KVM passthrough in virtual machine more than 3 usb devices

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I have a question, how can i passthrough in virtual machine more than 3 usb devices?



I have a usb hub and i cannot passthrough in virtual machine more than 3 usb device. My usb device connect to usb hub, but if i connect them to mother board i have the same error error:



ERROR: No free USB ports



But i have moree than 4 usb free port's.



My system:



1)
4.13.0-43-generic
Ubuntu 17.10
qemu-kvm Version: 1:2.10+dfsg-0ubuntu3.8
libvirt version 3.6.0



2)
Virtual machin Windows 7x64
Config Virtual machine:



<domain type='kvm'>
<name>A1</name>
<uuid>6ba27623-0f5c-41c9-bca9-6a51c5cdf4c2</uuid>
<memory unit='KiB'>2097152</memory>
<currentMemory unit='KiB'>2097152</currentMemory>
<vcpu placement='static'>2</vcpu>
<os>
<type arch='x86_64' machine='pc-i440fx-artful'>hvm</type>
<boot dev='cdrom'/>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<hyperv>
<relaxed state='on'/>
<vapic state='on'/>
<spinlocks state='on' retries='8191'/>
</hyperv>
</features>
<cpu mode='custom' match='exact' check='partial'>
<model fallback='allow'>Haswell-noTSX-IBRS</model>
</cpu>
<clock offset='localtime'>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>
<timer name='hpet' present='no'/>
<timer name='hypervclock' present='yes'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<pm>
<suspend-to-mem enabled='no'/>
<suspend-to-disk enabled='no'/>
</pm>
<devices>
<emulator>/usr/bin/kvm-spice</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='none'/>
<source file='/kvm/vhdd/A1.qcow2'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</disk>
<controller type='pci' index='0' model='pci-root'/>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<controller type='usb' index='0' model='nec-xhci'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</controller>
<interface type='bridge'>
<mac address='52:54:00:86:70:01'/>
<source bridge='br0'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<serial type='pty'>
<target port='0'/>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
<input type='tablet' bus='usb'>
<address type='usb' bus='0' port='1'/>
</input>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>
<listen type='address' address='0.0.0.0'/>
</graphics>
<video>
<model type='vga' vram='16384' heads='1' primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</memballoon>
</devices>
</domain>


3)
My usb device have numbers: 6, 5, 4, 7.
Device number 8 is card reader.
lsusb -



Bus 002 Device 002: ID 8087:8000 Intel Corp. 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 003: ID 046d:c328 Logitech, Inc.
Bus 003 Device 008: ID 05e3:0723 Genesys Logic, Inc. GL827L SD/MMC/MS Flash Card Reader
Bus 003 Device 009: ID 067b:2528 Prolific Technology, Inc. Storage device (8gB thumb drive)
Bus 003 Device 006: ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash Drive
Bus 003 Device 005: ID 0951:1666 Kingston Technology DataTraveler G4
Bus 003 Device 004: ID 0951:1666 Kingston Technology DataTraveler G4
Bus 003 Device 002: ID 1a40:0201 Terminus Technology Inc. FE 2.1 7-port Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


4)
lsusb -t



/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
|__ Port 5: Dev 2, If 0, Class=Hub, Driver=hub/7p, 480M
|__ Port 4: Dev 9, If 0, Class=Mass Storage, Driver=usb-storage, 480M
|__ Port 2: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 480M
|__ Port 5: Dev 8, If 0, Class=Mass Storage, Driver=usbfs, 480M
|__ Port 3: Dev 6, If 0, Class=Mass Storage, Driver=usbfs, 480M
|__ Port 1: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 480M
|__ Port 6: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 6: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M


So, how can i fix this problem?










share|improve this question

























    up vote
    2
    down vote

    favorite












    I have a question, how can i passthrough in virtual machine more than 3 usb devices?



    I have a usb hub and i cannot passthrough in virtual machine more than 3 usb device. My usb device connect to usb hub, but if i connect them to mother board i have the same error error:



    ERROR: No free USB ports



    But i have moree than 4 usb free port's.



