Massive warning in log console

Installation & Configuration Linux
#1

Hi,
I’m wondering why I find massive warning in log console (such as 2 GB in two days after cleaning the log file)

The message is:

Ardour-Ardour_8.12.0.desktop[3139]: warning: patch:Set for unknown property

Ardour 8.12.0 installed on Ubuntu 24.04 LTS
some informations about my system

fabrizio@andromeda:~$ LANG=C inxi -Fxxxrzc0 --usb
System:
  Kernel: 6.14.0-36-generic arch: x86_64 bits: 64 compiler: gcc v: 13.3.0
    clocksource: hpet
  Desktop: GNOME v: 46.0 tk: GTK v: 3.24.41 wm: gnome-shell
    tools: gsd-screensaver-proxy dm: GDM3 v: 46.2 Distro: Ubuntu 24.04.3 LTS
    (Noble Numbat)
Machine:
  Type: Mini-pc System: ORIGIMAGIC product: Comet Series v: N/A
    serial: <superuser required>
  Mobo: ORIGIMAGIC model: ADB19D serial: <superuser required> part-nu: 0004
    uuid: <superuser required> UEFI: American Megatrends v: ADB19D 1.04
    date: 05/16/2025
CPU:
  Info: quad core model: AMD Ryzen 5 3550H with Radeon Vega Mobile Gfx
    bits: 64 type: MT MCP smt: enabled arch: Zen/Zen+ note: check rev: 1 cache:
    L1: 384 KiB L2: 2 MiB L3: 4 MiB
  Speed (MHz): avg: 1659 high: 2775 min/max: 1400/2100 boost: enabled cores:
    1: 2775 2: 1400 3: 1400 4: 1400 5: 1400 6: 1400 7: 1400 8: 2100
    bogomips: 33599
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
  Device-1: AMD Picasso/Raven 2 [Radeon Vega Series / Radeon Mobile Series]
    driver: amdgpu v: kernel arch: GCN-5 pcie: speed: 8 GT/s lanes: 16 ports:
    active: DP-2 empty: DP-1,HDMI-A-1 bus-ID: 05:00.0 chip-ID: 1002:15d8
    class-ID: 0300 temp: 69.0 C
  Display: wayland server: X.org v: 1.21.1.11 with: Xwayland v: 23.2.6
    compositor: gnome-shell driver: X: loaded: amdgpu
    unloaded: fbdev,modesetting,radeon,vesa dri: radeonsi gpu: amdgpu
    display-ID: 0
  Monitor-1: DP-2 model: Samsung SyncMaster serial: <filter> res: 1920x1080
    dpi: 102 size: 477x268mm (18.78x10.55") diag: 547mm (21.5") modes:
    max: 1920x1080 min: 640x480
  API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
    device: 1 drv: swrast gbm: drv: kms_swrast surfaceless: drv: radeonsi
    wayland: drv: radeonsi x11: drv: radeonsi
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa
    v: 25.0.7-0ubuntu0.24.04.2 glx-v: 1.4 direct-render: yes renderer: AMD
    Radeon Vega Mobile Gfx (radeonsi raven ACO DRM 3.61 6.14.0-36-generic)
    device-ID: 1002:15d8 display-ID: :0.0
Audio:
  Device-1: AMD Raven/Raven2/Fenghuang HDMI/DP Audio driver: N/A pcie:
    speed: 8 GT/s lanes: 16 bus-ID: 05:00.1 chip-ID: 1002:15de class-ID: 0403
  Device-2: AMD Family 17h/19h HD Audio vendor: Conexant Systems driver: N/A
    pcie: speed: 8 GT/s lanes: 16 bus-ID: 05:00.6 chip-ID: 1022:15e3
    class-ID: 0403
  Device-3: AKAI Professional M.I. MPK mini 3
    driver: hid-generic,snd-usb-audio,usbhid type: USB rev: 2.0 speed: 12 Mb/s
    lanes: 1 bus-ID: 1-2:3 chip-ID: 09e8:0049 class-ID: 0103
  Device-4: Mark of the Unicorn M2 driver: cdc_acm,snd-usb-audio type: USB
    rev: 2.0 speed: 480 Mb/s lanes: 1 bus-ID: 3-1:2 chip-ID: 07fd:000b
    class-ID: 0a00 serial: <filter>
  API: ALSA v: k6.14.0-36-generic status: kernel-api
  Server-1: JACK v: 1.9.21 status: off with: a2jmidid status: off
  Server-2: PipeWire v: 1.0.7 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    4: pw-jack type: plugin
Network:
  Device-1: Realtek RTL8822CE 802.11ac PCIe Wireless Network Adapter
    driver: rtw_8822ce v: N/A pcie: speed: 2.5 GT/s lanes: 1 port: f000
