Plasma-Systemmonitor does not show network graph anymore

ds000001 · 2026-01-13 18:37:14

Hello,
I don't know how long this issue exists, but it is rather new, tops 6 weeks old.
One day the plasma-systemmonitor applet stopped showing any network traffic.
Today I opened plasma-systemmonitor and the network graph here is empty too.
Checked "--help" and "--help-all" in hope to find a (easy) debug mode, but the program does not have one.

I don't know now how to further debug.
There are posts on the internet about such an issue, but helpers like ksysguard are installed and other solutions
are over a year old, while mostly of them are "just update the package".

Any suggestions?

MAYBL8 · 2026-01-13 18:52:07

Does traffic show in the system tray icon when you open it?

ds000001 · 2026-01-14 15:41:36

Yes and this is currently my workaround to check network usage.

MAYBL8 · 2026-01-14 16:13:11

How about some system info:
Run:

inxi -Fazy

ds000001 · 2026-01-17 07:01:31

Sorry for the late reply, but here you go:

System:
  Kernel: 6.18.5-arch1-1 arch: x86_64 bits: 64 compiler: gcc v: 15.2.1
    clocksource: tsc avail: hpet,acpi_pm parameters: BOOT_IMAGE=/vmlinuz-linux
    root=UUID=a94dbc20-4e71-450c-8165-25f53a58f5dd rw loglevel=3
  Desktop: KDE Plasma v: 6.5.4 tk: Qt v: N/A wm: kwin_wayland dm: SDDM
    Distro: Arch Linux
Machine:
  Type: Desktop Mobo: ASRock model: X370 Gaming-ITX/ac serial: N/A
    uuid: 53c28570-93a5-0000-0000-000000000000 Firmware: UEFI
    vendor: American Megatrends v: P7.40 date: 10/27/2022
CPU:
  Info: model: AMD Ryzen 7 5800X3D socket: AM4 bits: 64 type: MT MCP
    arch: Zen 3+ gen: 3 level: v3 note: check built: 2022 process: TSMC n6 (7nm)
    family: 0x19 (25) model-id: 0x21 (33) stepping: 2 microcode: 0xA201211
  Topology: cpus: 1x dies: 1 clusters: 1 cores: 8 threads: 16 tpc: 2
    smt: enabled cache: L1: 512 KiB desc: d-8x32 KiB; i-8x32 KiB L2: 4 MiB
    desc: 8x512 KiB L3: 96 MiB desc: 1x96 MiB
  Speed (MHz): avg: 3368 min/max: 576/4553 boost: enabled
    base/boost: 3400/3400 scaling: driver: amd-pstate-epp governor: powersave
    volts: 1.1 V ext-clock: 100 MHz cores: 1: 3368 2: 3368 3: 3368 4: 3368
    5: 3368 6: 3368 7: 3368 8: 3368 9: 3368 10: 3368 11: 3368 12: 3368 13: 3368
    14: 3368 15: 3368 16: 3368 bogomips: 108589
  Flags-basic: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3
    svm
  Vulnerabilities:
  Type: gather_data_sampling status: Not affected
  Type: ghostwrite status: Not affected
  Type: indirect_target_selection status: Not affected
  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: old_microcode status: Not affected
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed status: Not affected
  Type: spec_rstack_overflow mitigation: Safe RET
  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; BHI: Not
    affected
  Type: srbds status: Not affected
  Type: tsa mitigation: Clear CPU buffers
  Type: tsx_async_abort status: Not affected
  Type: vmscape mitigation: IBPB before exit to userspace
Graphics:
  Device-1: Advanced Micro Devices [AMD/ATI] Navi 48 [Radeon RX 9070/9070
    XT/9070 GRE] vendor: ASRock driver: amdgpu v: kernel arch: RDNA-4
    code: Navi-4x process: TSMC n4 (4nm) built: 2025+ pcie: gen: 5
    speed: 32 GT/s lanes: 16 ports: active: DP-2,HDMI-A-1
