Monitors no longer automatically suspend/sleep after timeout

My monitors no longer go to sleep after a timeout. It used to work fine, but stopped randomly a couple months ago with an update. I’m not quite sure which.

I have tried using both xfce Power Manager and XScreensaver to configure the setting. (I have tried them individually and both together.)

The monitors do not sleep and then wake up; they never sleep.

I can manually put them to sleep with
sleep 2;xset dpms force standby
And they sleep just fine and remain asleep, but I cannot get them to turn off automatically.

I have no idea where to even begin looking to troubleshoot this.

 System:
  Kernel: 5.19.7-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.2.0
    parameters: BOOT_IMAGE=/boot/vmlinuz-5.19-x86_64
    root=UUID=6155e3c2-b70c-4c4b-8093-9b1888b9368a ro quiet apparmor=1
    security=apparmor udev.log_priority=3
  Desktop: Xfce v: 4.16.1 tk: Gtk v: 3.24.34 info: xfce4-panel wm: xfwm
    v: 4.16.1 vt: 7 dm: LightDM v: 1.32.0 Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Desktop Mobo: ASRock model: X570 Taichi serial: <superuser required>
    UEFI: American Megatrends v: P4.00 date: 01/19/2021
Battery:
  Device-1: hidpp_battery_0 model: Logitech MX Keys Wireless Keyboard
    serial: <filter> charge: 100% (should be ignored) rechargeable: yes
    status: full
Memory:
  RAM: total: 62.72 GiB used: 7.24 GiB (11.5%)
  RAM Report: permissions: Unable to run dmidecode. Root privileges
    required.
CPU:
  Info: model: AMD Ryzen 9 5950X bits: 64 type: MT MCP arch: Zen 3 gen: 4
    level: v3 built: 2021-22 process: TSMC n7 (7nm) family: 0x19 (25)
    model-id: 0x21 (33) stepping: 0 microcode: 0xA201009
  Topology: cpus: 1x cores: 16 tpc: 2 threads: 32 smt: enabled cache:
    L1: 1024 KiB desc: d-16x32 KiB; i-16x32 KiB L2: 8 MiB desc: 16x512 KiB
    L3: 64 MiB desc: 2x32 MiB
  Speed (MHz): avg: 2373 high: 3794 min/max: 2200/5083 boost: enabled
    scaling: driver: acpi-cpufreq governor: schedutil cores: 1: 3597 2: 2200
    3: 2200 4: 2200 5: 2200 6: 2200 7: 2200 8: 2200 9: 2200 10: 2200 11: 3400
    12: 2200 13: 2200 14: 2200 15: 2200 16: 2200 17: 2200 18: 2200 19: 2880
    20: 2200 21: 2200 22: 2200 23: 2200 24: 2200 25: 2200 26: 2200 27: 3794
    28: 2200 29: 2200 30: 2200 31: 2875 32: 2200 bogomips: 217718
  Flags: 3dnowprefetch abm adx aes aperfmperf apic arat avic avx avx2 bmi1
    bmi2 bpext cat_l3 cdp_l3 clflush clflushopt clwb clzero cmov cmp_legacy
    constant_tsc cpb cpuid cqm cqm_llc cqm_mbm_local cqm_mbm_total
    cqm_occup_llc cr8_legacy cx16 cx8 de decodeassists erms extapic
    extd_apicid f16c flushbyasid fma fpu fsgsbase fsrm fxsr fxsr_opt ht
    hw_pstate ibpb ibrs ibs invpcid irperf lahf_lm lbrv lm mba mca mce
    misalignsse mmx mmxext monitor movbe msr mtrr mwaitx nonstop_tsc nopl npt
    nrip_save nx ospke osvw overflow_recov pae pat pausefilter pclmulqdq
    pdpe1gb perfctr_core perfctr_llc perfctr_nb pfthreshold pge pku pni popcnt
    pse pse36 rapl rdpid rdpru rdrand rdseed rdt_a rdtscp rep_good sep sha_ni
    skinit smap smca smep ssbd sse sse2 sse4_1 sse4_2 sse4a ssse3 stibp succor
    svm svm_lock syscall tce topoext tsc tsc_scale umip v_spec_ctrl
    v_vmsave_vmload vaes vgif vmcb_clean vme vmmcall vpclmulqdq wbnoinvd wdt
    xgetbv1 xsave xsavec xsaveerptr xsaveopt xsaves
  Vulnerabilities:
  Type: itlb_multihit status: Not affected
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: mmio_stale_data status: Not affected
