T420 fan and Ubuntu 25.04
Dennis Yurichev <[email protected]> Fri, 6 Feb 2026 19:01:02 +0200
| Newsgroups | gmane.linux.hardware.thinkpad |
|---|---|
| Message-ID | <aYYdtnwgdrR1k6_e@tevatron2> |
Hi all! T420 + Ubuntu 24.04.2 LTS - I could write to /proc/acpi/ibm/fan for fan control. That worked. T420 + Ubuntu 25.04 - Now I get: ==================================== % cat fan_2.sh echo "level 2" > /proc/acpi/ibm/fan % sudo ./fan_2.sh ./fan_2.sh: 1: echo: echo: I/O error ==================================== Known issue (after upgrading)? _______________________________________________ Linux-Thinkpad mailing list -- [email protected] To unsubscribe send an email to [email protected]