    My system:



    1)
    4.13.0-43-generic
    Ubuntu 17.10
    qemu-kvm Version: 1:2.10+dfsg-0ubuntu3.8
    libvirt version 3.6.0



    2)
    Virtual machin Windows 7x64
    Config Virtual machine:



    <domain type='kvm'>
    <name>A1</name>
    <uuid>6ba27623-0f5c-41c9-bca9-6a51c5cdf4c2</uuid>
    <memory unit='KiB'>2097152</memory>
    <currentMemory unit='KiB'>2097152</currentMemory>
    <vcpu placement='static'>2</vcpu>
    <os>
    <type arch='x86_64' machine='pc-i440fx-artful'>hvm</type>
    <boot dev='cdrom'/>
    <boot dev='hd'/>
    </os>
    <features>
    <acpi/>
    <apic/>
    <hyperv>
    <relaxed state='on'/>
    <vapic state='on'/>
    <spinlocks state='on' retries='8191'/>
    </hyperv>
    </features>
    <cpu mode='custom' match='exact' check='partial'>
    <model fallback='allow'>Haswell-noTSX-IBRS</model>
    </cpu>
    <clock offset='localtime'>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='hpet' present='no'/>
    <timer name='hypervclock' present='yes'/>
    </clock>
    <on_poweroff>destroy</on_poweroff>
    <on_reboot>restart</on_reboot>
    <on_crash>restart</on_crash>
    <pm>
    <suspend-to-mem enabled='no'/>
    <suspend-to-disk enabled='no'/>
    </pm>
    <devices>
    <emulator>/usr/bin/kvm-spice</emulator>
    <disk type='file' device='disk'>
    <driver name='qemu' type='qcow2' cache='none'/>
    <source file='/kvm/vhdd/A1.qcow2'/>
    <target dev='vda' bus='virtio'/>
    <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </disk>
    <controller type='pci' index='0' model='pci-root'/>
    <controller type='ide' index='0'>
    <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <controller type='usb' index='0' model='nec-xhci'>
    <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </controller>
    <interface type='bridge'>
    <mac address='52:54:00:86:70:01'/>
    <source bridge='br0'/>
    <model type='virtio'/>
    <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
    <serial type='pty'>
    <target port='0'/>
    </serial>
    <console type='pty'>
    <target type='serial' port='0'/>
    </console>
    <input type='tablet' bus='usb'>
    <address type='usb' bus='0' port='1'/>
    </input>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>
    <listen type='address' address='0.0.0.0'/>
    </graphics>
    <video>
    <model type='vga' vram='16384' heads='1' primary='yes'/>
    <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <memballoon model='virtio'>
    <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </memballoon>
    </devices>
    </domain>


    3)
    My usb device have numbers: 6, 5, 4, 7.
    Device number 8 is card reader.
    lsusb -



    Bus 002 Device 002: ID 8087:8000 Intel Corp. 
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 001 Device 002: ID 8087:8008 Intel Corp.
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 003 Device 003: ID 046d:c328 Logitech, Inc.
    Bus 003 Device 008: ID 05e3:0723 Genesys Logic, Inc. GL827L SD/MMC/MS Flash Card Reader
    Bus 003 Device 009: ID 067b:2528 Prolific Technology, Inc. Storage device (8gB thumb drive)
    Bus 003 Device 006: ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash Drive
    Bus 003 Device 005: ID 0951:1666 Kingston Technology DataTraveler G4
    Bus 003 Device 004: ID 0951:1666 Kingston Technology DataTraveler G4
    Bus 003 Device 002: ID 1a40:0201 Terminus Technology Inc. FE 2.1 7-port Hub
    Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


    4)
    lsusb -t



    /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
    /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
    |__ Port 5: Dev 2, If 0, Class=Hub, Driver=hub/7p, 480M
    |__ Port 4: Dev 9, If 0, Class=Mass Storage, Driver=usb-storage, 480M
    |__ Port 2: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 480M
    |__ Port 5: Dev 8, If 0, Class=Mass Storage, Driver=usbfs, 480M
    |__ Port 3: Dev 6, If 0, Class=Mass Storage, Driver=usbfs, 480M
    |__ Port 1: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 480M
    |__ Port 6: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
    |__ Port 6: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
    /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
    /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M


    So, how can i fix this problem?










    share|improve this question























      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      I have a question, how can i passthrough in virtual machine more than 3 usb devices?



      I have a usb hub and i cannot passthrough in virtual machine more than 3 usb device. My usb device connect to usb hub, but if i connect them to mother board i have the same error error:



      ERROR: No free USB ports



      But i have moree than 4 usb free port's.