  Type: retbleed status: Not affected
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: Retpolines, IBPB: conditional, IBRS_FW,
    STIBP: always-on, RSB filling, PBRSB-eIBRS: Not affected
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Conexant Systems CX23887/8 PCIe Broadcast Audio and Video Decoder
    with 3D Comb vendor: Hauppauge works WinTV-quadHD driver: cx23885 v: 0.0.4
    pcie: gen: 1 speed: 2.5 GT/s lanes: 1 bus-ID: 0d:00.0 chip-ID: 14f1:8880
    class-ID: 0400
  Device-2: Conexant Systems CX23887/8 PCIe Broadcast Audio and Video
    Decoder with 3D Comb vendor: Hauppauge works driver: cx23885 v: 0.0.4
    pcie: gen: 1 speed: 2.5 GT/s lanes: 1 bus-ID: 0e:00.0 chip-ID: 14f1:8880
    class-ID: 0400
  Device-3: AMD Navi 21 [Radeon RX 6800/6800 XT / 6900 XT] vendor: Sapphire
    driver: amdgpu v: kernel arch: RDNA-2 code: Navi-2x process: TSMC n7 (7nm)
    built: 2020-22 pcie: gen: 4 speed: 16 GT/s lanes: 16 ports:
    active: DP-1,DP-2,HDMI-A-1 empty: DP-3 bus-ID: 14:00.0 chip-ID: 1002:73bf
    class-ID: 0300
  Display: x11 server: X.Org v: 21.1.4 compositor: xfwm v: 4.16.1 driver: X:
    loaded: amdgpu unloaded: modesetting,radeon alternate: fbdev,vesa
    gpu: amdgpu display-ID: :0.0 screens: 1
  Screen-1: 0 s-res: 7040x1440 s-dpi: 96 s-size: 1863x381mm (73.35x15.00")
    s-diag: 1902mm (74.86")
  Monitor-1: DP-1 mapped: DisplayPort-0 pos: primary,top-center
    model: Dell U2520DR serial: <filter> built: 2020 res: 2560x1440 hz: 60
    dpi: 118 gamma: 1.2 size: 553x311mm (21.77x12.24") diag: 634mm (25")
    ratio: 16:9 modes: max: 2560x1440 min: 720x400
  Monitor-2: DP-2 mapped: DisplayPort-1 pos: top-right model: Dell U2520DR
    serial: <filter> built: 2021 res: 2560x1440 hz: 60 dpi: 118 gamma: 1.2
    size: 553x311mm (21.77x12.24") diag: 634mm (25") ratio: 16:9 modes:
    max: 2560x1440 min: 720x400
  Monitor-3: HDMI-A-1 mapped: HDMI-A-0 pos: bottom-l model: Dell U2410
    serial: <filter> built: 2012 res: 1920x1200 hz: 60 dpi: 94 gamma: 1.2
    size: 518x324mm (20.39x12.76") diag: 611mm (24.1") ratio: 16:10 modes:
    max: 1920x1200 min: 720x400
  OpenGL: renderer: AMD Radeon RX 6800 (sienna_cichlid LLVM 14.0.6 DRM 3.47
    5.19.7-1-MANJARO) v: 4.6 Mesa 22.1.7 direct render: Yes
Audio:
  Device-1: Conexant Systems CX23887/8 PCIe Broadcast Audio and Video Decoder
    with 3D Comb vendor: Hauppauge works WinTV-quadHD driver: cx23885 v: 0.0.4
    pcie: gen: 1 speed: 2.5 GT/s lanes: 1 bus-ID: 0d:00.0 chip-ID: 14f1:8880
    class-ID: 0400
  Device-2: Conexant Systems CX23887/8 PCIe Broadcast Audio and Video
    Decoder with 3D Comb vendor: Hauppauge works driver: cx23885 v: 0.0.4
    pcie: gen: 1 speed: 2.5 GT/s lanes: 1 bus-ID: 0e:00.0 chip-ID: 14f1:8880
    class-ID: 0400
  Device-3: AMD Navi 21/23 HDMI/DP Audio driver: snd_hda_intel v: kernel
    pcie: gen: 4 speed: 16 GT/s lanes: 16 bus-ID: 14:00.1 chip-ID: 1002:ab28
    class-ID: 0403
  Device-4: AMD Starship/Matisse HD Audio vendor: ASRock
    driver: snd_hda_intel v: kernel pcie: gen: 4 speed: 16 GT/s lanes: 16
    bus-ID: 16:00.4 chip-ID: 1022:1487 class-ID: 0403
  Sound Server-1: ALSA v: k5.19.7-1-MANJARO running: yes
  Sound Server-2: JACK v: 1.9.21 running: no
  Sound Server-3: PulseAudio v: 16.1 running: yes
  Sound Server-4: PipeWire v: 0.3.57 running: yes
Network:
  Device-1: Intel Wi-Fi 6 AX200 driver: iwlwifi v: kernel pcie: gen: 2
    speed: 5 GT/s lanes: 1 bus-ID: 07:00.0 chip-ID: 8086:2723 class-ID: 0280
