Dual Screen Config Issues During Logon

Dear Manjaro Community, every other system start the primary display of my Desktop PC configuration goes to standby mode in the phase between boot and logon.

I get this monitor working again only after the logon, by turning it off and then on again, but then all of the Plasmoids get displaced all over the desktop.

Alternatively, I have to restart the system, and then the logon screen finally appears too on the first display. But it’s not the way it’s supposed to work, since I expect this screen never to go to standby when boot is completed. Boot menu is always visible.

This is my rig:

  • AMD Ryzen 7 3700x
  • AMD Radeon RX 5500XT
  • Kernel: 5.12.1-2
  • Desktop: Plasma 5.21.4
  • Primary Display: iiyama ProLite XB3288UHSU
  • Secondary Display: iiyama ProLite E2783QSU
  • 2-Port Dual DisplayPort KVM
  • Ornara 21.0.4

Thanks in advance for every valuable advice.

:+1: Welcome to Manjaro! :+1:

  1. Please read this:
    How to provide good information
    and post some more information so we can see what’s really going on. Now we know the symptom of the disease, but we need some more probing to know where the origin lies…
  2. An inxi --admin --verbosity=7 --filter --no-host --width would be the minimum required information… (Personally Identifiable Information like serial numbers and MAC addresses will be filtered out by the above command)
    Also, please copy-paste that output in-between 3 backticks ``` at the beginning and end of the code/text.
  3. Kernel 5.9 is EOL so please install both 5.4 and 5.10 LTS (Long Time Support) and see which one of the two troubles you least.