      My system:



      1)
      4.13.0-43-generic
      Ubuntu 17.10
      qemu-kvm Version: 1:2.10+dfsg-0ubuntu3.8
      libvirt version 3.6.0



      2)
      Virtual machin Windows 7x64
      Config Virtual machine:



      <domain type='kvm'>
      <name>A1</name>
      <uuid>6ba27623-0f5c-41c9-bca9-6a51c5cdf4c2</uuid>
      <memory unit='KiB'>2097152</memory>
      <currentMemory unit='KiB'>2097152</currentMemory>
      <vcpu placement='static'>2</vcpu>
      <os>
      <type arch='x86_64' machine='pc-i440fx-artful'>hvm</type>
      <boot dev='cdrom'/>
      <boot dev='hd'/>
      </os>
      <features>
      <acpi/>
      <apic/>
      <hyperv>
      <relaxed state='on'/>
      <vapic state='on'/>
      <spinlocks state='on' retries='8191'/>
      </hyperv>
      </features>
      <cpu mode='custom' match='exact' check='partial'>
      <model fallback='allow'>Haswell-noTSX-IBRS</model>
      </cpu>
      <clock offset='localtime'>
      <timer name='rtc' tickpolicy='catchup'/>
      <timer name='pit' tickpolicy='delay'/>
      <timer name='hpet' present='no'/>
      <timer name='hypervclock' present='yes'/>
      </clock>
      <on_poweroff>destroy</on_poweroff>
      <on_reboot>restart</on_reboot>
      <on_crash>restart</on_crash>
      <pm>
      <suspend-to-mem enabled='no'/>
      <suspend-to-disk enabled='no'/>
      </pm>
      <devices>
      <emulator>/usr/bin/kvm-spice</emulator>
      <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none'/>
      <source file='/kvm/vhdd/A1.qcow2'/>
      <target dev='vda' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
      </disk>
      <controller type='pci' index='0' model='pci-root'/>
      <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
      </controller>
      <controller type='usb' index='0' model='nec-xhci'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
      </controller>
      <interface type='bridge'>
      <mac address='52:54:00:86:70:01'/>
      <source bridge='br0'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
      </interface>
      <serial type='pty'>
      <target port='0'/>
      </serial>
      <console type='pty'>
      <target type='serial' port='0'/>
      </console>
      <input type='tablet' bus='usb'>
      <address type='usb' bus='0' port='1'/>
      </input>
      <input type='mouse' bus='ps2'/>
      <input type='keyboard' bus='ps2'/>
      <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>
      <listen type='address' address='0.0.0.0'/>
      </graphics>
      <video>
      <model type='vga' vram='16384' heads='1' primary='yes'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
      </video>
      <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
      </memballoon>
      </devices>
      </domain>


      3)
      My usb device have numbers: 6, 5, 4, 7.
      Device number 8 is card reader.
      lsusb -



      Bus 002 Device 002: ID 8087:8000 Intel Corp. 
      Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
      Bus 001 Device 002: ID 8087:8008 Intel Corp.
      Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
      Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
      Bus 003 Device 003: ID 046d:c328 Logitech, Inc.
      Bus 003 Device 008: ID 05e3:0723 Genesys Logic, Inc. GL827L SD/MMC/MS Flash Card Reader
      Bus 003 Device 009: ID 067b:2528 Prolific Technology, Inc. Storage device (8gB thumb drive)
      Bus 003 Device 006: ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash Drive
      Bus 003 Device 005: ID 0951:1666 Kingston Technology DataTraveler G4
      Bus 003 Device 004: ID 0951:1666 Kingston Technology DataTraveler G4
      Bus 003 Device 002: ID 1a40:0201 Terminus Technology Inc. FE 2.1 7-port Hub
      Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


      4)
      lsusb -t



      /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
      /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
      |__ Port 5: Dev 2, If 0, Class=Hub, Driver=hub/7p, 480M
      |__ Port 4: Dev 9, If 0, Class=Mass Storage, Driver=usb-storage, 480M
      |__ Port 2: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 480M
      |__ Port 5: Dev 8, If 0, Class=Mass Storage, Driver=usbfs, 480M
      |__ Port 3: Dev 6, If 0, Class=Mass Storage, Driver=usbfs, 480M
      |__ Port 1: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 480M
      |__ Port 6: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
      |__ Port 6: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
      /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
      |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
      /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
      |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M


      So, how can i fix this problem?










      share|improve this question













      I have a question, how can i passthrough in virtual machine more than 3 usb devices?



      I have a usb hub and i cannot passthrough in virtual machine more than 3 usb device. My usb device connect to usb hub, but if i connect them to mother board i have the same error error:



      ERROR: No free USB ports



      But i have moree than 4 usb free port's.



