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 03DA5466B59 for ; Mon, 11 May 2026 17:45:05 +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=1778521506; cv=none; b=R/R9XmMgChwE0VKiRv9BtVVvm8wT2dTeODWqIQYT7hVEO2nrZzIkhJLoK1qkOVztHUyBj9D6ZruqFIMVa1PA+s5/0jGz1HfUeskFrYcW4RKTFnWjKA/FBNqccHAendh+bdN8inPc7u07wCGQBYGp5Bzkk4bjEy3prlCWcqiPKqc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778521506; c=relaxed/simple; bh=j0xQmkUIfpgWG4NeqGarVjzRbqQTwLyRuCy9jr98dR0=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=FSTvKdFCuzR0o4yvj7BfvLwqqI44jVhNvJgtQC/H/DuTOtwq2eZt3gEvxy/r4LrHgVnRU8KYRSlNQRO8tB0BwxuzfYwG4gGRzQ8fYM04omKgNO0vpGy3shapcYbjXl42SbotADcUbrRaZ9umRHoiTMLoOR+To6ic9lufiDvtOdw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Qgjz+2G6; 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="Qgjz+2G6" Received: by smtp.kernel.org (Postfix) with ESMTPS id 95F23C2BCB0 for ; Mon, 11 May 2026 17:45:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778521505; bh=j0xQmkUIfpgWG4NeqGarVjzRbqQTwLyRuCy9jr98dR0=; h=From:To:Subject:Date:From; b=Qgjz+2G6eUp43FpueeeSKkwx3MmyUEb86WE6/W89tNhYi6Dhx0yyRkC3lt2LcPPxO U+Cs68KoijTXR4VrXpzK7AiU5lRee8O1BK4w/Qu9nkRYssl0qoDTuobHVbcpkyNwtK eefU4lM/SdwypnQTnk63Li4C60g+8yGRphW00QqiwhPNxWUsJZsaGzZ8GmZoT/MDpW rAUgr3XB1CS/Kdhpsn62rHR4zXeTMHsH9PdEdGSGOv9MMnxwS1GcX7zo2P2tDzB0ux IrvTs2Zj4ahMmSMt4JZeAXrO9kFIS1yur90mqw0paKLudpPJTeHqssDwUnMuOQQ5uh pQYR3GFzB3ftA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 5C2C5C41612; Mon, 11 May 2026 17:45:05 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-pm@vger.kernel.org Subject: [Bug 221505] New: REGRESSION][amd_pstate] "EPP cannot be set under performance policy" (EBUSY) when switching to performance profile via PPD on 7.1 Date: Mon, 11 May 2026 17:45:03 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Power Management X-Bugzilla-Component: cpufreq X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: sergeyluashkov@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: linux-pm@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter cf_regression attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D221505 Bug ID: 221505 Summary: REGRESSION][amd_pstate] "EPP cannot be set under performance policy" (EBUSY) when switching to performance profile via PPD on 7.1 Product: Power Management Version: 2.5 Hardware: AMD OS: Linux Status: NEW Severity: normal Priority: P3 Component: cpufreq Assignee: linux-pm@vger.kernel.org Reporter: sergeyluashkov@gmail.com Regression: No Created attachment 310089 --> https://bugzilla.kernel.org/attachment.cgi?id=3D310089&action=3Dedit dmesg Hardware: ASUS TUF Gaming A14 (2026) FA401EA CPU: AMD Ryzen AI Max+ 932 (Strix Halo platform) Kernel: 7.1.0-mainline (including patches for Bugzilla #221310) Power Daemon: power-profiles-daemon 0.30 Description: On kernel 7.1, power-profiles-daemon fails to activate the "performance" profile. The D-Bus error returned is Code 26 (Device or resource busy). After enabling dynamic debug for the amd_pstate module (echo 'module amd_ps= tate +p' > /sys/kernel/debug/dynamic_debug/control), I captured the following re= ason for the failure in dmesg: [ 299.585428] amd_pstate: EPP cannot be set under performance policy Steps to Reproduce: Use a system with amd_pstate in active mode on kernel 7.1. Attempt to switch profile: powerprofilesctl set performance. Failed to communicate with power-profiles-daemon: g-io-error-quark: GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._g_2dio_2derror_2dquark.Code= 26: Failed to activate CPU driver 'amd_pstate': Error writing '/sys/devices/system/cpu/cpufreq/policy11/energy_performance_preference': Device or resource busy (26) The command fails, and dmesg logs: amd_pstate: EPP cannot be set under performance policy. Expected Result: The driver should allow setting the EPP value even if the policy is set to performance, or handle the transition gracefully without returning EBUSY to user-space daemons. Additional Context: This issue was observed on the new Strix Halo (Ryzen AI Max+) platform. The conflict between PPD's profile orchestration and the driver's internal state checks makes the "Performance" profile unusable via standard desktop tools (KDE/GNOME power settings). I can build and test custom patches on this hardware --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=