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 949F333EB10 for ; Sat, 10 Oct 2026 09:20:25 +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=1791624025; cv=none; b=iik2fhRucBQ88wpA03Hl5LpAo3bBP8UCoOOxEhjYwFQs8eYu6655eX1Ijp+AiyD1UmmM6grUCs/gMBH8BERPxzndyXSiHNxE4KTAeAPRSItiU2Hmzxhzl7Yrj9ZjWG67mUUrmX1VWz8Rh+3+0+4D8gX7g4MuhemTG/Hmcj9IMiI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791624025; c=relaxed/simple; bh=tYZliDvwtu0U+4DD79RcRm2RmgJb5/PV/kPAItnAgwo=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=ItK07sU7L0ZbY3pum/8JjvDMqmYbCsNVbPV9p+8Rg2gyeHREJ2W5CGcFEDq7kIW0q7wYK1ek7lsh1ZZQXhBp3oOvzRVpQq059rFKE6dJcyTvrIy+uRlYw8LOq9g9ZOoIp5BAmKgmEoEbKLXNX//o+InVIa8GezCayDJZoe24AUM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SE11l6jx; 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="SE11l6jx" Received: by smtp.kernel.org (Postfix) with ESMTPS id 408B9C2BCB9 for ; Sat, 10 Oct 2026 09:20:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1791624025; bh=tYZliDvwtu0U+4DD79RcRm2RmgJb5/PV/kPAItnAgwo=; h=From:To:Subject:Date:In-Reply-To:References:From; b=SE11l6jxuWX/5cZFTbuFYv6lYE2j4kEgd9ClPjcHq3PtqJQ9by8J1kEpkBDgbwg1l HboTg/UOMZRaMTKKUQ0I9pxo4bc7SUMJ9XR4aGyok56gZv8tcjhCZiEpW3ynpfjo2E DWAIHMXD+EAKIa1I7LvXmoU9ujYvWVRnD3BIQBw/Jp39uELD5unASSEiwjRjITvDQZ YrUtAtJVkYumL+eCAIZ8O/GFqTVUwI5omv0c/szTKRmJjak/cf2YZqaX9MHdBv3ljd YSznXJIgpTJtJaFutfLHVwWhdVk6f4QFTCdWkNle7zJ4n7n3S+X/SUZKB3P3VhTaQC LQRvzWQiPLK7w== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 0D7C7C3279F; Sat, 10 Oct 2026 09:20:25 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 222021] Not charging via USB C after Kernel update "underpowered" Dell XPS + workaround Date: Sat, 10 Oct 2026 09:20:24 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: USB X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: splint.em85@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: 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-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D222021 --- Comment #6 from SpliNter (splint.em85@gmail.com) --- Tested mainline 7.3.0-rc6-1 (Arch AUR linux-mainline, unpatched, default config) Result: no change compared to 7.2.9. - dmesg: "ucsi_acpi USBC000:00: unknown error 0" followed by "UCSI_GET_PDOS failed (-5)" at boot (9.2 s) and again when plugging in AC while running (3= 96.2 s, coincides with the AC event at 396.3 s). - The desktop battery status flaps on plug-in: plugged in -> not charging -> charging (3 changes). BAT0 ends up as "Charging". - udevadm monitor --subsystem-match=3Dpower_supply: 4 changes of ucsi-source-psy-USBC000:003 within ~6 s, 1x AC, 2x BAT0 (identical to 7.2.9= ). udevadm monitor --subsystem-match=3Dpower_supply (AC plugged in at ~396 s): KERNEL[394.326132] change .../USBC000:00/power_supply/ucsi-source-psy-USBC000:003 KERNEL[394.869343] change .../USBC000:00/power_supply/ucsi-source-psy-USBC000:003 KERNEL[396.322197] change .../ACPI0003:00/power_supply/AC KERNEL[396.382409] change .../PNP0C0A:00/power_supply/BAT0 KERNEL[397.542787] change .../USBC000:00/power_supply/ucsi-source-psy-USBC000:003 KERNEL[399.928510] change .../PNP0C0A:00/power_supply/BAT0 KERNEL[400.631229] change .../USBC000:00/power_supply/ucsi-source-psy-USBC000:003 dmesg: [ 9.247627] ucsi_acpi USBC000:00: unknown error 0 [ 9.247630] ucsi_acpi USBC000:00: UCSI_GET_PDOS failed (-5) [ 396.214445] ucsi_acpi USBC000:00: unknown error 0 [ 396.214454] ucsi_acpi USBC000:00: UCSI_GET_PDOS failed (-5) Next I will test 7.3.0-rc6 with the "Reset if Error" patch (attachment 3108= 69). --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=