Public bug reported:
Since upgrading to kernel 7.0.0-28-generic (and confirmed also in
7.0.0-30 and 7.0.0-31), my system no longer powers off cleanly. This is
a clear regression: kernel 6.17.0-40-generic works reliably on the exact
same hardware/install.
Hardware: Lenovo ThinkPad L14 Gen 1 AMD (Type 20U5/20U6), AMD Ryzen 5 PRO
4650U, BIOS R19ET56W (1.40).
Distro: Linux Mint (based on Ubuntu 24.04 / noble, HWE kernel stack)
Symptom: When shutting down, all systemd services stop cleanly and the
log reaches "Reached target poweroff.target", "Syncing filesystems and
block devices", "Sending SIGTERM to remaining processes" - then the
journal stops. The screen goes black, but the fans keep spinning and the
power LED stays on. The system never actually powers off; it requires a
hard power-button hold to turn off.
Tested and confirmed:
- Broken: 7.0.0-28-generic, 7.0.0-30-generic, 7.0.0-31-generic
- Working: 6.17.0-40-generic, 6.17.0-35-generic (both shut down cleanly every
time)
No custom kernel parameters were needed on the working kernels (default
"quiet splash"). Testing with acpi=force / reboot=acpi / acpi_osi=Linux
on the broken kernel did not help and even caused reboot to hang as
well.
This looks like a regression in ACPI/power-management handling
introduced somewhere between 6.17.0-40 and 7.0.0-28.
Steps to reproduce:
1. Boot into kernel 7.0.0-31-generic (or 7.0.0-28/30)
2. Run "sudo poweroff" or shut down via the desktop menu
3. Observe: screen turns black, fans keep running, power LED stays on, system
never actually powers off
Expected result: System powers off completely.
Actual result: System hangs indefinitely until a hard power-button shutdown is
performed.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2167015
Title:
System hangs on poweroff since kernel 7.0.0 series (regression) on
ThinkPad L14 Gen1 AMD
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