Cannot listen to a USB PNP Audio Device input

[Javier Perez]

Hi.
I got a USB tape player to mp3 to convert some old tapes I had lying around.
When I connect the tape player to the USB port it is recognized as a USB
PNP Audio Device.

Nevertheless, when I press play, I cannot hear any audio. Audacity cannot
listen to it either. My Bluetooth headphones work fine

I searched google about how am I supposed to configure it but could not
find anything.

How can I troubleshoot this? I got lost with the audio subsystem several
versions ago. I am using Fedora 33

This is what I get on the journal when I plug the USB cable

============== JOURNAL OUTPUT ==========================
Jul 04 01:54:32 pepewin.localdomain kernel: usb 3-2: new full-speed USB
device number 14 using xhci_hcd
Jul 04 01:54:32 pepewin.localdomain kernel: usb 3-2: New USB device found,
idVendor=e5b7, idProduct=0811, bcdDevice= 1.00
Jul 04 01:54:32 pepewin.localdomain kernel: usb 3-2: New USB device
strings: Mfr=1, Product=2, SerialNumber=3
Jul 04 01:54:32 pepewin.localdomain kernel: usb 3-2: Product: USB PnP Audio
Device
Jul 04 01:54:32 pepewin.localdomain kernel: usb 3-2: Manufacturer: ZhuHai
JieLi Technology
Jul 04 01:54:32 pepewin.localdomain kernel: usb 3-2: SerialNumber: 20160823
Jul 04 01:54:32 pepewin.localdomain kernel: usb-storage 3-2:1.0: USB Mass
Storage device detected
Jul 04 01:54:32 pepewin.localdomain kernel: scsi host6: usb-storage 3-2:1.0
Jul 04 01:54:32 pepewin.localdomain kernel: usb 3-2: 9:1: bogus dB values
(-12800/-12700), disabling dB reporting
Jul 04 01:54:32 pepewin.localdomain kernel: input: ZhuHai JieLi Technology
USB PnP Audio Device as
/devices/pci0000:00/0000:00:14.0/usb3/3-2/3-2:1.4/0003:E5B7:0811.000E/input/input37
Jul 04 01:54:32 pepewin.localdomain kernel: hid-generic
0003:E5B7:0811.000E: input,hidraw0: USB HID v2.01 Device [ZhuHai JieLi
Technology USB PnP Audio Device] on usb-0000:00:14.0-2/input4
Jul 04 01:54:32 pepewin.localdomain mtp-probe[7226]: checking bus 3, device
14: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-2"
Jul 04 01:54:32 pepewin.localdomain mtp-probe[7226]: bus: 3, device: 14 was
not an MTP device
Jul 04 01:54:32 pepewin.localdomain mtp-probe[7253]: checking bus 3, device
14: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-2"
Jul 04 01:54:32 pepewin.localdomain mtp-probe[7253]: bus: 3, device: 14 was
not an MTP device
Jul 04 01:54:32 pepewin.localdomain rtkit-daemon[1038]: Supervising 6
threads of 4 processes of 1 users.
Jul 04 01:54:32 pepewin.localdomain rtkit-daemon[1038]: Successfully made
thread 7258 of process 2945 (/usr/bin/pulseaudio) owned by '1000' RT at
priority 5.
Jul 04 01:54:32 pepewin.localdomain rtkit-daemon[1038]: Supervising 7
threads of 4 processes of 1 users.
Jul 04 01:54:33 pepewin.localdomain kernel: scsi 6:0:0:0: Direct-Access
OK                             PQ: 0 ANSI: 0
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: Attached scsi
generic sg6 type 0
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Unit Not Ready
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Sense Key :
Hardware Error [current]
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Add. Sense:
No additional sense information
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Read
Capacity(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Sense Key :
Hardware Error [current]
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Add. Sense:
No additional sense information
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] 0 512-byte
logical blocks: (0 B/0 B)
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] 0-byte
physical blocks
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Write Protect
is off
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Mode Sense:
00 00 00 00
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Asking for
cache data failed
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Assuming
drive cache: write through
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Unit Not Ready
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Sense Key :
Hardware Error [current]
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Add. Sense:
No additional sense information
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Attached SCSI
removable disk
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Unit Not Ready
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Sense Key :
Hardware Error [current]
Jul 04 01:54:33 pepewin.localdomain kernel: sd 6:0:0:0: [sdf] Add. Sense:
No additional sense information
======================== JOURNAL OUTPUT END =====================
-- 
------------------------------
 /\_/\
 |O O|  pepebuho(a)gmail.com
 ~~~~     Javier Perez
 ~~~~          While the night runs
 ~~~~          toward the day...
  m m       Pepebuho watches
                from his high perch.

[Samuel Sieb]

On 7/4/21 12:03 AM, Javier Perez wrote:
>  I got a USB tape player to mp3 to convert some old tapes I had lying
> around.
>  When I connect the tape player to the USB port it is recognized as a USB 
>  PNP Audio Device.
>  
>  Nevertheless, when I press play, I cannot hear any audio. Audacity 
>  cannot listen to it either. My Bluetooth headphones work fine 
The tape player will appear as a microphone, so the audio won't 
automatically go to your speakers.  You would need to setup a loopback 
for that.

The problem with audacity is that it doesn't really understand 
Pulseaudio.  Click on the spot to make it start monitoring, then use 
pavucontrol to switch the input device.  Then it will work.

[Javier Perez]

Hi, sorry, it is still not working.
In Audacity I cannot see the Recording Device

In Pavucontrol, I can see the device in configuration using the profile
"Analog Stereo Input}" and it shows on the tab Input devices as Port:
Microphone

But in Audacity, it does not show up as part of the "Recording" Devices. In
fact, it shows on the Playback devices!

How can I fix this?

Thanks

Using Audacity-freeworld


On Sun, Jul 4, 2021 at 3:33 AM Samuel Sieb <samuel(a)sieb.net&gt; wrote:

>  On 7/4/21 12:03 AM, Javier Perez wrote:
>  > I got a USB tape player to mp3 to convert some old tapes I had lying
>  around.
>  > When I connect the tape player to the USB port it is recognized as a USB
>  > PNP Audio Device.
>  >
>  > Nevertheless, when I press play, I cannot hear any audio. Audacity
>  > cannot listen to it either. My Bluetooth headphones work fine
>
>  The tape player will appear as a microphone, so the audio won't
>  automatically go to your speakers.  You would need to setup a loopback
>  for that.
>
>  The problem with audacity is that it doesn't really understand
>  Pulseaudio.  Click on the spot to make it start monitoring, then use
>  pavucontrol to switch the input device.  Then it will work.
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-- 
------------------------------
 /\_/\
 |O O|  pepebuho(a)gmail.com
 ~~~~     Javier Perez
 ~~~~          While the night runs
 ~~~~          toward the day...
  m m       Pepebuho watches
                from his high perch.

[Samuel Sieb]

On 2021-07-18 11:00 a.m., Javier Perez wrote:
>  In Audacity I cannot see the Recording Device 
No, you can't.  That's why you have to use pavucontrol.
In audacity, you should pick "ALSA" and "default" for the recording 
options.  Then beside the microphone icon, there's a meter with "Click 
to Start Monitoring" written on it.  Click that.  Then go to 
pavucontrol's recording tab.  There should be an entry for audacity with 
a dropdown to the right.  In that dropdown, pick the USB device.  Now 
audacity will be recording from that.