    bus-ID: 01:00.0 chip-ID: 10ec:c822 class-ID: 0280
  IF: wlp1s0 state: down mac: <filter>
  Device-2: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
    driver: r8169 v: kernel pcie: speed: 2.5 GT/s lanes: 1 port: e000
    bus-ID: 02:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: eno1 state: up speed: 1000 Mbps duplex: full mac: <filter>
  Device-3: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
    driver: r8169 v: kernel pcie: speed: 2.5 GT/s lanes: 1 port: d000
    bus-ID: 04:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp4s0 state: down mac: <filter>
  Device-4: Realtek RTL8153 Gigabit Ethernet Adapter driver: r8152 type: USB
    rev: 3.0 speed: 5 Gb/s lanes: 1 bus-ID: 2-1.4:3 chip-ID: 0bda:8153
    class-ID: 0000 serial: <filter>
  IF: enx00e04cacfeea state: down mac: <filter>
Bluetooth:
  Device-1: Realtek Bluetooth Radio driver: btusb v: 0.8 type: USB rev: 1.0
    speed: 12 Mb/s lanes: 1 bus-ID: 3-2:3 chip-ID: 0bda:c822 class-ID: e001
    serial: <filter>
  Report: hciconfig ID: hci0 rfk-id: 0 state: down
    bt-service: enabled,running rfk-block: hardware: no software: yes
    address: <filter>
Drives:
  Local Storage: total: 476.94 GiB used: 49.05 GiB (10.3%)
  ID-1: /dev/nvme0n1 vendor: AirDisk model: 512GB SSD size: 476.94 GiB
    speed: 31.6 Gb/s lanes: 4 tech: SSD serial: <filter> fw-rev: SN26890
    temp: 41.9 C scheme: GPT
Partition:
  ID-1: / size: 83.92 GiB used: 11.01 GiB (13.1%) fs: ext4 dev: /dev/nvme0n1p2
  ID-2: /boot/efi size: 96 MiB used: 36.6 MiB (38.2%) fs: vfat
    dev: /dev/nvme0n1p1
  ID-3: /home size: 368.05 GiB used: 38.01 GiB (10.3%) fs: ext4
    dev: /dev/nvme0n1p4
Swap:
  ID-1: swap-1 type: partition size: 15.62 GiB used: 0 KiB (0.0%) priority: -2
    dev: /dev/nvme0n1p3
USB:
  Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 4 rev: 2.0
    speed: 480 Mb/s lanes: 1 chip-ID: 1d6b:0002 class-ID: 0900
  Hub-2: 1-1:2 info: VIA Labs VL813 Hub ports: 4 rev: 2.1 speed: 480 Mb/s
    lanes: 1 chip-ID: 2109:2813 class-ID: 0900
  Hub-3: 1-1.3:4 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s
    lanes: 1 power: 100mA chip-ID: 05e3:0618 class-ID: 0900
  Device-1: 1-1.3.1:6 info: Genesys Logic micros Reader type: mass storage
    driver: usb-storage interfaces: 1 rev: 2.0 speed: 480 Mb/s lanes: 1
    power: 98mA chip-ID: 05e3:0752 class-ID: 0806
  Device-2: 1-1.3.3:7 info: VIA Labs USB 2.0 BILLBOARD type: billboard
    driver: N/A interfaces: 1 rev: 2.0 speed: 480 Mb/s lanes: 1 power: 100mA
    chip-ID: 2109:0100 class-ID: 1100 serial: <filter>
  Device-3: 1-2:3 info: AKAI Professional M.I. MPK mini 3 type: HID,audio
    driver: hid-generic,snd-usb-audio,usbhid interfaces: 3 rev: 2.0
    speed: 12 Mb/s lanes: 1 power: 500mA chip-ID: 09e8:0049 class-ID: 0103
  Hub-4: 1-3:5 info: Genesys Logic Logitech G110 Hub ports: 4 rev: 2.0
    speed: 480 Mb/s lanes: 1 power: 500mA chip-ID: 05e3:0607 class-ID: 0900
  Device-1: 1-3.1:8 info: Logitech Gaming Keyboard G110 G-keys
    type: keyboard,HID driver: hid-generic,usbhid interfaces: 2 rev: 2.0
    speed: 1.5 Mb/s lanes: 1 power: 100mA chip-ID: 046d:c22b class-ID: 0300
  Device-2: 1-3.3:9 info: Logitech Gaming Keyboard G110 type: keyboard,HID
    driver: hid-generic,usbhid interfaces: 2 rev: 2.0 speed: 1.5 Mb/s lanes: 1
    power: 100mA chip-ID: 046d:c22a class-ID: 0300
  Device-3: 1-3.4:10 info: HP HP 280/285 Wireless Mouse type: mouse
    driver: hid-generic,usbhid interfaces: 1 rev: 2.0 speed: 12 Mb/s lanes: 1
    power: 100mA chip-ID: 03f0:6f4a class-ID: 0301