  IF: wlp7s0 state: down mac: <filter>
  Device-2: Intel I211 Gigabit Network vendor: ASRock driver: igb v: kernel
    pcie: gen: 1 speed: 2.5 GT/s lanes: 1 port: f000 bus-ID: 09:00.0
    chip-ID: 8086:1539 class-ID: 0200
  IF: enp9s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: noprefixroute scope: link
  IF-ID-1: vmnet1 state: unknown speed: N/A duplex: N/A mac: <filter>
  IP v4: <filter> scope: global broadcast: <filter>
  IP v6: <filter> scope: link
  IF-ID-2: vmnet8 state: unknown speed: N/A duplex: N/A mac: <filter>
  Message: Output throttled. IPs: 2; Limit: 10; Override: --limit [1-x;-1
    all]
  WAN IP: <filter>
Bluetooth:
  Device-1: Intel AX200 Bluetooth type: USB driver: btusb v: 0.8 bus-ID: 3-2:2
    chip-ID: 8087:0029 class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 0 state: up address: see --recommends
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 2.73 TiB used: 1.74 TiB (63.7%)
  SMART Message: Required tool smartctl not installed. Check --recommends
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung model: SSD 970 EVO Plus
    2TB size: 1.82 TiB block-size: physical: 512 B logical: 512 B
    speed: 31.6 Gb/s lanes: 4 type: SSD serial: <filter> rev: 2B2QEXM7
    temp: 47.9 C scheme: GPT
  ID-2: /dev/nvme1n1 maj-min: 259:1 vendor: Samsung model: SSD 960 EVO 1TB
    size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
    lanes: 4 type: SSD serial: <filter> rev: 2B7QCXE7 temp: 45.9 C scheme: MBR
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 1.82 TiB size: 1.79 TiB (98.37%) used: 1.1 TiB (61.2%)
    fs: ext4 dev: /dev/nvme0n1p2 maj-min: 259:4 label: N/A
    uuid: 6155e3c2-b70c-4c4b-8093-9b1888b9368a
  ID-2: /Storage raw-size: 931.51 GiB size: 915.82 GiB (98.31%) used: 658.51
    GiB (71.9%) fs: ext4 dev: /dev/nvme1n1p1 maj-min: 259:2 label: Storage
    uuid: 7790f4c2-7e10-4b79-8411-8644affaca29
  ID-3: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%) used: 312 KiB
    (0.1%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:3 label: N/A
    uuid: B4C3-27D5
  ID-4: /media/Bunnyfiles raw-size: N/A size: 31.42 TiB used: 23.11 TiB
    (73.6%) fs: cifs dev: /dev/Bunnyfiles
  ID-5: /media/Ebooks raw-size: N/A size: 31.42 TiB used: 23.11 TiB (73.6%)
    fs: cifs dev: /dev/Ebooks
  ID-6: /media/Games raw-size: N/A size: 31.42 TiB used: 23.11 TiB (73.6%)
    fs: cifs dev: /dev/games
  ID-7: /media/Synology raw-size: N/A size: 31.42 TiB used: 23.11 TiB
    (73.6%) fs: nfs4 remote: 192.168.0.21:/volume1/Synology
  ID-8: /media/music raw-size: N/A size: 31.42 TiB used: 23.11 TiB (73.6%)
    fs: cifs dev: /dev/music
  ID-9: /media/video raw-size: N/A size: 31.42 TiB used: 23.11 TiB (73.6%)
    fs: nfs4 remote: 192.168.0.21:/volume1/video
Swap:
  Alert: No swap data was found.
Unmounted:
  Message: No unmounted partitions found.
USB:
  Hub-1: 1-0:1 info: Hi-speed hub with single TT ports: 6 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 1-1:2 info: Kensington Expert Mouse Trackball type: Mouse
    driver: hid-generic,usbhid interfaces: 1 rev: 2.0 speed: 1.5 Mb/s
    power: 100mA chip-ID: 047d:1020 class-ID: 0301
  Hub-2: 1-2:3 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s
    power: 100mA chip-ID: 05e3:0608 class-ID: 0900
  Device-1: 1-2.1:5 info: Genesys Logic All-in-One Cardreader
    type: Mass Storage driver: usb-storage interfaces: 1 rev: 2.1
    speed: 480 Mb/s power: 500mA chip-ID: 05e3:0732 class-ID: 0806
    serial: <filter>
