Hi all, I am using a USB sound card(snd-usb-audio), and it fails while doing the audio recording "arecord: pcm_read:2032: read error: Input/output error". What could be the problem? and is there a workaround for this? $ arecord -l **** List of CAPTURE Hardware Devices **** card 1: BT_AG [BT_002], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 $ arecord --device hw:1,0 --channels 1 --format S16_LE --rate 32000_Hz x.wav Recording WAVE 'x.wav' : Signed 16 bit Little Endian, Rate 32000 Hz, Mono arecord: pcm_read:2032: read error: Input/output error -- Thanks, Sekhar
On Tue, Jun 08, 2021 at 04:20:07PM +0530, Muni Sekhar wrote:
Hi all,
I am using a USB sound card(snd-usb-audio), and it fails while doing the audio recording "arecord: pcm_read:2032: read error: Input/output error".
What could be the problem? and is there a workaround for this?
$ arecord -l **** List of CAPTURE Hardware Devices **** card 1: BT_AG [BT_002], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0
$ arecord --device hw:1,0 --channels 1 --format S16_LE --rate 32000_Hz x.wav Recording WAVE 'x.wav' : Signed 16 bit Little Endian, Rate 32000 Hz, Mono arecord: pcm_read:2032: read error: Input/output error
What kernel version is this, and what other kernel messages are printed when you plug your device in? thanks, greg k-h
On Tue, Jun 8, 2021 at 4:44 PM Greg KH <gregkh@linuxfoundation.org> wrote:
On Tue, Jun 08, 2021 at 04:20:07PM +0530, Muni Sekhar wrote:
Hi all,
I am using a USB sound card(snd-usb-audio), and it fails while doing the audio recording "arecord: pcm_read:2032: read error: Input/output error".
What could be the problem? and is there a workaround for this?
$ arecord -l **** List of CAPTURE Hardware Devices **** card 1: BT_AG [BT_002], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0
$ arecord --device hw:1,0 --channels 1 --format S16_LE --rate 32000_Hz
x.wav
Recording WAVE 'x.wav' : Signed 16 bit Little Endian, Rate 32000 Hz, Mono arecord: pcm_read:2032: read error: Input/output error
What kernel version is this, and what other kernel messages are printed when you plug your device in? [12932.016672] usb 2-1: USB disconnect, device number 5 [12932.016683] usb 2-1.1: USB disconnect, device number 6 [12962.085766] usb 2-1: new full-speed USB device number 7 using xhci_hcd [12962.275849] usb 2-1: New USB device found, idVendor=0a12, idProduct=4010 [12962.275861] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [12962.276538] usb 2-1: ep 0x81 - rounding interval to 1024 microframes, ep desc says 2040 microframes [12962.279699] hub 2-1:1.0: USB hub found [12962.280663] hub 2-1:1.0: 4 ports detected [12962.875024] usb 2-1.1: new full-speed USB device number 8 using xhci_hcd [12962.980977] usb 2-1.1: New USB device found, idVendor=0a12, idProduct=4007 [12962.980991] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=5 [12962.981000] usb 2-1.1: Product: BT_002 [12962.981008] usb 2-1.1: Manufacturer: Qualcomm [12962.981015] usb 2-1.1: SerialNumber: ABC4C25B [12962.992667] input: Qualcomm BT_002 as /devices/pci0000:00/0000:00:14.0/usb2/2-1/2-1.1/2-1.1:1.0/0003:0A12:4007.0003/input/input6 [12963.048083] hid-generic 0003:0A12:4007.0003: input,hiddev0,hidraw0: USB HID v1.11 Device [Qualcomm BT_002] on usb-0000:00:14.0-1.1/input0 [12963.066910] hid-generic 0003:0A12:4007.0004: hiddev0,hidraw1: USB HID v1.11 Device [Qualcomm BT_002] on usb-0000:00:14.0-1.1/input1
Same error (arecord: pcm_read:2032: read error: Input/output error) observed on 4.4, 4.15 and 5.4 kernel version.
thanks,
greg k-h
On Tue, Jun 08, 2021 at 05:44:42PM +0530, Muni Sekhar wrote:
On Tue, Jun 8, 2021 at 4:44 PM Greg KH <gregkh@linuxfoundation.org> wrote:
On Tue, Jun 08, 2021 at 04:20:07PM +0530, Muni Sekhar wrote:
Hi all,
I am using a USB sound card(snd-usb-audio), and it fails while doing the audio recording "arecord: pcm_read:2032: read error: Input/output error".
