Login password not accepted after sleep

I have two computers, both running Manjaro KDE with SDDM. After the last update, the following happens on both computers, but only sporadically:
After resuming from sleep, at the login prompt, the user password is not accepted. Entering it again and again doesn’t help. I let a couple of minutes go by and then it is accepted and I log in successfully.
Has anyone experienced this?

How is your keyboard connected? What type of keyboard? Also, please post

inxi -Fza

Hi Wollie. Thank you for answering.

I have plain old USB keyboards (Microsoft 600), attached to USB 2.0.
The output to ‘inxi -Fza’ is:

System:
  Kernel: 5.15.7-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0
    parameters: BOOT_IMAGE=/boot/vmlinuz-5.15-x86_64
    root=UUID=52948154-52a0-40e4-94ab-9d57b9f64e82 rw quiet splash
    rd.udev.log_priority=3 audit=0 i915.fastboot=1 pci=nomsi
  Desktop: KDE Plasma 5.23.4 tk: Qt 5.15.2 wm: kwin_x11 vt: 1 dm: SDDM
    Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Desktop System: ASUS product: All Series v: N/A
    serial: <superuser required>
  Mobo: ASUSTeK model: H87I-PLUS v: Rev X.0x serial: <superuser required>
    UEFI: American Megatrends v: 2003 date: 11/05/2014
CPU:
  Info: model: Intel Core i5-4570S bits: 64 type: MCP arch: Haswell family: 6
    model-id: 0x3C (60) stepping: 3 microcode: 0x28
  Topology: cpus: 1x cores: 4 smt: <unsupported> cache: L1: 256 KiB
    desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB L3: 6 MiB
    desc: 1x6 MiB
  Speed (MHz): avg: 1638 high: 2900 min/max: 800/3600 scaling:
    driver: intel_cpufreq governor: schedutil cores: 1: 1159 2: 2900 3: 991
    4: 1503 bogomips: 23210
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities:
  Type: itlb_multihit status: KVM: Split huge pages
  Type: l1tf
    mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled
  Type: mds mitigation: Clear CPU buffers; SMT disabled
  Type: meltdown mitigation: PTI
  Type: spec_store_bypass
    mitigation: Speculative Store Bypass disabled via prctl and seccomp
  Type: spectre_v1
    mitigation: usercopy/swapgs barriers and __user pointer sanitization
  Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional,
    IBRS_FW, STIBP: disabled, RSB filling
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics
    vendor: ASUSTeK driver: i915 v: kernel bus-ID: 00:02.0 chip-ID: 8086:0412
    class-ID: 0300
  Display: x11 server: X.Org 1.21.1.2 compositor: kwin_x11 driver:
    loaded: intel display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2")
    s-diag: 582mm (22.9")
  Monitor-1: HDMI2 res: 1920x1080 dpi: 96 size: 510x290mm (20.1x11.4")
    diag: 587mm (23.1")
  OpenGL: renderer: Mesa DRI Intel HD Graphics 4600 (HSW GT2)
    v: 4.5 Mesa 21.2.5 compat-v: 3.0 direct render: Yes
Audio:
  Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio
    vendor: ASUSTeK driver: snd_hda_intel v: kernel bus-ID: 00:03.0
    chip-ID: 8086:0c0c class-ID: 0403
  Device-2: Intel 8 Series/C220 Series High Definition Audio
    vendor: ASUSTeK driver: snd_hda_intel v: kernel bus-ID: 00:1b.0
    chip-ID: 8086:8c20 class-ID: 0403
  Sound Server-1: ALSA v: k5.15.7-1-MANJARO running: yes
  Sound Server-2: JACK v: 1.9.19 running: no
  Sound Server-3: PulseAudio v: 15.0 running: yes
  Sound Server-4: PipeWire v: 0.3.40 running: yes
Network:
  Device-1: Intel Ethernet I217-V vendor: ASUSTeK driver: e1000e v: kernel
