Here are some messages from connection to speaker-test

Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: new full-speed USB device number 11 
using xhci_hcd
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch mtp-probe[23097]: checking bus 3, device 11: "/sys/
devices/pci0000:00/0000:00:14.0/usb3/3-3"
Δεκ 05 15:10:10 dell-arch mtp-probe[23097]: bus: 3, device: 11 was not an MTP 
device
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch kdeinit5[686]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1/pcmC1D0p"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1/pcmC1D0p"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch kdeinit5[686]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1/dmmidi1"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1/dmmidi1"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1/midi1"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1/midi1"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch kdeinit5[686]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1/pcmC1D0c"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1/pcmC1D0c"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1/midiC1D0"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1/midiC1D0"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch kdeinit5[686]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1/controlC1"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch dolphin[23033]: org.kde.baloo: "/org/kde/solid/udev/
sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/sound/card1/controlC1"
Δεκ 05 15:10:10 dell-arch dolphin[23033]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch kdeinit5[686]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch kdeinit5[686]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch kdeinit5[686]: QObject::connect: invalid null 
parameter
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 1:1: cannot set freq 44100 to ep 
0x81
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch kernel: usb 3-3: 2:1: cannot set freq 44100 to ep 
0x2
Δεκ 05 15:10:10 dell-arch pulseaudio[748]: E: [pulseaudio] module-alsa-card.c: 
Failed to find a working profile.
Δεκ 05 15:10:10 dell-arch pulseaudio[748]: E: [pulseaudio] module.c: Failed to 
load module "module-alsa-card" (argument: "device_id="1" name="usb-
Hotone_Ravo-00" card_name="alsa_card.usb-Hotone_Ravo-00" namereg_fail=false 
tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes 
card_properties="module-udev-detect.discovered=1""): initialization failed.
Δεκ 05 15:10:10 dell-arch pulseaudio[748]: W: [pulseaudio] module-udev-
detect.c: Tried to configure /devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/
sound/card1 (alsa_card.usb-Hotone_Ravo-00) more often than 5 times in 10s

On Δευτέρα, 5 Δεκεμβρίου 2016 9:10:37 Π.Μ. EET Clemens Ladisch wrote:
> Dimitris Damigos wrote:
> > Playback open error: -32,Broken pipe
> 
> This should have resulted in an error message in the system log.
> 
> 
> Regards,
> Clemens



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