From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from wp530.webpack.hosteurope.de (wp530.webpack.hosteurope.de [80.237.130.52]) (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 E9159A49 for ; Thu, 1 Sep 2022 09:07:40 +0000 (UTC) Received: from [2a02:8108:963f:de38:eca4:7d19:f9a2:22c5]; authenticated by wp530.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) id 1oTgAi-0002Lg-Io; Thu, 01 Sep 2022 11:07:36 +0200 Message-ID: Date: Thu, 1 Sep 2022 11:07:33 +0200 Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.2.0 Content-Language: en-US, de-DE From: Thorsten Leemhuis Cc: Mattia Orlandi , "regressions@lists.linux.dev" , LKML , Hans de Goede , "linux-usb@vger.kernel.org" To: Heikki Krogerus Subject: [regression] Bug 216426 - USB-C port is incorrectly reporting that it's powered when Dell XPS 15-9500 is unplugged Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1662023261;bdea5c64; X-HE-SMSGID: 1oTgAi-0002Lg-Io Hi, this is your Linux kernel regression tracker speaking. I noticed a regression report in bugzilla.kernel.org. As many (most?) kernel developer don't keep an eye on it, I decided to forward it: https://bugzilla.kernel.org/show_bug.cgi?id=216426 > Mattia Orlandi 2022-08-29 17:04:21 UTC > > System > ------ > - Dell XPS 15 9500 > - 5.19.4 kernel > > Problem description > ------------------- > Whenever I plug and then unplug my laptop from AC power using the USB-C port, the system thinks it is still plugged in (i.e., the KDE applet reports "Plugged in but still discharging"). > If I check in Dell's BIOS, it correctly reports when the power supply is plugged/unplugged; `acpi -V` also correctly shows `Adapter 0: off-line`. > > On the other hand, `upower -d` incorrectly reports `/org/freedesktop/UPower/devices/line_power_ucsi_source_psy_USBC000o002` as `online: yes`. > Moreover, `journalctl` reports `ucsi_acpi USBC000:00: ucsi_handle_connector_change: GET_CONNECTOR_STATUS failed (-110)`. > > I'm testing the LTS kernel (5.15.63) and the issue does not occur, so I assume it's a regression bug, possibly introduced in kernel 5.18 (I tried downgrading the kernel to version 5.18.16 and the issue was already present). See the ticket for more details. Apologies if I forwarded it to the wrong folks, I cover a lot of ground and thus sometimes get things wrong. :-/ BTW, I'd also like to add the report to the list of tracked regressions to ensure it's doesn't fall through the cracks in the end: #regzbot introduced: v5.15..v5.18 https://bugzilla.kernel.org/show_bug.cgi?id=216426 #regzbot ignore-activity Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) P.S.: As the Linux kernel's regression tracker I deal with a lot of reports and sometimes miss something important when writing mails like this. If that's the case here, don't hesitate to tell me in a public reply, it's in everyone's interest to set the public record straight.