***
Hello I just reinstalled MX 25 KDE Plasma. First install was with Zram.
I also put the swap file size up (that shouldn’t be an issue), leaving the rest on defaults on an encrypted install.

After I start my hibernated system, I see my desktop for a second, then I am left with a blinking cursor on a black screen. I can still get to TTY and launch htop, where I see 2 kwin_wayland processes at 100%, never finishing, one with Nice 20, the other with -2.
Killing them doesn’t help either.
***


STEPS TO REPRODUCE
1. Put laptop into hibernate
2. Wake laptop from hibernate, put in disk Pw
3.  Observe your destop for 2 seconds, then be dropped to blinking cursor on black screen.

OBSERVED RESULT
blinking cursor on black screen.


EXPECTED RESULT
continue working on desktop

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.3.6
KDE Plasma Version: 6.3.6 
KDE Frameworks Version: 6.13.0
Qt Version: 6.8.2

ADDITIONAL INFORMATION

sudo dmesg | grep hibernat

[ 0.023630] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.023633] PM: hibernation: Registered nosave memory: [mem 0x0009d000-0x000fffff] [ 0.023635] PM: hibernation: Registered nosave memory: [mem 0xbf63f000-0xbf7fefff] [ 0.023637] PM: hibernation: Registered nosave memory: [mem 0xbf800000-0xffffffff] [ 18.799201] systemd[1]: systemd-hibernate-clear.service - Clear Stale Hibernate Storage Info was skipped because of an unmet condition check (ConditionPathExists=/sys/firmware/efi/efivars/HibernateLocation-[NOTPOSTINGTHIS])

Snapshot created on: 20251215_1108
System:
Kernel: 6.12.57+deb13-amd64 arch: x86_64 bits: 64 compiler: gcc v: 14.2.0 clocksource: tsc
avail: hpet,acpi_pm parameters: BOOT_IMAGE=/vmlinuz-6.12.57+deb13-amd64 root=UUID= ro
quiet splash resume=UUID= resume_offset=2752512
Desktop: KDE Plasma v: 6.3.6 tk: Qt v: N/A info: frameworks v: 6.13.0 wm: kwin_wayland vt: 1
dm: SDDM Distro: MX-25_x64 Infinity December 15 2025 base: Debian GNU/Linux 13 (trixie)
Machine:
Type: Laptop System: Sony product: VPCEH2J1E v: C105YCJC

…

Graphics:
Device-1: NVIDIA GF119M [GeForce 410M] vendor: Sony driver: nouveau v: kernel non-free:
series: 390.xx+ status: legacy (EOL~2022-11-22) last: release: 390.157 kernel: 6.0 xorg: 1.21
arch: Fermi code: GF1xx process: 40/28nm built: 2010-2016 pcie: gen: 1 speed: 2.5 GT/s
lanes: 16 link-max: gen: 2 speed: 5 GT/s ports: active: LVDS-1 empty: HDMI-A-1,VGA-1
bus-ID: 01:00.0 chip-ID: 10de:1055 class-ID: 0300 temp: 66.0 C

