[gentoo-user] USB sound card not recognized as capture device

[edes]

Hello list,

I have a Sound Devices that always worked perfectly fine out of the box as
a generic USB device, without need of asoundrc or anything.

But now for some reason it works as playback device, but is not recognized
as capture device.

Below I pasted the output of the alsa_info script, where you can see that
arecord -l returns nothing and there is no capture device under /dev/snd.

The card itself works fine on other machines, including one with a very
similar gentoo system installed by myself, also without asoundrc or any
special configuration.

Any help would be greatly appreciated, because I have no idea where to
start looking.



upload=true&script=true&cardinfo=
!!################################
!!ALSA Information Script v 0.4.64
!!################################

!!Script ran on: Sat Jan 18 03:33:25 UTC 2020


!!Linux Distribution
!!------------------

Gentoo Base System release 2.6 NAME=Gentoo ID=gentoo
PRETTY_NAME="Gentoo/Linux" HOME_URL="https://www.gentoo.org/"
SUPPORT_URL="https://www.gentoo.org/support/"
BUG_REPORT_URL="https://bugs.gentoo.org/"


!!DMI Information
!!---------------

Manufacturer:
Product Name:
Product Version:
Firmware Version:
Board Vendor:
Board Name:


!!ACPI Device Status Information
!!---------------

/sys/bus/acpi/devices/ACPI0004:00/status 	 15
/sys/bus/acpi/devices/LNXCPU:00/status 	 15
/sys/bus/acpi/devices/LNXCPU:01/status 	 15
/sys/bus/acpi/devices/LNXCPU:02/status 	 15
/sys/bus/acpi/devices/LNXCPU:03/status 	 15
/sys/bus/acpi/devices/LNXCPU:04/status 	 15
/sys/bus/acpi/devices/LNXCPU:05/status 	 15
/sys/bus/acpi/devices/LNXCPU:06/status 	 15
/sys/bus/acpi/devices/LNXCPU:07/status 	 15
/sys/bus/acpi/devices/LNXCPU:08/status 	 15
/sys/bus/acpi/devices/LNXCPU:09/status 	 15
/sys/bus/acpi/devices/LNXCPU:0a/status 	 15
/sys/bus/acpi/devices/LNXCPU:0b/status 	 15
/sys/bus/acpi/devices/PNP0103:00/status 	 15
/sys/bus/acpi/devices/PNP0501:00/status 	 15
/sys/bus/acpi/devices/PNP0A03:03/status 	 15
/sys/bus/acpi/devices/PNP0C0C:00/status 	 11
/sys/bus/acpi/devices/PNP0C0F:00/status 	 9
/sys/bus/acpi/devices/PNP0C0F:01/status 	 9
/sys/bus/acpi/devices/PNP0C0F:02/status 	 9
/sys/bus/acpi/devices/PNP0C0F:03/status 	 9
/sys/bus/acpi/devices/PNP0C0F:04/status 	 9
/sys/bus/acpi/devices/PNP0C0F:05/status 	 9
/sys/bus/acpi/devices/PNP0C0F:06/status 	 9
/sys/bus/acpi/devices/PNP0C0F:07/status 	 9
/sys/bus/acpi/devices/device:10/status 	 15
/sys/bus/acpi/devices/device:11/status 	 15
/sys/bus/acpi/devices/device:12/status 	 15
/sys/bus/acpi/devices/device:13/status 	 15
/sys/bus/acpi/devices/device:14/status 	 15
/sys/bus/acpi/devices/device:15/status 	 15
/sys/bus/acpi/devices/device:16/status 	 15
/sys/bus/acpi/devices/device:17/status 	 15
/sys/bus/acpi/devices/device:18/status 	 15
/sys/bus/acpi/devices/device:19/status 	 15
/sys/bus/acpi/devices/device:1e/status 	 15
/sys/bus/acpi/devices/device:1f/status 	 15
/sys/bus/acpi/devices/device:20/status 	 15
/sys/bus/acpi/devices/device:21/status 	 15
/sys/bus/acpi/devices/device:22/status 	 15
/sys/bus/acpi/devices/device:23/status 	 15
/sys/bus/acpi/devices/device:24/status 	 15
/sys/bus/acpi/devices/device:25/status 	 15
/sys/bus/acpi/devices/device:26/status 	 15
/sys/bus/acpi/devices/device:27/status 	 15


