Score:0

There is some problem in my webcam

se flag

I am in ubuntu 21.04 and i am new to linux everything is working fine except my camera (Its connected to pc using usb cable) whenever i try to open cheese the video freezes and when i try to use guvcview the following error occurs in the terminal:

GUVCVIEW: couldn't open /home/aub/.config/guvcview2/video0 for read: No such file or directory
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory
V4L2_CORE: Control 0x80000000 failed to query with error -1
buggy V4L2_CTRL_FLAG_NEXT_CTRL flag implementation (workaround enabled)
V4L2_CORE: (get control values) empty control list
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable ```

   
While i am trying to capture uding fswebcam the following error occurs :
```fswebcam 1234.jpg
--- Opening /dev/video0...
Trying source module v4l2...
/dev/video0 opened.
No input was specified, using the first.
Adjusting resolution from 384x288 to 640x320.
--- Capturing frame...
Timed out waiting for frame!
No frames captured.```




More information of the usb camera found using lsusb -v:
Bus 001 Device 005: ID 1224:2a25 Jieli Technology USB PHY 2.0
Couldn't open device, some information will be missing
Device Descriptor:
 bLength                18
 bDescriptorType         1
 bcdUSB               2.00
 bDeviceClass          239 Miscellaneous Device
 bDeviceSubClass         2 
 bDeviceProtocol         1 Interface Association
 bMaxPacketSize0        64
 idVendor           0x1224 
 idProduct          0x2a25 
 bcdDevice            1.00
 iManufacturer           1 Jieli Technology
 iProduct                2 USB PHY 2.0
 iSerial                 0 
 bNumConfigurations      1
 Configuration Descriptor:
   bLength                 9
   bDescriptorType         2
   wTotalLength       0x02dd
   bNumInterfaces          4
   bConfigurationValue     1
   iConfiguration          0 
   bmAttributes         0x80
     (Bus Powered)
   MaxPower              500mA
   Interface Association:
     bLength                 8
     bDescriptorType        11
     bFirstInterface         0
     bInterfaceCount         2
     bFunctionClass         14 Video
     bFunctionSubClass       3 Video Interface Collection
     bFunctionProtocol       0 
     iFunction               6 
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        0
     bAlternateSetting       0
     bNumEndpoints           1
     bInterfaceClass        14 Video
     bInterfaceSubClass      1 Video Control
     bInterfaceProtocol      0 
     iInterface              6 
     VideoControl Interface Descriptor:
       bLength                13
       bDescriptorType        36
       bDescriptorSubtype      1 (HEADER)
       bcdUVC               1.00
       wTotalLength       0x0067
       dwClockFrequency       30.000000MHz
       bInCollection           1
       baInterfaceNr( 0)       1
     VideoControl Interface Descriptor:
       bLength                18
       bDescriptorType        36
       bDescriptorSubtype      2 (INPUT_TERMINAL)
       bTerminalID             1
       wTerminalType      0x0201 Camera Sensor
       bAssocTerminal          0
       iTerminal               0 
       wObjectiveFocalLengthMin      0
       wObjectiveFocalLengthMax      0
       wOcularFocalLength            0
       bControlSize                  3
       bmControls           0x00000000
     VideoControl Interface Descriptor:
       bLength                11
       bDescriptorType        36
       bDescriptorSubtype      5 (PROCESSING_UNIT)
     Warning: Descriptor too short
       bUnitID                 2
       bSourceID               1
       wMaxMultiplier          0
       bControlSize            2
       bmControls     0x00000000
       iProcessing             0 
       bmVideoStandards     0x1a
         NTSC - 525/60
         SECAM - 625/50
         NTSC - 625/50
     VideoControl Interface Descriptor:
       bLength                26
       bDescriptorType        36
       bDescriptorSubtype      6 (EXTENSION_UNIT)
       bUnitID                 3
       guidExtensionCode         {28f03370-6311-4a2e-ba2c-6890eb334016}
       bNumControls            8
       bNrInPins               1
       baSourceID( 0)          2
       bControlSize            1
       bmControls( 0)       0x00
       iExtension              0 
     VideoControl Interface Descriptor:
       bLength                26
       bDescriptorType        36
       bDescriptorSubtype      6 (EXTENSION_UNIT)
       bUnitID                 4
       guidExtensionCode         {dddf7394-973e-4727-bed9-04ed6426dc67}
       bNumControls            8
       bNrInPins               1
       baSourceID( 0)          3
       bControlSize            1
       bmControls( 0)       0x00
       iExtension              0 