…

Partition:
ID-1: / raw-size: 893.24 GiB size: 878.14 GiB (98.31%) used: 26.97 GiB (3.1%) fs: ext4
dev: /dev/dm-0 maj-min: 253:0 mapped: luks-
ID-2: /boot raw-size: 1024 MiB size: 973.4 MiB (95.06%) used: 166.9 MiB (17.1%) fs: ext4
dev: /dev/sda1 maj-min: 8:1
Swap:
Kernel: swappiness: 15 (default 60) cache-pressure: 100 (default) zswap: no
ID-1: swap-1 type: file size: 16.6 GiB used: 0 KiB (0.0%) priority: -2 file: /swap/swap
Sensors:
System Temperatures: cpu: 67.0 C mobo: N/A gpu: nouveau temp: 65.0 C
Fan Speeds (rpm): N/A
Repos:
Packages: pm: dpkg pkgs: 2761 libs: 1530 tools: apt,apt-get,aptitude,nala pm: rpm pkgs: 0
pm: flatpak pkgs: 0
No active apt repos in: /etc/apt/sources.list
Active apt repos in: /etc/apt/sources.list.d/debian.sources
1: deb 
 trixie main  contrib non-free non-free-firmware
2: deb 
 trixie-security main  contrib non-free non-free-firmware
3: deb 
 trixie-updates  main contrib non-free non-free-firmware
Active apt repos in: /etc/apt/sources.list.d/extrepo_librewolf.sources
1: deb [arch=amd64] https://repo.librewolf.net librewolf main
Active apt repos in: /etc/apt/sources.list.d/mx.sources
1: deb 
 trixie main  non-free
2: deb 
 trixie ahs
Info:
Memory: total: 8 GiB available: 7.74 GiB used: 2.24 GiB (28.9%)
Processes: 256 Power: uptime: 19m states: freeze,mem,disk suspend: deep avail: s2idle
wakeups: 0 hibernate: platform avail: shutdown, reboot, suspend, test_resume image: 3.04 GiB
services: org_kde_powerdevil, power-profiles-daemon, upowerd Init: systemd v: 257
default: graphical tool: systemctl
Compilers: gcc: 14.2.0 Client: shell wrapper v: 5.2.37-release inxi: 3.3.38
Boot Mode: BIOS (legacy, CSM, MBR)

/etc/default/grub:



GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=“$(unset PRETTY_NAME; (. /etc/lsb-release; echo ${PRETTY_NAME:?}) 2>/dev/null || echo Debian)”
GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash resume=UUID=[NOTPOSTINGIT] resume_offset=2752512”
GRUB_CMDLINE_LINUX=“”

sudo journalctl | grep -i hiber:

Dec 27 14:44:22 imi kernel: PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
Dec 27 14:44:22 imi kernel: PM: hibernation: Registered nosave memory: [mem 0x0009d000-0x000fffff]
Dec 27 14:44:22 imi kernel: PM: hibernation: Registered nosave memory: [mem 0xbf63f000-0xbf7fefff]
Dec 27 14:44:22 imi kernel: PM: hibernation: Registered nosave memory: [mem 0xbf800000-0xffffffff]
Dec 27 14:44:23 imi systemd[1]: systemd-hibernate-clear.service - Clear Stale Hibernate Storage Info was skipped because of an unmet condition check (ConditionPathExists=/sys/firmware/efi/efivars/HibernateLocation-XXXX).
Dec 27 14:48:45 imi kernel: PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
Dec 27 14:48:45 imi kernel: PM: hibernation: Registered nosave memory: [mem 0x0009d000-0x000fffff]
Dec 27 14:48:45 imi kernel: PM: hibernation: Registered nosave memory: [mem 0xbf63f000-0xbf7fefff]
Dec 27 14:48:45 imi kernel: PM: hibernation: Registered nosave memory: [mem 0xbf800000-0xffffffff]
Dec 27 14:48:45 imi systemd[1]: systemd-hibernate-clear.service - Clear Stale Hibernate Storage Info was skipped because of an unmet condition check (ConditionPathExists=/sys/firmware/efi/efivars/HibernateLocation-XXXX).
Dec 27 14:53:21 imi systemd-logind[821]: The system will hibernate now!
Dec 27 14:53:22 imi systemd[1]: Starting systemd-hibernate.service - System Hibernate...
Dec 27 14:53:22 imi systemd-sleep[2404]: Performing sleep operation 'hibernate'...
Dec 27 14:53:22 imi kernel: PM: hibernation: hibernation entry
Dec 27 14:54:36 imi kernel: PM: hibernation: Marking nosave pages: [mem 0x00000000-0x00000fff]
Dec 27 14:54:36 imi kernel: PM: hibernation: Marking nosave pages: [mem 0x0009d000-0x000fffff]
Dec 27 14:54:36 imi kernel: PM: hibernation: Marking nosave pages: [mem 0xbf63f000-0xbf7fefff]
Dec 27 14:54:36 imi kernel: PM: hibernation: Marking nosave pages: [mem 0xbf800000-0xffffffff]
Dec 27 14:54:36 imi kernel: PM: hibernation: Basic memory bitmaps created
Dec 27 14:54:36 imi kernel: PM: hibernation: Preallocating image memory
Dec 27 14:54:36 imi kernel: PM: hibernation: Allocated 510813 pages for snapshot
Dec 27 14:54:36 imi kernel: PM: hibernation: Allocated 2043252 kbytes in 0.54 seconds (3783.80 MB/s)
Dec 27 14:54:36 imi kernel: PM: hibernation: Creating image:
Dec 27 14:54:36 imi kernel: PM: hibernation: Need to copy 543672 pages
Dec 27 14:54:36 imi kernel: PM: hibernation: Normal pages needed: 543672 + 1024, available pages: 1548599
Dec 27 14:54:36 imi kernel: PM: hibernation: Basic memory bitmaps freed
Dec 27 14:54:36 imi systemd-sleep[2404]: System returned from sleep operation 'hibernate'.
Dec 27 14:54:36 imi kernel: PM: hibernation: hibernation exit
Dec 27 14:54:36 imi audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=unconfined msg='unit=systemd-hibernate comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Dec 27 14:54:36 imi audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=unconfined msg='unit=systemd-hibernate comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Dec 27 14:54:36 imi systemd[1]: systemd-hibernate.service: Deactivated successfully.
Dec 27 14:54:36 imi kernel: audit: type=1130 audit(1766843676.960:231): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=unconfined msg='unit=systemd-hibernate comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Dec 27 14:54:36 imi kernel: audit: type=1131 audit(1766843676.960:232): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=unconfined msg='unit=systemd-hibernate comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Dec 27 14:54:36 imi systemd[1]: Finished systemd-hibernate.service - System Hibernate.
Dec 27 14:54:36 imi systemd[1]: systemd-hibernate.service: Consumed 1.069s CPU time, 4.5M memory peak.
Dec 27 14:54:36 imi systemd[1]: Reached target hibernate.target - System Hibernation.
Dec 27 14:54:36 imi systemd-logind[821]: Operation 'hibernate' finished.
Dec 27 14:54:36 imi systemd[1]: Stopped target hibernate.target - System Hibernation.
Dec 27 23:56:25 imi kernel: PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
Dec 27 23:56:25 imi kernel: PM: hibernation: Registered nosave memory: [mem 0x0009d000-0x000fffff]
Dec 27 23:56:25 imi kernel: PM: hibernation: Registered nosave memory: [mem 0xbf63f000-0xbf7fefff]