    empty: DP-1,DP-3,Writeback-1 bus-ID: 0d:00.0 chip-ID: 1002:7550
    class-ID: 0300
  Display: unspecified server: X.Org v: 24.1.9 with: Xwayland v: 24.1.9
    compositor: kwin_wayland driver: X: loaded: amdgpu unloaded: modesetting
    alternate: fbdev,vesa dri: radeonsi gpu: amdgpu display-ID: :1 screens: 1
  Screen-1: 0 s-res: 3840x1080 s-dpi: 96 s-size: 1016x286mm (40.00x11.26")
    s-diag: 1055mm (41.55")
  Monitor-1: DP-2 pos: primary,left model: AOC 24G2W1G8 serial: <filter>
    built: 2022 res: mode: 1920x1080 hz: 240 scale: 100% (1) dpi: 93 gamma: 1.2
    size: 527x296mm (20.75x11.65") diag: 604mm (23.8") ratio: 16:9 modes:
    max: 1920x1080 min: 720x400
  Monitor-2: HDMI-A-1 pos: right model: EIZO NANAO FS2333 serial: <filter>
    built: 2014 res: mode: 1920x1080 hz: 60 scale: 100% (1) dpi: 96 gamma: 1.2
    size: 510x287mm (20.08x11.3") diag: 585mm (23") ratio: 16:9 modes:
    max: 1920x1080 min: 720x400
  API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
    device: 1 drv: swrast gbm: drv: radeonsi surfaceless: drv: radeonsi x11:
    drv: radeonsi inactive: wayland
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.3.3-arch1.2
    glx-v: 1.4 direct-render: yes renderer: AMD Radeon RX 9070 (radeonsi gfx1201
    LLVM 21.1.6 DRM 3.64 6.18.5-arch1-1) device-ID: 1002:7550 memory: 15.62 GiB
    unified: no
  API: Vulkan v: 1.4.335 layers: 6 device: 0 type: discrete-gpu name: AMD
    Radeon RX 9070 (RADV GFX1201) driver: mesa radv v: 25.3.3-arch1.2
    device-ID: 1002:7550 surfaces: N/A
  Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
    de: kscreen-console,kscreen-doctor gpu: lact,radeontop wl: wayland-info
    x11: xdpyinfo, xprop, xrandr
Audio:
  Device-1: Advanced Micro Devices [AMD/ATI] Navi 48 HDMI/DP Audio
    driver: snd_hda_intel v: kernel pcie: gen: 5 speed: 32 GT/s lanes: 16
    bus-ID: 0d:00.1 chip-ID: 1002:ab40 class-ID: 0403
  Device-2: Advanced Micro Devices [AMD] Starship/Matisse HD Audio
    vendor: ASRock driver: snd_hda_intel v: kernel pcie: gen: 4 speed: 16 GT/s
    lanes: 16 bus-ID: 0f:00.4 chip-ID: 1022:1487 class-ID: 0403
  API: ALSA v: k6.18.5-arch1-1 status: kernel-api
    tools: alsactl,alsamixer,amixer
  Server-1: JACK v: 1.9.22 status: off tools: N/A
  Server-2: PipeWire v: 1.4.9 status: n/a (root, process) with:
    1: pipewire-pulse status: active 2: pipewire-media-session status: active
    3: pipewire-alsa type: plugin tools: pactl,pw-cat,pw-cli
Network:
  Device-1: Intel Wi-Fi 6E AX210/AX1675 2x2 [Typhoon Peak] driver: iwlwifi
    v: kernel pcie: gen: 2 speed: 5 GT/s lanes: 1 bus-ID: 09:00.0
    chip-ID: 8086:2725 class-ID: 0280
  IF: wlp9s0 state: up 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: 0a:00.0
    chip-ID: 8086:1539 class-ID: 0200
  IF: enp10s0 state: down mac: <filter>
  IF-ID-1: virbr0 state: down mac: <filter>
  Info: services: NetworkManager, systemd-timesyncd, wpa_supplicant
Bluetooth:
  Device-1: Intel AX210 Bluetooth driver: btusb v: 0.8 type: USB rev: 2.0
    speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-10:2 chip-ID: 8087:0032
    class-ID: e001
  Report: btmgmt ID: hci0 rfk-id: 0 state: down bt-service: enabled,running
    rfk-block: hardware: no software: yes address: <filter> bt-v: 5.4 lmp-v: 13