What could be the problem? and is there a workaround for this?
$ arecord -l **** List of CAPTURE Hardware Devices **** card 1: BT_AG [BT_002], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0
$ arecord --device hw:1,0 --channels 1 --format S16_LE --rate 32000_Hz
x.wav
Recording WAVE 'x.wav' : Signed 16 bit Little Endian, Rate 32000 Hz, Mono arecord: pcm_read:2032: read error: Input/output error
What kernel version is this, and what other kernel messages are printed when you plug your device in?
What kernel version is this?
[12932.016672] usb 2-1: USB disconnect, device number 5 [12932.016683] usb 2-1.1: USB disconnect, device number 6 [12962.085766] usb 2-1: new full-speed USB device number 7 using xhci_hcd [12962.275849] usb 2-1: New USB device found, idVendor=0a12, idProduct=4010 [12962.275861] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [12962.276538] usb 2-1: ep 0x81 - rounding interval to 1024 microframes, ep desc says 2040 microframes [12962.279699] hub 2-1:1.0: USB hub found [12962.280663] hub 2-1:1.0: 4 ports detected [12962.875024] usb 2-1.1: new full-speed USB device number 8 using xhci_hcd [12962.980977] usb 2-1.1: New USB device found, idVendor=0a12, idProduct=4007 [12962.980991] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=5 [12962.981000] usb 2-1.1: Product: BT_002 [12962.981008] usb 2-1.1: Manufacturer: Qualcomm [12962.981015] usb 2-1.1: SerialNumber: ABC4C25B [12962.992667] input: Qualcomm BT_002 as /devices/pci0000:00/0000:00:14.0/usb2/2-1/2-1.1/2-1.1:1.0/0003:0A12:4007.0003/input/input6 [12963.048083] hid-generic 0003:0A12:4007.0003: input,hiddev0,hidraw0: USB HID v1.11 Device [Qualcomm BT_002] on usb-0000:00:14.0-1.1/input0 [12963.066910] hid-generic 0003:0A12:4007.0004: hiddev0,hidraw1: USB HID v1.11 Device [Qualcomm BT_002] on usb-0000:00:14.0-1.1/input1
Same error (arecord: pcm_read:2032: read error: Input/output error) observed on 4.4, 4.15 and 5.4 kernel version.
What exact versions of these are you using? And what about the latest 5.12.y release? thanks, greg k-h
On Tue, Jun 8, 2021 at 6:02 PM Greg KH <gregkh@linuxfoundation.org> wrote:
On Tue, Jun 08, 2021 at 05:44:42PM +0530, Muni Sekhar wrote:
On Tue, Jun 8, 2021 at 4:44 PM Greg KH <gregkh@linuxfoundation.org> wrote:
On Tue, Jun 08, 2021 at 04:20:07PM +0530, Muni Sekhar wrote:
Hi all,
I am using a USB sound card(snd-usb-audio), and it fails while doing the audio recording "arecord: pcm_read:2032: read error: Input/output error".
What could be the problem? and is there a workaround for this?
$ arecord -l **** List of CAPTURE Hardware Devices **** card 1: BT_AG [BT_002], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0
$ arecord --device hw:1,0 --channels 1 --format S16_LE --rate 32000_Hz
x.wav
Recording WAVE 'x.wav' : Signed 16 bit Little Endian, Rate 32000 Hz, Mono arecord: pcm_read:2032: read error: Input/output error
What kernel version is this, and what other kernel messages are printed when you plug your device in?
What kernel version is this?
