Sejak 6 jam saya mencari di web dan mencoba untuk mendapatkan headphone USB Bowers & Wilkins PX, yang berfungsi dengan baik sebelum beberapa pembaruan, untuk bekerja - tanpa hasil.
KUBUNTU 18.04 KDE-Plasmaversion: 5.12.6 KDE-Framework-Versi: 5.44.0 Qt-Version: 5.9.5 Kernel-Version: 4.15.0.39-generic
# tail -fn 100 /var/log/syslog
Nov 26 20:37:46 W540 kernel: [ 2318.093142] usb 2-9.2: new full-speed USB device number 12 using xhci_hcd
Nov 26 20:37:46 W540 kernel: [ 2318.253691] usb 2-9.2: New USB device found, idVendor=19b5, idProduct=0021
Nov 26 20:37:46 W540 kernel: [ 2318.253695] usb 2-9.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Nov 26 20:37:46 W540 kernel: [ 2318.253698] usb 2-9.2: Product: PX USB
Nov 26 20:37:46 W540 kernel: [ 2318.253700] usb 2-9.2: Manufacturer: Bowers & Wilkins
Nov 26 20:37:46 W540 kernel: [ 2318.253702] usb 2-9.2: SerialNumber: ABCDEF0123456789
Nov 26 20:37:46 W540 kernel: [ 2318.274581] snd-usb-audio: probe of 2-9.2:1.0 failed with error -22
Nov 26 20:37:46 W540 kernel: [ 2318.284691] usb 2-9.2: 2:1: cannot get min/max values for control 2 (id 2)
Nov 26 20:37:46 W540 kernel: [ 2318.284715] snd-usb-audio: probe of 2-9.2:1.1 failed with error -22
Nov 26 20:37:46 W540 kernel: [ 2318.288917] input: Bowers & Wilkins PX USB as /devices/pci0000:00/0000:00:14.0/usb2/2-9/2-9.2/2-9.2:1.2/0003:19B5:0021.000B/input/input22
Nov 26 20:37:46 W540 mtp-probe: checking bus 2, device 12: "/sys/devices/pci0000:00/0000:00:14.0/usb2/2-9/2-9.2"
Nov 26 20:37:46 W540 mtp-probe: bus: 2, device: 12 was not an MTP device
Nov 26 20:37:46 W540 kernel: [ 2318.345390] hid-generic 0003:19B5:0021.000B: input,hiddev0,hidraw0: USB HID v1.11 Device [Bowers & Wilkins PX USB] on usb-0000:00:14.0-9.2/input2
Nov 26 20:37:46 W540 upowerd[3694]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:14.0/usb2/2-9/2-9.2/2-9.2:1.2/0003:19B5:0021.000B
Nov 26 20:37:46 W540 upowerd[3694]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:14.0/usb2/2-9/2-9.2/2-9.2:1.2
Nov 26 20:37:46 W540 upowerd[3694]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:14.0/usb2/2-9/2-9.2
# lsusb
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 003: ID 174c:1351 ASMedia Technology Inc.
Bus 003 Device 002: ID 17ef:1010 Lenovo
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 011: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 002 Device 010: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 002 Device 009: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 002 Device 007: ID 0000:0000
Bus 002 Device 012: ID 19b5:0021 B & W Group
Bus 002 Device 008: ID 1235:8200 Focusrite-Novation
Bus 002 Device 003: ID 17ef:1010 Lenovo
Bus 002 Device 002: ID 058f:9540 Alcor Micro Corp. AU9540 Smartcard Reader
Bus 002 Device 006: ID 0765:5010 X-Rite, Inc.
Bus 002 Device 004: ID 8087:07dc Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
# lshw -c multimedia
*-multimedia:0
description: Audio device
product: Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller
vendor: Intel Corporation
physical id: 3
bus info: pci@0000:00:03.0
version: 06
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:34 memory:b4a30000-b4a33fff
*-usb:0
description: Audio device
product: Scarlett 2i4 USB
vendor: Focusrite
physical id: 1
bus info: usb@2:9.1
version: 4.1b
capabilities: usb-2.00 audio-control
configuration: driver=snd-usb-audio maxpower=500mA speed=480Mbit/s
*-usb:1
description: Audio device
product: PX USB
vendor: Bowers & Wilkins
physical id: 2
bus info: usb@2:9.2
version: 25.20
serial: ABCDEF0123456789
capabilities: usb-2.00 audio-control
configuration: driver=usbhid maxpower=500mA speed=12Mbit/s
*-multimedia:1
description: Audio device
product: 8 Series/C220 Series Chipset High Definition Audio Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:33 memory:b4a34000-b4a37fff
# lspci
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-LM (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d4)
00:1c.1 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #2 (rev d4)
00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d4)
00:1c.4 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #5 (rev d4)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation QM87 Express LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 04)
01:00.0 VGA compatible controller: NVIDIA Corporation GK106GLM [Quadro K2100M] (rev a1)
02:00.0 SD Host controller: O2 Micro, Inc. SD/MMC Card Reader Controller (rev 01)
03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83)
04:00.0 SATA controller: ASMedia Technology Inc. ASM1062 Serial ATA Controller (rev 01)
snd-usb-audio
adalah driver untuk antarmuka standar, kecuali headphone memerlukan kekhasan, itu harus kehabisan kotak. Hal-hal yang bisa salah adalah (1) perubahan dalam driver kernel, atau kekhasan baru yang tidak berfungsi untuk model Anda (apakah Anda meng-upgrade kernel Anda? Dari versi ke versi mana?), Atau (2) masalah perangkat keras dari berbagai jenis (akan sulit untuk di-debug).