  Kernel: 5.12.1-2-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 
  parameters: BOOT_IMAGE=/@/boot/vmlinuz-5.12-x86_64 
  root=UUID=432c8c82-bdf4-43d4-8b9c-b9cef3f21e93 rw rootflags=subvol=@ quiet 
  apparmor=1 security=apparmor udev.log_priority=3 
  Desktop: KDE Plasma 5.21.4 tk: Qt 5.15.2 wm: kwin_x11 vt: 1 dm: SDDM 
  Distro: Manjaro Linux base: Arch Linux 
  Type: Desktop System: Gigabyte product: B450 AORUS PRO v: N/A 
  serial: <filter> 
  Mobo: Gigabyte model: B450 AORUS PRO-CF v: x.x serial: <filter> 
  UEFI-[Legacy]: American Megatrends v: F50 date: 11/27/2019 
  Message: No system battery data found. Is one present? 
  RAM: total: 31.37 GiB used: 4.56 GiB (14.5%) 
  RAM Report: permissions: Unable to run dmidecode. Root privileges required. 
  Info: 8-Core model: AMD Ryzen 7 3700X bits: 64 type: MT MCP arch: Zen 2 
  family: 17 (23) model-id: 71 (113) stepping: 0 microcode: 8701013 cache: 
  L2: 4 MiB bogomips: 115035 
  Speed: 3139 MHz min/max: 2200/3600 MHz boost: enabled Core speeds (MHz): 
  1: 3139 2: 2147 3: 2167 4: 2065 5: 2194 6: 2169 7: 2091 8: 2812 9: 2065 
  10: 2118 11: 2124 12: 2159 13: 2185 14: 2209 15: 2499 16: 2088 
  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 extapic extd_apicid f16c flushbyasid 
  fma fpu fsgsbase fxsr fxsr_opt ht hw_pstate ibpb ibs irperf lahf_lm lbrv lm 
  mba mca mce misalignsse mmx mmxext monitor movbe msr mtrr mwaitx nonstop_tsc 
  nopl npt nrip_save nx osvw overflow_recov pae pat pausefilter pclmulqdq 
  pdpe1gb perfctr_core perfctr_llc perfctr_nb pfthreshold pge pni popcnt pse 
  pse36 rdpid rdpru rdrand rdseed rdt_a rdtscp rep_good sep sev sev_es sha_ni 
  skinit smap smca sme smep ssbd sse sse2 sse4_1 sse4_2 sse4a ssse3 stibp 
  succor svm svm_lock syscall tce topoext tsc tsc_scale umip v_vmsave_vmload 
  vgif vmcb_clean vme vmmcall 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: 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 AMD retpoline, IBPB: conditional, STIBP: 
  conditional, RSB filling 
  Type: srbds status: Not affected 
  Type: tsx_async_abort status: Not affected 
  Device-1: AMD Navi 14 [Radeon RX 5500/5500M / Pro 5500M] 
  vendor: Micro-Star MSI driver: amdgpu v: kernel bus-ID: 09:00.0 
  chip-ID: 1002:7340 class-ID: 0300 
  Display: x11 server: X.Org 1.20.11 compositor: kwin_x11 driver: 
  loaded: amdgpu,ati unloaded: modesetting,radeon alternate: fbdev,vesa 
  display-ID: :0 screens: 1 
  Screen-1: 0 s-res: 6400x2160 s-dpi: 96 s-size: 1691x571mm (66.6x22.5") 
  s-diag: 1785mm (70.3") 
  Monitor-1: DisplayPort-0 res: 3840x2160 hz: 60 dpi: 140 
  size: 698x393mm (27.5x15.5") diag: 801mm (31.5") 
  Monitor-2: DisplayPort-1 res: 2560x1440 hz: 60 dpi: 109 
  size: 597x336mm (23.5x13.2") diag: 685mm (27") 
  renderer: Radeon RX 5500 XT (NAVI14 DRM 3.40.0 5.12.1-2-MANJARO LLVM 11.1.0) 
  v: 4.6 Mesa 21.0.3 direct render: Yes 
  Device-1: AMD Navi 10 HDMI Audio driver: snd_hda_intel v: kernel 
  bus-ID: 09:00.1 chip-ID: 1002:ab38 class-ID: 0403 
  Device-2: AMD Starship/Matisse HD Audio vendor: Gigabyte 
  driver: snd_hda_intel v: kernel bus-ID: 0b:00.4 chip-ID: 1022:1487 
  class-ID: 0403 
  Sound Server-1: ALSA v: k5.12.1-2-MANJARO running: yes 
  Sound Server-2: JACK v: 0.125.0 running: no 
  Sound Server-3: PulseAudio v: 14.2 running: yes 
  Sound Server-4: PipeWire v: 0.3.26 running: yes 
  Device-1: Intel I211 Gigabit Network vendor: Gigabyte driver: igb v: kernel 
  port: f000 bus-ID: 03:00.0 chip-ID: 8086:1539 class-ID: 0200 
  IF: eno1 state: up speed: 1000 Mbps duplex: full mac: <filter> 
  IF-ID-1: br0 state: up speed: 1000 Mbps duplex: unknown mac: <filter> 
  IP v4: <filter> type: dynamic noprefixroute scope: global 
  broadcast: <filter> 
  IP v6: <filter> type: noprefixroute scope: link 
  WAN IP: <filter> 
  Message: No bluetooth data found. 
  Message: No logical block device data found. 
  Message: No RAID data found. 
  Local Storage: total: 2.73 TiB used: 460.07 GiB (16.5%) 
  SMART Message: Unable to run smartctl. Root privileges required. 
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: SanDisk model: Extreme Pro 1TB 
  size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s 
  lanes: 4 rotation: SSD serial: <filter> rev: 101110RL scheme: GPT 
  ID-2: /dev/sda maj-min: 8:0 vendor: SanDisk model: SDSSDH3 2T00 
  size: 1.82 TiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s 
  rotation: SSD serial: <filter> rev: 30RL scheme: GPT 
  Message: No optical or floppy data found. 
  ID-1: / raw-size: 931.5 GiB size: 931.5 GiB (100.00%) 