     VideoControl Interface Descriptor:
       bLength                 9
       bDescriptorType        36
       bDescriptorSubtype      3 (OUTPUT_TERMINAL)
       bTerminalID             5
       wTerminalType      0x0101 USB Streaming
       bAssocTerminal          0
       bSourceID               4
       iTerminal               0 
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x85  EP 5 IN
       bmAttributes            3
         Transfer Type            Interrupt
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0040  1x 64 bytes
       bInterval               4
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       0
     bNumEndpoints           0
     bInterfaceClass        14 Video
     bInterfaceSubClass      2 Video Streaming
     bInterfaceProtocol      0 
     iInterface              0 
     VideoStreaming Interface Descriptor:
       bLength                            15
       bDescriptorType                    36
       bDescriptorSubtype                  1 (INPUT_HEADER)
       bNumFormats                         2
       wTotalLength                   0x013f
       bEndPointAddress                  132
       bmInfo                              0
       bTerminalLink                       5
       bStillCaptureMethod                 2
       bTriggerSupport                     1
       bTriggerUsage                       0
       bControlSize                        1
       bmaControls( 0)                     0
       bmaControls( 1)                     0
     VideoStreaming Interface Descriptor:
       bLength                            11
       bDescriptorType                    36
       bDescriptorSubtype                  6 (FORMAT_MJPEG)
       bFormatIndex                        1
       bNumFrameDescriptors                4
       bFlags                              0
         Fixed-size samples: No
       bDefaultFrameIndex                  1
       bAspectRatioX                       0
       bAspectRatioY                       0
       bmInterlaceFlags                 0x00
         Interlaced stream or variable: No
         Fields per frame: 1 fields
         Field 1 first: No
         Field pattern: Field 1 only
       bCopyProtect                        0
     VideoStreaming Interface Descriptor:
       bLength                            34
       bDescriptorType                    36
       bDescriptorSubtype                  7 (FRAME_MJPEG)
       bFrameIndex                         1
       bmCapabilities                   0x00
         Still image unsupported
       wWidth                           1280
       wHeight                           720
       dwMinBitRate                221184000
       dwMaxBitRate                442368000
       dwMaxVideoFrameBufferSize     1843200
       dwDefaultFrameInterval         333333
       bFrameIntervalType                  2
       dwFrameInterval( 0)            333333
       dwFrameInterval( 1)            400000
     VideoStreaming Interface Descriptor:
       bLength                            34
       bDescriptorType                    36
       bDescriptorSubtype                  7 (FRAME_MJPEG)
       bFrameIndex                         2
       bmCapabilities                   0x00
         Still image unsupported
       wWidth                           1920
       wHeight                          1080
       dwMinBitRate                497664000
       dwMaxBitRate                995328000
       dwMaxVideoFrameBufferSize     4147200
       dwDefaultFrameInterval         333333
       bFrameIntervalType                  2
       dwFrameInterval( 0)            333333
       dwFrameInterval( 1)            400000
     VideoStreaming Interface Descriptor:
       bLength                            34
       bDescriptorType                    36
       bDescriptorSubtype                  7 (FRAME_MJPEG)
       bFrameIndex                         3
       bmCapabilities                   0x00
         Still image unsupported
       wWidth                            640
       wHeight                           480
       dwMinBitRate                 73728000
       dwMaxBitRate                147456000
       dwMaxVideoFrameBufferSize      614400
       dwDefaultFrameInterval         333333
       bFrameIntervalType                  2
       dwFrameInterval( 0)            333333
       dwFrameInterval( 1)            400000
     VideoStreaming Interface Descriptor:
       bLength                            34
       bDescriptorType                    36
       bDescriptorSubtype                  7 (FRAME_MJPEG)
       bFrameIndex                         4
       bmCapabilities                   0x00
         Still image unsupported
       wWidth                            640
       wHeight                           320
