Bug#985150: systemd-udevd is trying read from unused module acpi-cpufreq

[Michael Biebl]

Am 13.03.21 um 21:01 schrieb Anonimno:

On Sat, 2021-03-13 at 20:42 +0100, Michael Biebl wrote:

Control: tags -1 + moreinfo

Am 13.03.2021 um 18:14 schrieb Anonimno:

on almost every boot after some usage of my Thinkpad 470 with
Buster
installation and kernel 5.9 from backports following error message
appears in
the logs

systemd-udevd[402]: could not read from
'/sys/module/acpi_cpufreq/initstate':
No such device.

This laptop uses intel_pstate driver for frequency changes, so the
error is not
relevant?

Is this a question or bug report? If the latter, please provide a
bit
more details. I'm not sure what to do with it.

Michael

Hi Michael,

thank you for a fast response.

The default Debian kernel from backports is using the built-in driver
intel_pstate driver for Intel i5 CPU, so systemd-udevd should look for
the frequency information there and not in the not used module
acpi_cpufreq.

systemd-udevd does not care about the "frequency information".

As said, this bug is not really actionable without more information.

Maybe the error message above is just a result of the (wrong) cpufreq driver being (auto)loaded. In which case, this is more likely to be a kernel issue.

OpenPGP_signature
Description: OpenPGP digital signature