24.04: won't wake up from power-save/power-down

[Josef Wolf]

On Thu, May 30, 2024 at 12:39:56PM +0000, Peter Hutchison via ubuntu-users wrote:
> 
> >       Where can I find a page explaining which packages are needed to properly support power management?
> Power Management support is built into drivers and that is support via the Linux Kernel, so you need to check your kernel version and which drivers are installed.
> See this article for more information: https://www.kernel.org/doc/html/v4.19/driver-api/pm/devices.html

This seems to be targete to driver developers and is not of much help in
trouble-shooting power management problems for people who are not kernel
developers.

So to sum up:

Problem: whenever sleeping mode is entered, laptop won't wake up anymore. No
mater whether sleep is activated by closing the lid or by waiting for a while
when system is idle on battery. Only option is holding power button for a long
time for a hard power-off.

This laptop (Fujitsu celsius h730) had no such problems with ubuntu-18.04
which was previously installed on it.

- BIOS is newest available (1.22)
- same problems even with ubuntu-24.04-desktop-amd64.iso with default boot
  into in live mode

Any hints how to rack this down?

-- 
Josef Wolf
jw at raven.inka.de