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