    port: f080 bus-ID: 00:19.0 chip-ID: 8086:153b class-ID: 0200
  IF: eno1 state: up speed: 1000 Mbps duplex: full mac: <filter>
  IF-ID-1: vboxnet0 state: down mac: <filter>
Drives:
  Local Storage: total: 4.32 TiB used: 3.66 TiB (84.8%)
  ID-1: /dev/sda maj-min: 8:0 vendor: Corsair model: Corsair Force LE SSD
    size: 111.79 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
    type: SSD serial: <filter> rev: 12.2 scheme: GPT
  SMART Message: Unknown smartctl error. Unable to generate data.
  ID-2: /dev/sdb maj-min: 8:16 vendor: Hitachi model: HDT725032VLA360
    size: 298.09 GiB block-size: physical: 512 B logical: 512 B speed: 3.0 Gb/s
    type: N/A serial: <filter> rev: A52A scheme: MBR
  SMART Message: Unknown smartctl error. Unable to generate data.
  ID-3: /dev/sdc maj-min: 8:32 vendor: Seagate model: ST9250827AS
    size: 232.89 GiB block-size: physical: 512 B logical: 512 B speed: 1.5 Gb/s
    type: HDD rpm: 5400 serial: <filter> rev: A scheme: MBR
  SMART Message: Unknown smartctl error. Unable to generate data.
  ID-4: /dev/sdd maj-min: 8:48 vendor: Western Digital
    model: WD20EFRX-68AX9N0 size: 1.82 TiB block-size: physical: 4096 B
    logical: 512 B speed: 6.0 Gb/s type: N/A serial: <filter> rev: 0A80
    scheme: GPT
  SMART Message: Unknown smartctl error. Unable to generate data.
  ID-5: /dev/sde maj-min: 8:64 vendor: Western Digital
    model: WD20EFRX-68EUZN0 size: 1.82 TiB block-size: physical: 4096 B
    logical: 512 B speed: 6.0 Gb/s type: HDD rpm: 5400 serial: <filter>
    rev: 0A80 scheme: GPT
  SMART Message: Unknown smartctl error. Unable to generate data.
  ID-6: /dev/sdf maj-min: 8:80 type: USB vendor: Toshiba
    model: KIOXIA TransMemory size: 58.17 GiB block-size: physical: 512 B
    logical: 512 B type: N/A serial: <filter> rev: PMAP scheme: MBR
  SMART Message: Unknown USB bridge. Flash drive/Unsupported enclosure?
Partition:
  ID-1: / raw-size: 47.24 GiB size: 46.37 GiB (98.17%)
    used: 32.84 GiB (70.8%) fs: ext4 block-size: 4096 B dev: /dev/sda5
    maj-min: 8:5
  ID-2: /boot/efi raw-size: 100 MiB size: 96 MiB (96.00%)
    used: 23.9 MiB (24.9%) fs: vfat block-size: 512 B dev: /dev/sda2
    maj-min: 8:2
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
  ID-1: swap-1 type: partition size: 8 GiB used: 1.5 GiB (18.7%)
    priority: -2 dev: /dev/sdb3 maj-min: 8:19
Sensors:
  System Temperatures: cpu: 29.8 C mobo: 27.8 C
  Fan Speeds (RPM): N/A
Info:
  Processes: 304 Uptime: 14d 20h 57m wakeups: 35 Memory: 15.32 GiB
  used: 9.86 GiB (64.4%) Init: systemd v: 249 tool: systemctl Compilers:
  gcc: 11.1.0 clang: 13.0.0 Packages: pacman: 1891 lib: 510 Shell: Bash
  v: 5.1.12 running-in: konsole inxi: 3.3.11

First you should update your system by

sudo pacman-mirrors -f && sudo pacman -Syyu

I also think there is a BIOS update available here.

I’ll update the system as soon as possible and post back if it solved the issue.
That you took the trouble to check for a BIOS update is just amazing! Well done.

Had the same thing. Rebooted and had the 5.4 kernel available in grub instead of the 5.15 I was using so I booted that and am able to resume from sleep. My error was nothing would happen after entering my password at the login prompt.

A month has gone by. I’ve kept one computer updated (updated again today) and the other not. It never happened again on either one. It seems it was a one time glitch.
Thanks again for your effort. Cheers! João