Dec 27 23:56:25 imi kernel: PM: hibernation: Registered nosave memory: [mem 0xbf800000-0xffffffff]
Dec 27 23:56:25 imi systemd[1]: systemd-hibernate-clear.service - Clear Stale Hibernate Storage Info was skipped because of an unmet condition check (ConditionPathExists=/sys/firmware/efi/efivars/HibernateLocation-XXXX).
Dec 28 00:19:33 imi kernel: PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
Dec 28 00:19:33 imi kernel: PM: hibernation: Registered nosave memory: [mem 0x0009d000-0x000fffff]
Dec 28 00:19:33 imi kernel: PM: hibernation: Registered nosave memory: [mem 0xbf63f000-0xbf7fefff]
Dec 28 00:19:33 imi kernel: PM: hibernation: Registered nosave memory: [mem 0xbf800000-0xffffffff]
Dec 28 00:19:33 imi systemd[1]: systemd-hibernate-clear.service - Clear Stale Hibernate Storage Info was skipped because of an unmet condition check (ConditionPathExists=/sys/firmware/efi/efivars/HibernateLocation-XXXX).
Dec 28 00:31:19 imi systemd-logind[842]: The system will hibernate now!
Dec 28 00:31:19 imi systemd[1]: Starting systemd-hibernate.service - System Hibernate...
Dec 28 00:31:19 imi systemd-sleep[3315]: Performing sleep operation 'hibernate'...
Dec 28 00:31:19 imi kernel: PM: hibernation: hibernation entry
Dec 28 00:33:25 imi kernel: PM: hibernation: Marking nosave pages: [mem 0x00000000-0x00000fff]
Dec 28 00:33:25 imi kernel: PM: hibernation: Marking nosave pages: [mem 0x0009d000-0x000fffff]
Dec 28 00:33:25 imi kernel: PM: hibernation: Marking nosave pages: [mem 0xbf63f000-0xbf7fefff]
Dec 28 00:33:25 imi kernel: PM: hibernation: Marking nosave pages: [mem 0xbf800000-0xffffffff]
Dec 28 00:33:25 imi kernel: PM: hibernation: Basic memory bitmaps created
Dec 28 00:33:25 imi kernel: PM: hibernation: Preallocating image memory
Dec 28 00:33:25 imi kernel: PM: hibernation: Allocated 766242 pages for snapshot
Dec 28 00:33:25 imi kernel: PM: hibernation: Allocated 3064968 kbytes in 1.55 seconds (1977.39 MB/s)
Dec 28 00:33:25 imi kernel: PM: hibernation: Creating image:
Dec 28 00:33:25 imi kernel: PM: hibernation: Need to copy 852260 pages
Dec 28 00:33:25 imi kernel: PM: hibernation: Normal pages needed: 852260 + 1024, available pages: 1240017
Dec 28 00:33:25 imi kernel: PM: hibernation: Basic memory bitmaps freed
Dec 28 00:33:26 imi systemd-sleep[3315]: System returned from sleep operation 'hibernate'.
Dec 28 00:33:26 imi kernel: PM: hibernation: hibernation exit
Dec 28 00:33:26 imi audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=unconfined msg='unit=systemd-hibernate comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Dec 28 00:33:26 imi audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=unconfined msg='unit=systemd-hibernate comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Dec 28 00:33:26 imi kernel: audit: type=1130 audit(1766878406.464:217): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=unconfined msg='unit=systemd-hibernate comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Dec 28 00:33:26 imi kernel: audit: type=1131 audit(1766878406.464:218): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=unconfined msg='unit=systemd-hibernate comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Dec 28 00:33:26 imi systemd[1]: systemd-hibernate.service: Deactivated successfully.
Dec 28 00:33:26 imi systemd[1]: Finished systemd-hibernate.service - System Hibernate.
Dec 28 00:33:26 imi systemd[1]: systemd-hibernate.service: Consumed 2.254s CPU time, 5M memory peak.
Dec 28 00:33:26 imi systemd[1]: Reached target hibernate.target - System Hibernation.
Dec 28 00:33:26 imi systemd[1]: Stopped target hibernate.target - System Hibernation.
Dec 28 00:33:26 imi systemd-logind[842]: Operation 'hibernate' finished.
Dec 28 00:37:16 imi kernel: PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
Dec 28 00:37:16 imi kernel: PM: hibernation: Registered nosave memory: [mem 0x0009d000-0x000fffff]
Dec 28 00:37:16 imi kernel: PM: hibernation: Registered nosave memory: [mem 0xbf63f000-0xbf7fefff]
Dec 28 00:37:16 imi kernel: PM: hibernation: Registered nosave memory: [mem 0xbf800000-0xffffffff]
Dec 28 00:37:16 imi systemd[1]: systemd-hibernate-clear.service - Clear Stale Hibernate Storage Info was skipped because of an unmet condition check (ConditionPathExists=/sys/firmware/efi/efivars/HibernateLocation-XXXX).