       dwMinBitRate                 49152000
       dwMaxBitRate                 98304000
       dwMaxVideoFrameBufferSize      409600
       dwDefaultFrameInterval         333333
       bFrameIntervalType                  2
       dwFrameInterval( 0)            333333
       dwFrameInterval( 1)            400000
     VideoStreaming Interface Descriptor:
       bLength                            22
       bDescriptorType                    36
       bDescriptorSubtype                  3 (STILL_IMAGE_FRAME)
       bEndpointAddress                    0
       bNumImageSizePatterns               3
       wWidth( 0)                       1280
       wHeight( 0)                       720
       wWidth( 1)                        640
       wHeight( 1)                       480
       wWidth( 2)                        320
       wHeight( 2)                       240
       bNumCompressionPatterns             4
       bCompression( 0)                    1
       bCompression( 1)                    5
       bCompression( 2)                   10
       bCompression( 3)                   20
     VideoStreaming Interface Descriptor:
       bLength                             6
       bDescriptorType                    36
       bDescriptorSubtype                 13 (COLORFORMAT)
       bColorPrimaries                     1 (BT.709,sRGB)
       bTransferCharacteristics            1 (BT.709)
       bMatrixCoefficients                 4 (SMPTE 170M (BT.601))
     VideoStreaming Interface Descriptor:
       bLength                            27
       bDescriptorType                    36
       bDescriptorSubtype                  4 (FORMAT_UNCOMPRESSED)
       bFormatIndex                        2
       bNumFrameDescriptors                3
       guidFormat                            {32595559-0000-0010-8000-00aa00389b71}
       bBitsPerPixel                      16
       bDefaultFrameIndex                  1
       bAspectRatioX                       0
       bAspectRatioY                       0
       bmInterlaceFlags                 0x00
         Interlaced stream or variable: No
         Fields per frame: 2 fields
         Field 1 first: No
         Field pattern: Field 1 only
       bCopyProtect                        0
     VideoStreaming Interface Descriptor:
       bLength                            30
       bDescriptorType                    36
       bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
       bFrameIndex                         1
       bmCapabilities                   0x00
         Still image unsupported
       wWidth                           1280
       wHeight                           720
       dwMinBitRate                221184000
       dwMaxBitRate                442368000
       dwMaxVideoFrameBufferSize     1843200
       dwDefaultFrameInterval        2000000
       bFrameIntervalType                  1
       dwFrameInterval( 0)           2000000
     VideoStreaming Interface Descriptor:
       bLength                            30
       bDescriptorType                    36
       bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
       bFrameIndex                         2
       bmCapabilities                   0x00
         Still image unsupported
       wWidth                            640
       wHeight                           480
       dwMinBitRate                 73728000
       dwMaxBitRate                147456000
       dwMaxVideoFrameBufferSize      614400
       dwDefaultFrameInterval         400000
       bFrameIntervalType                  1
       dwFrameInterval( 0)            400000
     VideoStreaming Interface Descriptor:
       bLength                            30
       bDescriptorType                    36
       bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
       bFrameIndex                         3
       bmCapabilities                   0x00
         Still image unsupported
       wWidth                            320
       wHeight                           240
       dwMinBitRate                 18432000
       dwMaxBitRate                 36864000
       dwMaxVideoFrameBufferSize      153600
       dwDefaultFrameInterval         400000
       bFrameIntervalType                  1
       dwFrameInterval( 0)            400000
     VideoStreaming Interface Descriptor:
       bLength                            18
       bDescriptorType                    36
       bDescriptorSubtype                  3 (STILL_IMAGE_FRAME)
       bEndpointAddress                    0
       bNumImageSizePatterns               3
       wWidth( 0)                       1280
       wHeight( 0)                       720
       wWidth( 1)                        640
       wHeight( 1)                       480
       wWidth( 2)                        320
