From: Thorsten Leemhuis <email@example.com>
To: Heikki Krogerus <firstname.lastname@example.org>
Cc: Mattia Orlandi <email@example.com>,
Hans de Goede <firstname.lastname@example.org>,
Subject: [regression] Bug 216426 - USB-C port is incorrectly reporting that it's powered when Dell XPS 15-9500 is unplugged
Date: Thu, 1 Sep 2022 11:07:33 +0200 [thread overview]
Message-ID: <email@example.com> (raw)
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:
> Mattia Orlandi 2022-08-29 17:04:21 UTC
> - 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
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
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.
next reply other threads:[~2022-09-01 9:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-01 9:07 Thorsten Leemhuis [this message]
2022-09-26 14:25 ` [regression] Bug 216426 - USB-C port is incorrectly reporting that it's powered when Dell XPS 15-9500 is unplugged Thorsten Leemhuis
2022-09-30 11:20 ` [regression] Bug 216426 - USB-C port is incorrectly reporting that it's powered when Dell XPS 15-9500 is unplugged #forregzbot Thorsten Leemhuis
2022-10-27 10:37 ` Thorsten Leemhuis
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