  used: 156.49 GiB (16.8%) fs: btrfs dev: /dev/nvme0n1p1 maj-min: 259:1 
  label: System SSD uuid: 432c8c82-bdf4-43d4-8b9c-b9cef3f21e93 
  ID-2: /home raw-size: 1.82 TiB size: 1.82 TiB (100.00%) 
  used: 303.58 GiB (16.3%) fs: btrfs dev: /dev/sda1 maj-min: 8:1 
  label: Data SSD uuid: 283a53d1-4db8-40cf-834a-18d17c54b5ad 
  ID-3: /mnt/EFC Cloud raw-size: N/A size: 3.48 TiB used: 609.39 GiB (17.1%) 
  fs: cifs dev: /dev/EFC Cloud label: N/A uuid: N/A 
  ID-4: /run/timeshift/backup raw-size: 931.5 GiB size: 931.5 GiB (100.00%) 
  used: 156.49 GiB (16.8%) fs: btrfs dev: /dev/nvme0n1p1 maj-min: 259:1 
  label: System SSD uuid: 432c8c82-bdf4-43d4-8b9c-b9cef3f21e93 
  Alert: No swap data was found. 
  ID-1: /dev/nvme0n1p2 maj-min: 259:2 size: 8 MiB fs: <superuser required> 
  label: N/A uuid: N/A 
  Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 10 rev: 2.0 
  speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
  Device-1: 1-8:2 info: Corsair CORSAIR Lighting Node CORE type: HID 
  driver: hid-generic,usbhid interfaces: 1 rev: 2.0 speed: 12 Mb/s power: 50mA 
  chip-ID: 1b1c:0c1a class-ID: 0300 serial: <filter> 
  Hub-2: 2-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.1 speed: 10 Gb/s 
  chip-ID: 1d6b:0003 class-ID: 0900 
  Hub-3: 3-0:1 info: Full speed (or root) Hub ports: 4 rev: 2.0 
  speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
  Hub-4: 3-2:2 info: Genesys Logic Hub ports: 4 rev: 2.1 speed: 480 Mb/s 
  power: 100mA chip-ID: 05e3:0610 class-ID: 0900 
  Hub-5: 3-4:3 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s 
  power: 100mA chip-ID: 05e3:0610 class-ID: 0900 
  Hub-6: 3-4.1:4 info: Generic Virtual HUB ports: 7 rev: 1.0 speed: 12 Mb/s 
  power: 100mA chip-ID: 09ea:0130 class-ID: 0900 
  Device-1: 3-4.1.1:5 info: Logitech RX 250 Optical Mouse type: Mouse 
  driver: hid-generic,usbhid interfaces: 1 rev: 2.0 speed: 12 Mb/s power: 98mA 
  chip-ID: 046d:c050 class-ID: 0301 
  Device-2: 3-4.1.2:6 info: Cooler Master Quickfire XTi type: Keyboard,HID 
  driver: hid-generic,usbhid interfaces: 3 rev: 1.1 speed: 12 Mb/s 
  power: 100mA chip-ID: 2516:002e class-ID: 0300 
  Device-3: 3-4.1.6:7 info: Generic Virtual HID type: Keyboard,Mouse 
  driver: hid-generic,usbhid interfaces: 2 rev: 1.1 speed: 12 Mb/s power: 2mA 
  chip-ID: 09ea:0131 class-ID: 0301 serial: <filter> 
  Hub-7: 4-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.1 speed: 10 Gb/s 
  chip-ID: 1d6b:0003 class-ID: 0900 
  Hub-8: 4-2:2 info: Genesys Logic USB3.0 Hub ports: 4 rev: 3.0 speed: 5 Gb/s 
  chip-ID: 05e3:0620 class-ID: 0900 
  System Temperatures: cpu: 51.8 C mobo: 0 C gpu: amdgpu temp: 48.0 C 
  mem: 0.0 C 
  Fan Speeds (RPM): N/A gpu: amdgpu fan: 0 
  Processes: 405 Uptime: 3d 23h 34m wakeups: 3 Init: systemd v: 247 
  tool: systemctl Compilers: gcc: 10.2.0 clang: 11.1.0 Packages: 1500 
  pacman: 1486 lib: 417 flatpak: 7 snap: 7 Shell: Bash v: 5.1.4 
  running-in: yakuake inxi: 3.3.04```
  1. Seems like you’re on 5.12 Stable and not 5.9 EOL as your profile says (please update that :+1: ), so that’s good, but did you try out 5.4 LTS and 5.10 LTS already?

  2. Your BIOS / UEFI firmware seems to be a bit old:

    Have you checked if there is a newer version already?

  3. Are both monitors native DP monitors or do you have a converter in one of them?


BIOS updated to F61a, 2021/03/29. It seems to work after three times booting, no blank screen with standby.
It’s too early, but it’s a positive signal.
Both monitors have each a DP interface, so I assume it’s native. This much I know.

Many thanks, I’m still monitoring, I’ll close this thread if this issue does not appear anymore.

I’ve marked this answer as the solution to your question as it is by far the best answer you’ll get.

However, if you disagree with my choice, please feel free to take any other answer as the solution to your question or even remove the solution altogether: You are in control! (If you disagree with my choice, just send me a personal message and explain why I shouldn’t have done this or :heart: or :+1: if you agree)

P.S. In the future, please don’t forget to come back and click the 3 dots below the answer to mark a solution like this below the answer that helped you most:
so that the next person that has the exact same problem you just had will benefit from your post as well as your question will now be in the “solved” status.
P.P.S. I’d rather you come back and take the solution away than forgetting to come back to give the solution… :wink:

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