On Fri, Dec 23, 2022 at 03:13:53PM -0600, Abel Abraham Camarillo Ojeda wrote: > On Fri, Dec 23, 2022 at 2:46 PM Abel Abraham Camarillo Ojeda < > acam...@verlet.org> wrote: > > > Forgot to mention I don't think this is a regression, just started to use > > hibernate/unhibernate more often lately. > > But I think I can reproduce this at least since 6.8 (the first that I > > installed to this machine) > > > >> > >> > >> But still this apply https://www.openbsd.org/report.html (point 2) > >> > > > > By doesn't work I mean: > > > > $ zzz > > Suspending system... > > $ (nothing happened) > > > > > real mem = 17021566976 (16233MB) > >> > avail mem = 16488275968 (15724MB) > >> > random: good seed from bootblocks > >> > mpath0 at root > >> > scsibus0 at mpath0: 256 targets > >> > mainbus0 at root > >> > bios0 at mainbus0: SMBIOS rev. 3.0 @ 0xb9908000 (58 entries) > >> > bios0: vendor LENOVO version "R0GET56W (1.56 )" date 08/31/2017 > >> > >> You should try > >> https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-l-series-laptops/thinkpad-l470/downloads/ds120327 > >> and see if problem is still present (of course good to have backup :-)) > >> > > > > yes, forgot about that. Will update bios and retry > > > > machine now with bios updated, can reproduce issue after 1 unhibernate, > dmesg right now at "zzz does nothing stage": >
1. acpi thread might be stuck as kettenis points out. to verify this, try a suspend (lowercase zzz) instead of a hibernate (capital ZZZ) when it gets stuck. If you can zzz but not ZZZ, then it's not the acpi thread. 2. more likely, IMO, is not being able to find a consecutive region in free memory to store the hibernate data structures. If memory gets fragmented, ZZZ will fail. It should print something to dmesg though, so check that. This matches your symptoms of "always works the first time but sometimes not on subsequent tries".