    status: discoverable: no pairing: no
Drives:
  Local Storage: total: 1.38 TiB used: 971.58 GiB (69.0%)
  ID-1: /dev/sda maj-min: 8:0 vendor: Crucial model: CT1000MX500SSD1
    family: Micron Client SSDs size: 931.51 GiB block-size: physical: 4096 B
    logical: 512 B sata: 3.3 speed: 6.0 Gb/s tech: SSD serial: <filter>
    fw-rev: 023 temp: 28 C scheme: MBR
  SMART: yes state: enabled health: PASSED on: 329d 13h cycles: 3029
    written: 27.4 TiB
  ID-2: /dev/sdb maj-min: 8:16 vendor: Kingston model: SKC400S37512G
    family: Driven SSDs size: 476.94 GiB block-size: physical: 512 B
    logical: 512 B sata: 3.1 speed: 6.0 Gb/s tech: SSD serial: <filter>
    fw-rev: 001B temp: 27 C scheme: GPT
  SMART: yes state: enabled health: PASSED on: 1y 305d 16h cycles: 6087
    read: 64195 GiB written: 35767 GiB
Partition:
  ID-1: / raw-size: 472.94 GiB size: 464.45 GiB (98.20%)
    used: 319.07 GiB (68.7%) fs: ext4 block-size: 4096 B dev: /dev/sdb3
    maj-min: 8:19
  ID-2: /boot raw-size: 2 GiB size: 2 GiB (99.80%) used: 41.3 MiB (2.0%)
    fs: vfat block-size: 512 B dev: /dev/sdb1 maj-min: 8:17
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: yes
    compressor: zstd max-pool: 20%
  ID-1: swap-1 type: partition size: 2 GiB used: 8.8 MiB (0.4%) priority: -2
    dev: /dev/sdb2 maj-min: 8:18
Sensors:
  System Temperatures: cpu: 35.5 C mobo: N/A gpu: amdgpu temp: 34.0 C
    mem: 55.0 C
  Fan Speeds (rpm): fan-1: 722 fan-2: 0 fan-3: 1335 fan-4: 0 fan-5: 0
    gpu: amdgpu fan: 0
Info:
  Memory: total: 32 GiB available: 31.26 GiB used: 7.25 GiB (23.2%)
  Processes: 461 Power: uptime: 5m states: freeze,mem,disk suspend: deep
    avail: s2idle wakeups: 0 hibernate: platform avail: shutdown, reboot,
    suspend, test_resume image: 12.5 GiB services: org_kde_powerdevil,upowerd
    Init: systemd v: 259 default: graphical tool: systemctl
  Packages: 2260 pm: pacman pkgs: 2251 libs: 620 tools: paru pm: flatpak
    pkgs: 9 Compilers: clang: 21.1.6 alt: 17/17 gcc: 15.2.1 alt: 14
    Shell: Bash (sudo) v: 5.3.9 running-in: konsole inxi: 3.3.40

MAYBL8 · 2026-01-17 13:31:27

I found this article but its from 2023 so I don't know if it applies.
https://discuss.kde.org/t/in-system-mon … ork/5860/5

The only other recommendations I see out there is maybe a kernel change or some people have some different network usages that affect it.

ds000001 · 2026-01-17 19:27:16

Well, if the Arch repository and it's sources are correct, the libpcap dependency is honoured: https://gitlab.archlinux.org/archlinux/ … type=heads
And the capability CAP_NET_RAW is honoured too.

Arch Linux

#1 2026-01-13 18:37:14

Plasma-Systemmonitor does not show network graph anymore

#2 2026-01-13 18:52:07

Re: Plasma-Systemmonitor does not show network graph anymore

#3 2026-01-14 15:41:36

Re: Plasma-Systemmonitor does not show network graph anymore

#4 2026-01-14 16:13:11

Re: Plasma-Systemmonitor does not show network graph anymore

#5 2026-01-17 07:01:31

Re: Plasma-Systemmonitor does not show network graph anymore

#6 2026-01-17 13:31:27

Re: Plasma-Systemmonitor does not show network graph anymore

#7 2026-01-17 19:27:16

Re: Plasma-Systemmonitor does not show network graph anymore

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