!!Kernel Information
!!------------------

Kernel release:    5.4.12-gentoo
Operating System:  GNU/Linux
Architecture:      x86_64
Processor:         Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz
SMP Enabled:       Yes


!!ALSA Version
!!------------

Driver version:     k5.4.12-gentoo
Library version:    1.2.1.2
Utilities version:  1.2.1


!!Loaded ALSA modules
!!-------------------



!!Sound Servers on this system
!!----------------------------

Jack:
      Installed - Yes (/usr/bin/jackd)
      Running - No


!!Soundcards recognised by ALSA
!!-----------------------------

 0 [USBPre2        ]: USB-Audio - USBPre2
                      Sound Devices USBPre2 at usb-0000:00:14.0-10.3, high
 speed


!!PCI Soundcards installed in the system
!!--------------------------------------

00:1b.0 Audio device [0403]: Intel Corporation C610/X99 series chipset HD
Audio Controller [8086:8d20] (rev 05) Subsystem: ASUSTeK Computer Inc.
C610/X99 series chipset HD Audio Controller [1043:8637] 01:00.1 Audio
device [0403]: NVIDIA Corporation High Definition Audio Controller
[10de:0be3] (rev a1) Subsystem: eVga.com. Corp. High Definition Audio
Controller [3842:1303]


!!Loaded sound module options
!!---------------------------


!!USB Mixer information
!!---------------------
--startcollapse--

USB Mixer: usb_id=0x09260202, ctrlif=0, ctlerr=0
Card: Sound Devices USBPre2 at usb-0000:00:14.0-10.3, high speed
--endcollapse--


!!ALSA Device nodes
!!-----------------

crw-rw----+ 1 root audio 116,  0 Jan 18 00:25 /dev/snd/controlC0
crw-rw----+ 1 root audio 116, 16 Jan 18 00:25 /dev/snd/pcmC0D0p
crw-rw----+ 1 root audio 116,  1 Jan 18 00:25 /dev/snd/seq
crw-rw----+ 1 root audio 116, 33 Jan 18 00:25 /dev/snd/timer

/dev/snd/by-id:
total 0
drwxr-xr-x 2 root root  60 Jan 18 00:25 .
drwxr-xr-x 4 root root 160 Jan 18 00:25 ..
lrwxrwxrwx 1 root root  12 Jan 18 00:25
usb-Sound_Devices_USBPre2_HB1116132005-00 -> ../controlC0

/dev/snd/by-path:
total 0
drwxr-xr-x 2 root root  60 Jan 18 00:25 .
drwxr-xr-x 4 root root 160 Jan 18 00:25 ..
lrwxrwxrwx 1 root root  12 Jan 18 00:25 pci-0000:00:14.0-usb-0:10.3:1.0 ->
../controlC0


!!Aplay/Arecord output
!!--------------------

APLAY

**** List of PLAYBACK Hardware Devices ****
card 0: USBPre2 [USBPre2], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

ARECORD

**** List of CAPTURE Hardware Devices ****

!!Amixer output
!!-------------

!!-------Mixer controls for card USBPre2

Card hw:0 'USBPre2'/'Sound Devices USBPre2 at usb-0000:00:14.0-10.3, high
speed' Mixer name	: 'USB Mixer'
  Components	: 'USB0926:0202'
  Controls      : 2
  Simple ctrls  : 0


!!Alsactl output
!!--------------

--startcollapse--
state.USBPre2 {
	control.1 {
		iface PCM
		name 'Playback Channel Map'
		value.0 0
		value.1 0
		comment {
			access read
			type INTEGER
			count 2
			range '0 - 36'
		}
	}
	control.2 {
		iface CARD
		name 'Keep Interface'
		value false
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
}
--endcollapse--


!!All Loaded Modules
!!------------------



!!ALSA/HDA dmesg
!!--------------

[    0.374260] ACPI: Added _OSI(Linux-Dell-Video)
[    0.374260] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[    0.374260] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
--
[    2.497368] pci 0000:01:00.0: enabling Extended Tags
[    2.497380] pci 0000:01:00.0: Enabling HDA controller
[    2.497384] pci 0000:01:00.0: BAR 3: assigned to efifb
--
[    3.792301] usbhid: USB HID core driver
[    3.793056] usbcore: registered new interface driver snd-usb-audio
[    3.793676] Initializing XFRM netlink socket
--
[    3.799676] registered taskstats version 1
[    3.800488] ALSA device list:
[    3.800968]   No soundcards found.
[    3.826593] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)