On Tue, Jun 8, 2021 at 4:44 PM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> 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
