5.1b2, configuring kernel for Thinkpad x20

[Marcin Kot]

Hi,

I have a Thinkpad x20 which is running 5.1-BETA2. I do have som problems
with the computer booting up at random with the GENERIC kernel, although all
boot-up options are disabled in the bios. This laptop has latest bios and
embedded controller software installed. I want to recompile the kernel, are
there any options I should be aware of to make acpi work correctly? I read
though that ACPI support is loaded dynamically during boot. After a random
boot, or after pressing the lid-switch it seems to hang and these messages
are displayed:

kernel: ACPI-0432: *** Error: Handler for [EmbeddedControl] returned
AE_ERROR
kernel: ACPI-1287: *** Error: Method execution failed
[\_SB_.PCI0.ISA_.EC__.AC__._PSR] (Node 0xc1f54560
), AE_ERROR

I've noticed that there are quite many sysctl settings which are
acpi-related.

regards
Martin Kot