       wHeight( 2)                       240
       bNumCompressionPatterns             0
     VideoStreaming Interface Descriptor:
       bLength                             6
       bDescriptorType                    36
       bDescriptorSubtype                 13 (COLORFORMAT)
       bColorPrimaries                     1 (BT.709,sRGB)
       bTransferCharacteristics            1 (BT.709)
       bMatrixCoefficients                 4 (SMPTE 170M (BT.601))
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       1
     bNumEndpoints           1
     bInterfaceClass        14 Video
     bInterfaceSubClass      2 Video Streaming
     bInterfaceProtocol      0 
     iInterface              0 
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x84  EP 4 IN
       bmAttributes            5
         Transfer Type            Isochronous
         Synch Type               Asynchronous
         Usage Type               Data
       wMaxPacketSize     0x1400  3x 1024 bytes
       bInterval               1
   Interface Association:
     bLength                 8
     bDescriptorType        11
     bFirstInterface         2
     bInterfaceCount         2
     bFunctionClass          1 Audio
     bFunctionSubClass       2 Streaming
     bFunctionProtocol       0 
     iFunction               5 
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        2
     bAlternateSetting       0
     bNumEndpoints           0
     bInterfaceClass         1 Audio
     bInterfaceSubClass      1 Control Device
     bInterfaceProtocol      0 
     iInterface              5 
     AudioControl Interface Descriptor:
       bLength                 9
       bDescriptorType        36
       bDescriptorSubtype      1 (HEADER)
       bcdADC               1.00
       wTotalLength       0x0026
       bInCollection           1
       baInterfaceNr(0)        3
     AudioControl Interface Descriptor:
       bLength                12
       bDescriptorType        36
       bDescriptorSubtype      2 (INPUT_TERMINAL)
       bTerminalID             1
       wTerminalType      0x0201 Microphone
       bAssocTerminal          0
       bNrChannels             1
       wChannelConfig     0x0003
         Left Front (L)
         Right Front (R)
       iChannelNames           0 
       iTerminal               0 
     AudioControl Interface Descriptor:
       bLength                 8
       bDescriptorType        36
       bDescriptorSubtype      6 (FEATURE_UNIT)
       bUnitID                 3
       bSourceID               1
       bControlSize            1
       bmaControls(0)       0x03
         Mute Control
         Volume Control
       iFeature                0 
     AudioControl Interface Descriptor:
       bLength                 9
       bDescriptorType        36
       bDescriptorSubtype      3 (OUTPUT_TERMINAL)
       bTerminalID             2
       wTerminalType      0x0101 USB Streaming
       bAssocTerminal          0
       bSourceID               3
       iTerminal               0 
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        3
     bAlternateSetting       0
     bNumEndpoints           0
     bInterfaceClass         1 Audio
     bInterfaceSubClass      2 Streaming
     bInterfaceProtocol      0 
     iInterface              5 
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        3
     bAlternateSetting       1
     bNumEndpoints           1
     bInterfaceClass         1 Audio
     bInterfaceSubClass      2 Streaming
     bInterfaceProtocol      0 
     iInterface              5 
     AudioStreaming Interface Descriptor:
       bLength                 7
       bDescriptorType        36
       bDescriptorSubtype      1 (AS_GENERAL)
       bTerminalLink           2
       bDelay                  1 frames
       wFormatTag         0x0001 PCM
     AudioStreaming Interface Descriptor:
       bLength                11
       bDescriptorType        36
       bDescriptorSubtype      2 (FORMAT_TYPE)
       bFormatType             1 (FORMAT_TYPE_I)
       bNrChannels             1
       bSubframeSize           2
       bBitResolution         16
       bSamFreqType            1 Discrete
       tSamFreq[ 0]         8000
     Endpoint Descriptor:
       bLength                 9
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            1
         Transfer Type            Isochronous
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0100  1x 256 bytes
       bInterval               4
       bRefresh                0
       bSynchAddress           0
       AudioStreaming Endpoint Descriptor:
         bLength                 7
         bDescriptorType        37
         bDescriptorSubtype      1 (EP_GENERAL)
         bmAttributes         0x01
           Sampling Frequency
         bLockDelayUnits         0 Undefined