  Hub-5: 2-0:1 info: super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
    lanes: 1 chip-ID: 1d6b:0003 class-ID: 0900
  Hub-6: 2-1:2 info: VIA Labs VL813 Hub ports: 4 rev: 3.0 speed: 5 Gb/s
    lanes: 1 chip-ID: 2109:0813 class-ID: 0900
  Device-1: 2-1.4:3 info: Realtek RTL8153 Gigabit Ethernet Adapter
    type: Network driver: r8152 interfaces: 1 rev: 3.0 speed: 5 Gb/s lanes: 1
    power: 288mA chip-ID: 0bda:8153 class-ID: 0000 serial: <filter>
  Hub-7: 3-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0
    speed: 480 Mb/s lanes: 1 chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 3-1:2 info: Mark of the Unicorn M2
    type: audio,abstract (modem),CDC-data driver: cdc_acm,snd-usb-audio
    interfaces: 7 rev: 2.0 speed: 480 Mb/s lanes: 1 power: 500mA
    chip-ID: 07fd:000b class-ID: 0a00 serial: <filter>
  Device-2: 3-2:3 info: Realtek Bluetooth Radio type: bluetooth
    driver: btusb interfaces: 2 rev: 1.0 speed: 12 Mb/s lanes: 1 power: 500mA
    chip-ID: 0bda:c822 class-ID: e001 serial: <filter>
  Hub-8: 4-0:1 info: super-speed hub ports: 1 rev: 3.1 speed: 10 Gb/s
    lanes: 1 chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
  System Temperatures: cpu: 68.9 C mobo: N/A gpu: amdgpu temp: 68.0 C
  Fan Speeds (rpm): N/A
Repos:
  Packages: 1910 pm: dpkg pkgs: 1899 pm: snap pkgs: 11
  No active apt repos in: /etc/apt/sources.list
  Active apt repos in: /etc/apt/sources.list.d/kxstudio-debian-ppas-2.list
    1: deb http://ppa.launchpad.net/kxstudio-debian/libs/ubuntu focal main
    2: deb http://ppa.launchpad.net/kxstudio-debian/plugins/ubuntu focal main
    3: deb http://ppa.launchpad.net/kxstudio-debian/apps/ubuntu focal main
    4: deb http://ppa.launchpad.net/kxstudio-debian/kxstudio/ubuntu focal main
  Active apt repos in: /etc/apt/sources.list.d/kxstudio-debian-ppas.list
    1: deb http://ppa.launchpad.net/kxstudio-debian/libs/ubuntu bionic main
    2: deb http://ppa.launchpad.net/kxstudio-debian/music/ubuntu bionic main
    3: deb http://ppa.launchpad.net/kxstudio-debian/plugins/ubuntu bionic main
    4: deb http://ppa.launchpad.net/kxstudio-debian/apps/ubuntu bionic main
    5: deb http://ppa.launchpad.net/kxstudio-debian/kxstudio/ubuntu bionic main
  Active apt repos in: /etc/apt/sources.list.d/pipewire-debian-ubuntu-pipewire-upstream-noble.sources
    1: deb https://ppa.launchpadcontent.net/pipewire-debian/pipewire-upstream/ubuntu/ noble main
  Active apt repos in: /etc/apt/sources.list.d/pipewire-debian-ubuntu-wireplumber-upstream-noble.sources
    1: deb https://ppa.launchpadcontent.net/pipewire-debian/wireplumber-upstream/ubuntu/ noble main
  Active apt repos in: /etc/apt/sources.list.d/ubuntu-esm-apps.sources
    1: deb https://esm.ubuntu.com/apps/ubuntu noble-apps-security main
  Active apt repos in: /etc/apt/sources.list.d/ubuntu-esm-infra.sources
    1: deb https://esm.ubuntu.com/infra/ubuntu noble-infra-security main
  Active apt repos in: /etc/apt/sources.list.d/ubuntu.sources
    1: deb http://archive.ubuntu.com/ubuntu noble noble-updates noble-backports noble-proposed main restricted universe multiverse
    2: deb http://security.ubuntu.com/ubuntu/ noble-security main restricted universe multiverse
Info:
  Memory: total: 12 GiB note: est. available: 12.6 GiB used: 2.07 GiB (16.4%)
  Processes: 357 Power: uptime: 4h 34m states: freeze,mem,disk suspend: deep
    wakeups: 0 hibernate: platform Init: systemd v: 255 target: graphical (5)
    default: graphical
  Compilers: gcc: 13.3.0 Shell: Bash v: 5.2.21 running-in: gnome-terminal
    inxi: 3.3.34