4.15.0-54-generic
[12932.016672] usb 2-1: USB disconnect, device number 5 [12932.016683] usb 2-1.1: USB disconnect, device number 6 [12962.085766] usb 2-1: new full-speed USB device number 7 using xhci_hcd [12962.275849] usb 2-1: New USB device found, idVendor=0a12, idProduct=4010 [12962.275861] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [12962.276538] usb 2-1: ep 0x81 - rounding interval to 1024 microframes, ep desc says 2040 microframes [12962.279699] hub 2-1:1.0: USB hub found [12962.280663] hub 2-1:1.0: 4 ports detected [12962.875024] usb 2-1.1: new full-speed USB device number 8 using xhci_hcd [12962.980977] usb 2-1.1: New USB device found, idVendor=0a12, idProduct=4007 [12962.980991] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=5 [12962.981000] usb 2-1.1: Product: BT_002 [12962.981008] usb 2-1.1: Manufacturer: Qualcomm [12962.981015] usb 2-1.1: SerialNumber: ABC4C25B [12962.992667] input: Qualcomm BT_002 as /devices/pci0000:00/0000:00:14.0/usb2/2-1/2-1.1/2-1.1:1.0/0003:0A12:4007.0003/input/input6 [12963.048083] hid-generic 0003:0A12:4007.0003: input,hiddev0,hidraw0: USB HID v1.11 Device [Qualcomm BT_002] on usb-0000:00:14.0-1.1/input0 [12963.066910] hid-generic 0003:0A12:4007.0004: hiddev0,hidraw1: USB HID v1.11 Device [Qualcomm BT_002] on usb-0000:00:14.0-1.1/input1
Same error (arecord: pcm_read:2032: read error: Input/output error) observed on 4.4, 4.15 and 5.4 kernel version.
What exact versions of these are you using?
4.4.0-66-generic 4.15.0-54-generic Ubuntu 20.04
And what about the latest 5.12.y release?
I don't have this test setup.
thanks,
greg k-h
-- Thanks, Sekhar
On Tue, Jun 08, 2021 at 06:15:57PM +0530, Muni Sekhar wrote:
On Tue, Jun 8, 2021 at 6:02 PM Greg KH <gregkh@linuxfoundation.org> wrote:
On Tue, Jun 08, 2021 at 05:44:42PM +0530, Muni Sekhar wrote:
On Tue, Jun 8, 2021 at 4:44 PM Greg KH <gregkh@linuxfoundation.org> wrote:
On Tue, Jun 08, 2021 at 04:20:07PM +0530, Muni Sekhar wrote:
Hi all,
I am using a USB sound card(snd-usb-audio), and it fails while doing the audio recording "arecord: pcm_read:2032: read error: Input/output error".
What could be the problem? and is there a workaround for this?
$ arecord -l **** List of CAPTURE Hardware Devices **** card 1: BT_AG [BT_002], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0
$ arecord --device hw:1,0 --channels 1 --format S16_LE --rate 32000_Hz
x.wav
Recording WAVE 'x.wav' : Signed 16 bit Little Endian, Rate 32000 Hz, Mono arecord: pcm_read:2032: read error: Input/output error
What kernel version is this, and what other kernel messages are printed when you plug your device in?
What kernel version is this?
4.15.0-54-generic
[12932.016672] usb 2-1: USB disconnect, device number 5 [12932.016683] usb 2-1.1: USB disconnect, device number 6 [12962.085766] usb 2-1: new full-speed USB device number 7 using xhci_hcd [12962.275849] usb 2-1: New USB device found, idVendor=0a12, idProduct=4010 [12962.275861] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [12962.276538] usb 2-1: ep 0x81 - rounding interval to 1024 microframes, ep desc says 2040 microframes [12962.279699] hub 2-1:1.0: USB hub found [12962.280663] hub 2-1:1.0: 4 ports detected [12962.875024] usb 2-1.1: new full-speed USB device number 8 using xhci_hcd [12962.980977] usb 2-1.1: New USB device found, idVendor=0a12, idProduct=4007 [12962.980991] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=5 [12962.981000] usb 2-1.1: Product: BT_002 [12962.981008] usb 2-1.1: Manufacturer: Qualcomm [12962.981015] usb 2-1.1: SerialNumber: ABC4C25B [12962.992667] input: Qualcomm BT_002 as /devices/pci0000:00/0000:00:14.0/usb2/2-1/2-1.1/2-1.1:1.0/0003:0A12:4007.0003/input/input6 [12963.048083] hid-generic 0003:0A12:4007.0003: input,hiddev0,hidraw0: USB HID v1.11 Device [Qualcomm BT_002] on usb-0000:00:14.0-1.1/input0 [12963.066910] hid-generic 0003:0A12:4007.0004: hiddev0,hidraw1: USB HID v1.11 Device [Qualcomm BT_002] on usb-0000:00:14.0-1.1/input1
Same error (arecord: pcm_read:2032: read error: Input/output error) observed on 4.4, 4.15 and 5.4 kernel version.