         wLockDelay         0x0000
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        3
     bAlternateSetting       2
     bNumEndpoints           1
     bInterfaceClass         1 Audio
     bInterfaceSubClass      2 Streaming
     bInterfaceProtocol      0 
     iInterface              5 
     AudioStreaming Interface Descriptor:
       bLength                 7
       bDescriptorType        36
       bDescriptorSubtype      1 (AS_GENERAL)
       bTerminalLink           2
       bDelay                  1 frames
       wFormatTag         0x0001 PCM
     AudioStreaming Interface Descriptor:
       bLength                11
       bDescriptorType        36
       bDescriptorSubtype      2 (FORMAT_TYPE)
       bFormatType             1 (FORMAT_TYPE_I)
       bNrChannels             1
       bSubframeSize           2
       bBitResolution         16
       bSamFreqType            1 Discrete
       tSamFreq[ 0]        16000
     Endpoint Descriptor:
       bLength                 9
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            1
         Transfer Type            Isochronous
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0100  1x 256 bytes
       bInterval               4
       bRefresh                0
       bSynchAddress           0
       AudioStreaming Endpoint Descriptor:
         bLength                 7
         bDescriptorType        37
         bDescriptorSubtype      1 (EP_GENERAL)
         bmAttributes         0x01
           Sampling Frequency
         bLockDelayUnits         0 Undefined
         wLockDelay         0x0000
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        3
     bAlternateSetting       3
     bNumEndpoints           1
     bInterfaceClass         1 Audio
     bInterfaceSubClass      2 Streaming
     bInterfaceProtocol      0 
     iInterface              5 
     AudioStreaming Interface Descriptor:
       bLength                 7
       bDescriptorType        36
       bDescriptorSubtype      1 (AS_GENERAL)
       bTerminalLink           2
       bDelay                  1 frames
       wFormatTag         0x0001 PCM
     AudioStreaming Interface Descriptor:
       bLength                11
       bDescriptorType        36
       bDescriptorSubtype      2 (FORMAT_TYPE)
       bFormatType             1 (FORMAT_TYPE_I)
       bNrChannels             1
       bSubframeSize           2
       bBitResolution         16
       bSamFreqType            1 Discrete
       tSamFreq[ 0]        44100
     Endpoint Descriptor:
       bLength                 9
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            1
         Transfer Type            Isochronous
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0100  1x 256 bytes
       bInterval               4
       bRefresh                0
       bSynchAddress           0
       AudioStreaming Endpoint Descriptor:
         bLength                 7
         bDescriptorType        37
         bDescriptorSubtype      1 (EP_GENERAL)
         bmAttributes         0x01
           Sampling Frequency
         bLockDelayUnits         0 Undefined
         wLockDelay         0x0000
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        3
     bAlternateSetting       4
     bNumEndpoints           1
     bInterfaceClass         1 Audio
     bInterfaceSubClass      2 Streaming
     bInterfaceProtocol      0 
     iInterface              5 
     AudioStreaming Interface Descriptor:
       bLength                 7
       bDescriptorType        36
       bDescriptorSubtype      1 (AS_GENERAL)
       bTerminalLink           2
       bDelay                  1 frames
       wFormatTag         0x0001 PCM
     AudioStreaming Interface Descriptor:
       bLength                11
       bDescriptorType        36
       bDescriptorSubtype      2 (FORMAT_TYPE)
       bFormatType             1 (FORMAT_TYPE_I)
       bNrChannels             1
       bSubframeSize           2
       bBitResolution         16
       bSamFreqType            1 Discrete
       tSamFreq[ 0]        48000
     Endpoint Descriptor:
       bLength                 9
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            1
         Transfer Type            Isochronous
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0100  1x 256 bytes
       bInterval               4
       bRefresh                0
       bSynchAddress           0
       AudioStreaming Endpoint Descriptor:
         bLength                 7
         bDescriptorType        37
         bDescriptorSubtype      1 (EP_GENERAL)
         bmAttributes         0x01
           Sampling Frequency
         bLockDelayUnits         0 Undefined
         wLockDelay         0x0000
mangohost

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.