Date: Thu, 16 Apr 2026 17:29:52 +0000 From: Lorenzo Salvadore <salvadore@FreeBSD.org> To: doc-committers@FreeBSD.org, dev-commits-doc-all@FreeBSD.org Cc: Aymeric Wibo <obiwac@FreeBSD.org> Subject: git: 8a67c6b1fb - main - Status/2026Q1/suspend.adoc: Add report Message-ID: <69e11c90.339c0.7cfdc900@gitrepo.freebsd.org>
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The branch main has been updated by salvadore: URL: https://cgit.FreeBSD.org/doc/commit/?id=8a67c6b1fb6be7f30b6b0a1aa35af9902bc02849 commit 8a67c6b1fb6be7f30b6b0a1aa35af9902bc02849 Author: Aymeric Wibo <obiwac@FreeBSD.org> AuthorDate: 2026-04-13 05:07:46 +0000 Commit: Lorenzo Salvadore <salvadore@FreeBSD.org> 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 new file mode 100644 index 0000000000..e55d61869f --- /dev/null +++ b/website/content/en/status/report-2026-01-2026-03/suspend.adoc @@ -0,0 +1,29 @@ +=== 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 <obiwac@FreeBSD.org> + +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 Foundationhome | help
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