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The system did not detect the usb device inserted

Time:09-17

Companies to develop products, at present in the U disk test side has a
Some U disk, can identify some U disk can't identify, very strange,

Which direction is not clear, specific to check

Specific print is as follows:
<6 & gt; 2-1: usb disconnect usb device number 2
<6 & gt; Usb 1-1: the new high - speed usb device number 3 using ehci - platform
<6 & gt; Usb storage - 1-1 to 1. 0: usb Mass storage device detected
<6 & gt; SCSI host0: usb storage - 1-1 to 1. 0
<5> SCSI 0:0:0:0: Direct - Access JetFlash Transcend 16 gb 1100 PQ: 0 ANSI: 6
<5> Sd 0:0:0:0:30818304, 512 - byte logical blocks: (15.7 GB/14.6 GiB)
<5> Sd 0:0:0:0: the Write Protect is off
<7 & gt; Sd 0:0:0:0:43 00 00 00 Mode Sense:
<5> Sd 0:0:0:0: Write cache: enabled, a read cache: enabled, doesn 't support DPO or FUA
<6 & gt; Sda: sda4
<5> Sd 0:0:0:0: Attached SCSI removable disk
<4> FAT - fs (sda4) : Volume was not properly unmounted. Some data may be corrupt. Do run FSCK.
<11 & gt; Init: untracked pid 3272 exited with status 0
<6 & gt; 1-1: usb disconnect usb device number 3
<5> Sd 0:0:0:0: Synchronizing SCSI cache
<6 & gt; Sd 0:0:0:0:
<4> Result: hostbyte=0 x01 driverbyte=0 x00
<6 & gt; Usb 1-1: the new high - speed usb device number 4 using ehci - platform
<6 & gt; Usb storage - 1-1 to 1. 0: usb Mass storage device detected
<6 & gt; SCSI host1: usb storage - 1-1 to 1. 0
<6 & gt; 1-1: usb disconnect usb device number 4
<6 & gt; Usb 1-1: the new high - speed usb device number 5 using ehci - platform
<6 & gt; Usb storage - 1-1 to 1. 0: usb Mass storage device detected
<6 & gt; SCSI host2: usb storage - 1-1 to 1. 0
<6 & gt; 1-1: usb disconnect usb device number 5
<6 & gt; Usb 1-1: the new high - speed usb device number 6 using ehci - platform
<6 & gt; Usb storage - 1-1 to 1. 0: usb Mass storage device detected
<6 & gt; SCSI host3: usb storage - 1-1 to 1. 0
<6 & gt; 1-1: usb usb disconnect, device number 6

CodePudding user response:

Caught, see which package mistake
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