git: 8a67c6b1fb - main - Status/2026Q1/suspend.adoc: Add report

The branch main has been updated by salvadore:

URL: https://cgit.FreeBSD.org/doc/commit/?id=8a67c6b1fb6be7f30b6b0a1aa35af9902bc02849

commit 8a67c6b1fb6be7f30b6b0a1aa35af9902bc02849
Author:     Aymeric Wibo <[email protected]>
AuthorDate: 2026-04-13 05:07:46 +0000
Commit:     Lorenzo Salvadore <[email protected]>
CommitDate: 2026-04-16 17:29:30 +0000

    Status/2026Q1/suspend.adoc: Add report
    
    Pull Request:   https://github.com/freebsd/freebsd-doc/pull/652
---
 .../en/status/report-2026-01-2026-03/suspend.adoc  | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/website/content/en/status/report-2026-01-2026-03/suspend.adoc b/website/content/en/status/report-2026-01-2026-03/suspend.adoc
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+=== Suspend/Resume Improvements
+
+Links: +
+link:https://obiw.ac/s0ix/[Blog] URL: link:https://obiw.ac/s0ix/[] +
+link:https://youtu.be/RCjPc4X2Edc[BSDCan talk on s2idle/S0ix] URL: https://youtu.be/RCjPc4X2Edc[] +
+link:https://people.freebsd.org/~obiwac/s0ix/[Sleep testing image] URL: https://people.freebsd.org/~obiwac/s0ix/[] +
+link:https://github.com/obiwac/freebsd-s0ix/pull/15[Working branch] URL: link:https://github.com/obiwac/freebsd-s0ix/pull/15[]
+
+Contact: obiwac <[email protected]>
+
+Suspend-to-idle and support for S0ix sleep is in the process of being added to FreeBSD.
+
+This will allow modern Intel and AMD laptops, some of which do not support ACPI S3 sleep, to enter low power states to increase battery life.
+
+Most revisions have now been committed at this point, including the new acpi_spmc driver and s2idle support.
+The only remaining things to land are USB4 suspend support and the s2idle loop (but that requires some more discussion and investigation).
+See revisions link:https://reviews.freebsd.org/D52861[D52861] and link:https://reviews.freebsd.org/D54410[D54410] respectively.
+
+Many bugs have been fixed, but there still is an issue where the system will sometimes lock up a few seconds after resuming.
+This was narrowed down to the NVMe drive not waking correctly after being suspended -- still requires further investigation.
+
+Work on an Intel PMC driver has started: link:https://reviews.freebsd.org/D54881[D54881]
+This already allows for reading residency in the deepest possible S0ix state on Intel CPUs.
+
+Work has started on a new generic power management interface: link:https://reviews.freebsd.org/D55508[D55508]
+This is needed as s2idle is not an ACPI power state, and the only (modern) mechanism for power transition requests is the ACPI ioctl interface.
+It has not yet landed because we might end up changing or even removing the distinction between sleep types and sleep state transitions.
+
+Sponsor: The FreeBSD Foundation