Re: port-amd64/57930: ACPI suspend problems on Thinkpad X270

[Taylor R Campbell <riastradh%NetBSD.org@localhost>]

> Date: Mon, 12 Feb 2024 18:00:01 +0000 (UTC)
> From: projetos%jucara.org@localhost
> 
> ihidev0 at iic1 addr 0x38ihidev0: autoconfiguration error: failed to get HidDescriptorAddress: AE_NOT_FOUND

Can you share the full dmesg?

Can you share the output of `acpidump -dt'?  (It will be large, so if
you want to upload it somewhere we can download instead of sending it
through mail to gnats, that's fine.)

> Even The attempt to disable the device ihidev0 via the entry
> userconf=disable ihidev* in /boot.cfg does not result correct
> suspend to RAM.

Can you describe what happens when you try in this case?

Instead of `sysctl -w hw.acpi.sleep.state=3', can you try suspending
and resuming individual devices and device subtrees using drvctl(8)?

1. You can display the whole device tree with `drvctl -lt'.
2. Use `drvctl -S devN' to suspend devN and all its children.
3. Use `drvctl -Q devN' to resume devN and all its children.

Devices under pciN and usbN are usually of most interest for
suspend/resume.  For example, you might try:

sleep 1; drvctl -S usb0; sleep 1; drvctl -Q usb0

If that fails, drill down into `drvctl -lt usb0' and try suspending
and resuming other devices.  If that works, try usb1, usb2, ..., and
then pci0, pci1, ....

(The sleep here avoids potential issues with, e.g., anything handling
keyboard input while some devices are suspended, and running `sleep 1'
first ensures /usr/bin/sleep is paged in so the second `sleep 1'
doesn't have to wait for disk I/O in case the disk device itself is
suspended.)