What exact versions of these are you using?
4.4.0-66-generic 4.15.0-54-generic
These are all Ubuntu-provided kernels, we have no idea what is really in them, sorry. I would ask for support from that distro please. good luck! greg k-h
On Tue, 08 Jun 2021 16:20:07 +0530, Muni Sekhar said:
$ arecord --device hw:1,0 --channels 1 --format S16_LE --rate 32000_Hz x.wav Recording WAVE 'x.wav' : Signed 16 bit Little Endian, Rate 32000 Hz, Mono arecord: pcm_read:2032: read error: Input/output error
Always check the obvious stuff first does the card support S16_LE 32Khz data? And if it's configurable for multiple formats, was it set for the correct one? Does wireshark or other USB snoop program show any traffic at all? Does the record die immediately, or hang for a few seconds and timeout? Does 'arecord -v' or arecord -vv' tell us anything more about the situation?
On Sat, Jun 12, 2021 at 5:16 AM Valdis Klētnieks <valdis.kletnieks@vt.edu> wrote:
On Tue, 08 Jun 2021 16:20:07 +0530, Muni Sekhar said:
$ arecord --device hw:1,0 --channels 1 --format S16_LE --rate 32000_Hz x.wav Recording WAVE 'x.wav' : Signed 16 bit Little Endian, Rate 32000 Hz, Mono arecord: pcm_read:2032: read error: Input/output error
Always check the obvious stuff first does the card support S16_LE 32Khz data?
Yes , it supports.
And if it's configurable for multiple formats, was it set for the correct one? Is there a way to verify was it set for the correct one or not?
Does wireshark or other USB snoop program show any traffic at all? Does the record die immediately, or hang for a few seconds and timeout? What is the difference between these two ways? For my hardware, I noticed that it hangs for a few seconds and gives EIO (arecord: pcm_read:2032: read error: Input/output error). Does 'arecord -v' or arecord -vv' tell us anything more about the situation?
-- Thanks, Sekhar
On Sat, 12 Jun 2021 16:45:00 +0530, Muni Sekhar said:
And if it's configurable for multiple formats, was it set for the correct one? Is there a way to verify was it set for the correct one or not?
arecord -v gives what it thinks the setup is.
Does the record die immediately, or hang for a few seconds and timeout? What is the difference between these two ways?
An immediate failure is usually related to a "Can't do it" situation where the USB interaction to configure the device has failed, while a timeout usually indicates that the configuration at least *claimed* to succeed, but is failing to properly transfer valid data.
For my hardware, I noticed that it hangs for a few seconds and gives EIO (arecord: pcm_read:2032: read error: Input/output error).
Given that the usbmon output ran to several megabytes, that's tending to point at "the card was returning lots of packets, but they weren't actually the format/data that arecord was expecting.
On Tue, Jun 15, 2021 at 11:44 AM Valdis Klētnieks <valdis.kletnieks@vt.edu> wrote:
On Sat, 12 Jun 2021 16:45:00 +0530, Muni Sekhar said:
And if it's configurable for multiple formats, was it set for the correct one? Is there a way to verify was it set for the correct one or not?
arecord -v gives what it thinks the setup is.
Does the record die immediately, or hang for a few seconds and timeout? What is the difference between these two ways?
An immediate failure is usually related to a "Can't do it" situation where the USB interaction to configure the device has failed, while a timeout usually indicates that the configuration at least *claimed* to succeed, but is failing to properly transfer valid data.
For my hardware, I noticed that it hangs for a few seconds and gives EIO (arecord: pcm_read:2032: read error: Input/output error).
Given that the usbmon output ran to several megabytes, that's tending to point at "the card was returning lots of packets, but they weren't actually the format/data that arecord was expecting.
So, is it a USB card issue? -- Thanks, Sekhar
participants (3)
-
Greg KH -
Muni Sekhar -
Valdis Klētnieks