0Yx2ECrGgSOX1qWmerh5KmlwCu/JeWzVaos7PvVDYW3gQDnNuY89 40/S5CYzr6ZzCs2H6TGs12m7JizzKE0VZ5Jrfso2ABrNOhgPfOLlKPaTJxIiEAflRGAoLE+FUlG Z7CyOomLiGStoSXVesg7xgC7pBMT4mos= X-Received: by 2002:a05:6512:31d4:b0:5a2:c404:8383 with SMTP id 2adb3069b0e04-5a4172ea739mr8516959e87.44.1776866695907; Wed, 22 Apr 2026 07:04:55 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <12879883.O9o76ZdvQC@rafael.j.wysocki> <168591776860440@mail.yandex.ru> In-Reply-To: From: "Rafael J. Wysocki" Date: Wed, 22 Apr 2026 16:04:43 +0200 X-Gmail-Original-Message-ID: X-Gm-Features: AQROBzDioQ0npVI7emEruPtTw51gXKSszk41v1gDHgj-gaRAh5k4lp4IR3x9tpQ Message-ID: Subject: Re: Pressing the power button causes the device to freeze completely To: Evgeny Sagatov Cc: "Rafael J. Wysocki" , regressions@lists.linux.dev, linux-acpi@vger.kernel.org, Thorsten Leemhuis , LKML , Wysocki Rafael J Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, Apr 22, 2026 at 3:34=E2=80=AFPM Evgeny Sagatov wrote: > > # grep -r . /sys/devices/system/cpu/cpufreq/ > /sys/devices/system/cpu/cpufreq/schedutil/rate_limit_us:240 > /sys/devices/system/cpu/cpufreq/policy2/scaling_min_freq:2000000 > /sys/devices/system/cpu/cpufreq/policy2/scaling_available_governors:perfo= rmance > schedutil There are two cpufreq governors to choose from. Have you decided to compile out the other ones on purpose? It might be useful to compile the powersave governor in and try to switch over to it (on all CPUs) before pressing the power button (without any patches applied). > /sys/devices/system/cpu/cpufreq/policy2/freqdomain_cpus:2 > /sys/devices/system/cpu/cpufreq/policy2/scaling_governor:schedutil > /sys/devices/system/cpu/cpufreq/policy2/cpuinfo_max_freq:2834000 > /sys/devices/system/cpu/cpufreq/policy2/scaling_available_frequencies:283= 4000 > 2000000 The frequency scaling on this CPU is quite limited (only 2 states to choose from). > /sys/devices/system/cpu/cpufreq/policy2/related_cpus:2 > /sys/devices/system/cpu/cpufreq/policy2/scaling_cur_freq:2000088 Interestingly, this number doesn't match the available choices (maybe due to a rounding error or similar). > /sys/devices/system/cpu/cpufreq/policy2/scaling_setspeed: > grep: /sys/devices/system/cpu/cpufreq/policy2/stats/reset: Access denied > /sys/devices/system/cpu/cpufreq/policy2/stats/trans_table: From : T= o > /sys/devices/system/cpu/cpufreq/policy2/stats/trans_table: : > 2834000 2000000 > /sys/devices/system/cpu/cpufreq/policy2/stats/trans_table: 2834000: > 0 762 > /sys/devices/system/cpu/cpufreq/policy2/stats/trans_table: 2000000: > 761 0 > /sys/devices/system/cpu/cpufreq/policy2/stats/total_trans:1523 > /sys/devices/system/cpu/cpufreq/policy2/stats/time_in_state:2834000 6606 > /sys/devices/system/cpu/cpufreq/policy2/stats/time_in_state:2000000 24873= 3 > /sys/devices/system/cpu/cpufreq/policy2/affected_cpus:2 > /sys/devices/system/cpu/cpufreq/policy2/scaling_max_freq:2834000 > /sys/devices/system/cpu/cpufreq/policy2/cpuinfo_transition_latency:160000 > /sys/devices/system/cpu/cpufreq/policy2/scaling_driver:acpi-cpufreq > /sys/devices/system/cpu/cpufreq/policy2/cpuinfo_min_freq:2000000 > /sys/devices/system/cpu/cpufreq/policy2/bios_limit:2834000 The fact that acpi-cpufreq is the scaling driver may be related to the power button issue in principle. I'm still going to send you another debug patch for the button driver thoug= h.