  Device-2: 1-3:4 info: Logitech Unifying Receiver type: Keyboard,Mouse,HID
    driver: logitech-djreceiver,usbhid interfaces: 3 rev: 2.0 speed: 12 Mb/s
    power: 98mA chip-ID: 046d:c52b class-ID: 0300
  Device-3: 1-5:6 info: ROCCAT Tyon White Mouse type: Mouse,HID
    driver: hid-generic,usbhid interfaces: 4 rev: 2.0 speed: 12 Mb/s
    power: 500mA chip-ID: 1e7d:2e4b class-ID: 0300 serial: <filter>
  Hub-3: 2-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
  Hub-4: 3-0:1 info: Hi-speed hub with single TT ports: 6 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 3-1:4 info: MediaTek Cyrus CS 24 type: <vendor specific>
    driver: N/A interfaces: 1 rev: 2.1 speed: 480 Mb/s power: 500mA
    chip-ID: 0e8d:2008 class-ID: 0000 serial: <filter>
  Device-2: 3-2:2 info: Intel AX200 Bluetooth type: Bluetooth driver: btusb
    interfaces: 2 rev: 2.0 speed: 12 Mb/s power: 100mA chip-ID: 8087:0029
    class-ID: e001
  Device-3: 3-4:3 info: Razer USA Tartarus V2 type: Keyboard,Mouse
    driver: razerkbd,usbhid interfaces: 3 rev: 2.0 speed: 12 Mb/s power: 500mA
    chip-ID: 1532:022b class-ID: 0300
  Hub-5: 4-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
  Hub-6: 5-0:1 info: Hi-speed hub with single TT ports: 4 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Hub-7: 5-3:2 info: Terminus USB 2.0 Hub ports: 4 rev: 2.0 speed: 480 Mb/s
    power: 100mA chip-ID: 1a40:0801 class-ID: 0900
  Device-1: 5-3.1:3 info: HAILUCK USB KEYBOARD type: Keyboard,HID
    driver: hid-generic,usbhid interfaces: 2 rev: 1.1 speed: 1.5 Mb/s
    power: 100mA chip-ID: 258a:000c class-ID: 0300
  Hub-8: 6-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
  System Temperatures: cpu: 41.1 C mobo: N/A gpu: amdgpu temp: 47.0 C
    mem: 48.0 C
  Fan Speeds (RPM): N/A gpu: amdgpu fan: 0
Info:
  Processes: 554 Uptime: 1d 1h 5m wakeups: 2 Init: systemd v: 251
  default: graphical tool: systemctl Compilers: gcc: 12.2.0 clang: 14.0.6
  Packages: 1911 pm: pacman pkgs: 1903 libs: 539 tools: pacaur,pamac,pikaur
  pm: flatpak pkgs: 6 pm: snap pkgs: 2 Shell: Bash v: 5.1.16
  running-in: gnome-terminal inxi: 3.3.21
 Screen 0: minimum 320 x 200, current 7040 x 1440, maximum 16384 x 16384
DisplayPort-0 connected primary 2560x1440+1920+0 (normal left inverted right x axis y axis) 553mm x 311mm
   2560x1440     59.95*+
   1920x1200     59.88  
   2048x1080     60.00    24.00  
   1920x1080     60.00    50.00    59.94    24.00    23.98  
   1600x1200     60.00  
   1680x1050     59.95  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.95  
   1280x800      59.95  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  
DisplayPort-1 connected 2560x1440+4480+0 (normal left inverted right x axis y axis) 553mm x 311mm
   2560x1440     59.95*+
   1920x1200     59.88  
   2048x1080     60.00    24.00  
   1920x1080     60.00    50.00    59.94    24.00    23.98  
   1600x1200     60.00  
   1680x1050     59.95  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.95  
   1280x800      59.95  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 connected 1920x1200+0+240 (normal left inverted right x axis y axis) 518mm x 324mm
   1920x1200     59.95*+
   1920x1080     60.00    50.00    59.94    24.00    23.98  
   1600x1200     60.00  
   1680x1050     59.95  
   1280x1024     75.02    60.02  
   1440x900      59.95  
   1280x800      59.95  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  

There doesn’t appear to be anything even close to relevant in dmesg or journalctl.