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Groups > linux.debian.kernel > #92243

Bug#1135599: linux-image-6.1.0-45-amd64:suspend to disk causes lockup on laptop

Cross-posted to 2 groups.

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Package: src:linux
Version: 6.1.170-1
Severity: important


After a bookworm upgrade today to:
Linux hostname 6.1.0-45-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.170-1 (2026-04
-30) x86_64 GNU/Linux

Suspend to disk breaks.  I have:

- tested 'echo disk >/sys/power/state' directly, to bypass all other
  scripts/code

- turned on printk @ 8, as per kernel.org suggestions, with no additional
  output on console

Upon attempting to suspend to disk, the system goes into a semi-locked up
state.  It's clearly on, but eating CPU, and unwakeable.

Note that this laptop has been rock-solid with sleep to disk for 2+
years, through bullseye, into bookworm, and all related kernel changes.

.170/45 breaks it, .164/44 and prior are flawless.


I've looked at console output, and both seem mostly identical, with no
discernible pattern differences, until the console is suspended, eg:

# echo disk >/sys/power/state
[  144.328638] PM: hibernation: hibernation entry
[  144.329110] (NULL device *): firmware: direct-loading firmware i915/adlp_dmc_ver2_16.bin
[  144.329275] (NULL device *): firmware: direct-loading firmware i915/adlp_guc_70.bin
[  144.329356] (NULL device *): firmware: direct-loading firmware iwlwifi-so-a0-gf-a0.pnvm
[  144.329372] (NULL device *): firmware: direct-loading firmware regulatory.db
[  144.329404] (NULL device *): firmware: direct-loading firmware regulatory.db.p7s
[  144.329421] (NULL device *): firmware: direct-loading firmware intel/ibt-0040-0041.ddc
[  144.329447] (NULL device *): firmware: direct-loading firmware intel/sof-tplg/sof-hda-generic-2ch.tplg
[  144.329493] (NULL device *): firmware: direct-loading firmware i915/tgl_huc.bin
[  144.329936] (NULL device *): firmware: direct-loading firmware intel/ibt-0040-0041.sfi
[  144.330138] (NULL device *): firmware: direct-loading firmware iwlwifi-so-a0-gf-a0-72.ucode
[  144.345769] Filesystems sync: 0.015 seconds
[  144.347015] Freezing user space processes
[  144.348632] Freezing user space processes completed (elapsed 0.001 seconds)
[  144.348673] OOM killer disabled.
[  144.358776] PM: hibernation: Preallocating image memory
[  145.280687] PM: hibernation: Allocated 1770628 pages for snapshot
[  145.280698] PM: hibernation: Allocated 7082512 kbytes in 0.92 seconds (7698.38 MB/s)
[  145.280708] Freezing remaining freezable tasks
[  145.282043] Freezing remaining freezable tasks completed (elapsed 0.001 seconds)
[  145.282211] printk: Suspending console(s) (use no_console_suspend to debug)


With the new kernel, the laptop display goes blank after

[  145.282211] printk: Suspending console(s) (use no_console_suspend to debug)

but the the rest of the suspend process does not proceed.  It goes into a not-awake, not-suspending to disk state.

I wish I could provide more info, but so far I cannot see anything overt, except the failure to proceed with suspend to disk and locking up instead.

I notice there were a lot of ACPI changes to this kernel, and they look quite... "overhaulish" for a stable branch.

Thanks

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Thread

Bug#1135599: linux-image-6.1.0-45-amd64:suspend to disk causes lockup on laptop Brad Barnett <debian-bugs5@L8R.net> - 2026-05-03 13:20 +0200
  Bug#1135637: Bug#1135599: linux-image-6.1.0-45-amd64:suspend to disk causes lockup on laptop Salvatore Bonaccorso <carnil@debian.org> - 2026-05-04 08:30 +0200
    Bug#1135599: linux-image-6.1.0-45-amd64:suspend to disk causes lockup on laptop Brad Barnett <debian-bugs5@l8r.net> - 2026-05-04 09:10 +0200
      Bug#1135637: Bug#1135599: linux-image-6.1.0-45-amd64:suspend to disk causes lockup on laptop Bill Allombert <ballombe@debian.org> - 2026-05-04 10:00 +0200
    Bug#1135637: Bug#1135599: linux-image-6.1.0-45-amd64:suspend to disk causes lockup on laptop Brad Barnett <debian-bugs5@l8r.net> - 2026-05-04 11:20 +0200
      Bug#1135599: linux-image-6.1.0-45-amd64:suspend to disk causes lockup on laptop Salvatore Bonaccorso <carnil@debian.org> - 2026-05-04 14:10 +0200
        Bug#1135599: linux-image-6.1.0-45-amd64:suspend to disk causes lockup on laptop Bill Allombert <ballombe@debian.org> - 2026-05-04 14:20 +0200
          Bug#1135599: linux-image-6.1.0-45-amd64:suspend to disk causes lockup on laptop Salvatore Bonaccorso <carnil@debian.org> - 2026-05-04 14:30 +0200
            Bug#1135599: linux-image-6.1.0-45-amd64:suspend to disk causes lockup on laptop Bill Allombert <ballombe@debian.org> - 2026-05-04 23:00 +0200
              Bug#1135599: linux-image-6.1.0-45-amd64:suspend to disk causes lockup on laptop Brad Barnett <debian-bugs5@l8r.net> - 2026-05-04 23:00 +0200
  Bug#1135599: marked as done (linux-image-6.1.0-45-amd64:suspend  to disk causes lockup on laptop) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-05-10 20:40 +0200

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