      My system:



      1)
      4.13.0-43-generic
      Ubuntu 17.10
      qemu-kvm Version: 1:2.10+dfsg-0ubuntu3.8
      libvirt version 3.6.0



      2)
      Virtual machin Windows 7x64
      Config Virtual machine:



      <domain type='kvm'>
      <name>A1</name>
      <uuid>6ba27623-0f5c-41c9-bca9-6a51c5cdf4c2</uuid>
      <memory unit='KiB'>2097152</memory>
      <currentMemory unit='KiB'>2097152</currentMemory>
      <vcpu placement='static'>2</vcpu>
      <os>
      <type arch='x86_64' machine='pc-i440fx-artful'>hvm</type>
      <boot dev='cdrom'/>
      <boot dev='hd'/>
      </os>
      <features>
      <acpi/>
      <apic/>
      <hyperv>
      <relaxed state='on'/>
      <vapic state='on'/>
      <spinlocks state='on' retries='8191'/>
      </hyperv>
      </features>
      <cpu mode='custom' match='exact' check='partial'>
      <model fallback='allow'>Haswell-noTSX-IBRS</model>
      </cpu>
      <clock offset='localtime'>
      <timer name='rtc' tickpolicy='catchup'/>
      <timer name='pit' tickpolicy='delay'/>
      <timer name='hpet' present='no'/>
      <timer name='hypervclock' present='yes'/>
      </clock>
      <on_poweroff>destroy</on_poweroff>
      <on_reboot>restart</on_reboot>
      <on_crash>restart</on_crash>
      <pm>
      <suspend-to-mem enabled='no'/>
      <suspend-to-disk enabled='no'/>
      </pm>
      <devices>
      <emulator>/usr/bin/kvm-spice</emulator>
      <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none'/>
      <source file='/kvm/vhdd/A1.qcow2'/>
      <target dev='vda' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
      </disk>
      <controller type='pci' index='0' model='pci-root'/>
      <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
      </controller>
      <controller type='usb' index='0' model='nec-xhci'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
      </controller>
      <interface type='bridge'>
      <mac address='52:54:00:86:70:01'/>
      <source bridge='br0'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
      </interface>
      <serial type='pty'>
      <target port='0'/>
      </serial>
      <console type='pty'>
      <target type='serial' port='0'/>
      </console>
      <input type='tablet' bus='usb'>
      <address type='usb' bus='0' port='1'/>
      </input>
      <input type='mouse' bus='ps2'/>
      <input type='keyboard' bus='ps2'/>
      <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>
      <listen type='address' address='0.0.0.0'/>
      </graphics>
      <video>
      <model type='vga' vram='16384' heads='1' primary='yes'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
      </video>
      <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
      </memballoon>
      </devices>
      </domain>


      3)
      My usb device have numbers: 6, 5, 4, 7.
      Device number 8 is card reader.
      lsusb -



      Bus 002 Device 002: ID 8087:8000 Intel Corp. 
      Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
      Bus 001 Device 002: ID 8087:8008 Intel Corp.
      Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
      Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
      Bus 003 Device 003: ID 046d:c328 Logitech, Inc.
      Bus 003 Device 008: ID 05e3:0723 Genesys Logic, Inc. GL827L SD/MMC/MS Flash Card Reader
      Bus 003 Device 009: ID 067b:2528 Prolific Technology, Inc. Storage device (8gB thumb drive)
      Bus 003 Device 006: ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash Drive
      Bus 003 Device 005: ID 0951:1666 Kingston Technology DataTraveler G4
      Bus 003 Device 004: ID 0951:1666 Kingston Technology DataTraveler G4
      Bus 003 Device 002: ID 1a40:0201 Terminus Technology Inc. FE 2.1 7-port Hub
      Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


      4)
      lsusb -t



      /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
      /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
      |__ Port 5: Dev 2, If 0, Class=Hub, Driver=hub/7p, 480M
      |__ Port 4: Dev 9, If 0, Class=Mass Storage, Driver=usb-storage, 480M
      |__ Port 2: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 480M
      |__ Port 5: Dev 8, If 0, Class=Mass Storage, Driver=usbfs, 480M
      |__ Port 3: Dev 6, If 0, Class=Mass Storage, Driver=usbfs, 480M
      |__ Port 1: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 480M
      |__ Port 6: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
      |__ Port 6: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
      /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
      |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
      /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
      |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M


      So, how can i fix this problem?







      ubuntu usb virtual-machine kvm






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