please let me know if you need further informations

Thank you

#2

Sounds like you are using a buggy LV2 plugin. Some use properties (as opposed to control ports) and the plugin(s) in question does not define then in the .ttl meta-data file.

Thanks for the heads up though, optimized Ardour builds should not print that message.

#3

should I investigate on such LV2 plugin?
In Ardour-log I find:

2025-11-22T18:28:51 [WARNING]: LV2<http://kxstudio.sf.net/carla/plugins/carlapatchbaycv>: Port 7 ('CV Input 1') has unsupported data type.
2025-11-22T18:28:51 [WARNING]: LV2<http://kxstudio.sf.net/carla/plugins/carlapatchbaycv>: Port 8 ('CV Input 2') has unsupported data type.
2025-11-22T18:28:51 [WARNING]: LV2<http://kxstudio.sf.net/carla/plugins/carlapatchbaycv>: Port 9 ('CV Input 3') has unsupported data type.
2025-11-22T18:28:51 [WARNING]: LV2<http://kxstudio.sf.net/carla/plugins/carlapatchbaycv>: Port 10 ('CV Input 4') has unsupported data type.
2025-11-22T18:28:51 [WARNING]: LV2<http://kxstudio.sf.net/carla/plugins/carlapatchbaycv>: Port 11 ('CV Input 5') has unsupported data type.
2025-11-22T18:28:51 [WARNING]: LV2<http://kxstudio.sf.net/carla/plugins/carlapatchbaycv>: Port 12 ('CV Output 1') has unsupported data type.
2025-11-22T18:28:51 [WARNING]: LV2<http://kxstudio.sf.net/carla/plugins/carlapatchbaycv>: Port 13 ('CV Output 2') has unsupported data type.
2025-11-22T18:28:51 [WARNING]: LV2<http://kxstudio.sf.net/carla/plugins/carlapatchbaycv>: Port 14 ('CV Output 3') has unsupported data type.
2025-11-22T18:28:51 [WARNING]: LV2<http://kxstudio.sf.net/carla/plugins/carlapatchbaycv>: Port 15 ('CV Output 4') has unsupported data type.
2025-11-22T18:28:51 [WARNING]: LV2<http://kxstudio.sf.net/carla/plugins/carlapatchbaycv>: Port 16 ('CV Output 5') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal>: Port 26 ('CV Output 1') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal>: Port 27 ('CV Output 2') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal>: Port 28 ('CV Output 3') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal>: Port 29 ('CV Output 4') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal>: Port 30 ('CV Output 5') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal>: Port 31 ('CV Output 6') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal>: Port 32 ('CV Output 7') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal>: Port 33 ('CV Output 8') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal>: Port 34 ('CV Output 9') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal>: Port 35 ('CV Output 10') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal#mini>: Port 9 ('CV Output 1') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal#mini>: Port 10 ('CV Output 2') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal#mini>: Port 11 ('CV Output 3') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal#mini>: Port 12 ('CV Output 4') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<https://distrho.kx.studio/plugins/cardinal#mini>: Port 13 ('CV Output 5') has unsupported data type.
2025-11-22T18:28:55 [WARNING]: LV2<urn:juce:Vex>: Unsupported required LV2 feature: 'http://lv2plug.in/ns/ext/buf-size#fixedBlockLength'.

is it something related?
thanks @x42

#4

No. that’s unrelated to the issue at hand.

Those plugins have CV (Control Voltage) Ports (modular synth related). They are well defined, but Ardour does not support CV.

#5

FYI,
maybe I have found the culprit: I deleted vex.lv2, which gave me error in the plugin manager, and the warnings no longer appear in journalctl or dmesg.
Thanks

1 Like
#6

Sad to say but unfortunately I’m having the same problems with the suite

LSP Plugin: Installed version: 1.2.24

on my system I can reproduce the problem this way:

I open an existing project →
I insert on an audio track (mono in my case being a bassline) LSP Graphic Equalizer x16 mono LV2
or, on a stereo track, LSP Parametric Equalizer x16 stereo (LV2) →
I play the track →

I launch on the terminal
sudo journalctl | grep "Ardour"

and I get a lot of lines with the warning
Ardour-Ardour_8.12.0.desktop[30226]: warning: patch:Set for unknown property

if I delete the plugin the warning no longer appears

please note: on the same project I also have active:

  • X42 instrument tuner
  • bass amp by airwindows (VST)
  • bass drive by airwindows (VST)
  • set be free DSP (LV2)
  • zynaddsubFX (LV2)
  • guitar chorus by airwindows (VST)
  • Midi chord, midi Strum and many others that do not cause problems

I don’t rule out the possibility that it is a problem with my configuration, so if someone can kindly try to reproduce the problem I would be grateful

as always, thanks

#7

I believe that is a known problem corrected in 1.2.25.

#8

Thanks, I wasn’t aware of that, I’ll update

#9

Hey @ccaudle , your suggestion solved the issue.

I really appreciate