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I have an mBeat Hayman USB hub with integrated C-Media audio.

Under Raspbian, the hub is recognised as a 4 port hub, but the C-Media audio device (which is uses one of the ports) isn't recognised.

The C-Media device (0d8c:0014) wasn't in the latest usb.ids file so I added it to my local copy (it is a CM108AH Audio Controller). There are several CM108 controllers in the usb.ids files with various other product codes.

When I plug in the USB hub, the hub part gets recognised, but the C-Media device is not mentioned (I tailed /var/log/messages and used udevadm monitor).

If I plug in another C-Media USB device to one of the free ports, I also get nothing. The same device is recognised OK when plugged directly into the PI.

I had thought that the PI wasn't recognising the vendor:product combination, but see that an already working audio device couldn't be seen through the hub makes me think there is something wrong with the way the hub is being connected/loaded.

The hub and audio cards are recognised in both Windows and Debian.

Here is a dump of plugging it into the Debian PC.

Feb  1 15:08:15 Taylor kernel: [   66.027821] usb 1-1.1.3: new high-speed USB device number 13 using ehci-pci
Feb  1 15:08:15 Taylor kernel: [   66.122962] usb 1-1.1.3: New USB device found, idVendor=2109, idProduct=2812
Feb  1 15:08:15 Taylor kernel: [   66.122976] usb 1-1.1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Feb  1 15:08:15 Taylor kernel: [   66.122979] usb 1-1.1.3: Product: USB2.0 Hub             
Feb  1 15:08:15 Taylor kernel: [   66.122981] usb 1-1.1.3: Manufacturer: VIA Labs, Inc.         
Feb  1 15:08:15 Taylor kernel: [   66.123394] hub 1-1.1.3:1.0: USB hub found
Feb  1 15:08:15 Taylor kernel: [   66.123692] hub 1-1.1.3:1.0: 4 ports detected
Feb  1 15:08:16 Taylor kernel: [   66.412118] usb 1-1.1.3.3: new full-speed USB device number 14 using ehci-pci
Feb  1 15:08:16 Taylor kernel: [   66.518038] usb 1-1.1.3.3: New USB device found, idVendor=0d8c, idProduct=0014
Feb  1 15:08:16 Taylor kernel: [   66.518051] usb 1-1.1.3.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Feb  1 15:08:16 Taylor kernel: [   66.518054] usb 1-1.1.3.3: Product: USB Audio Device
Feb  1 15:08:16 Taylor kernel: [   66.518056] usb 1-1.1.3.3: Manufacturer: C-Media Electronics Inc.
Feb  1 15:08:16 Taylor kernel: [   66.535702] input: C-Media Electronics Inc. USB Audio Device as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1.3/1-1.1.3.3/1-1.1.3.3:1.3/0003:0D8C:0014.0005/input/input15
Feb  1 15:08:16 Taylor kernel: [   66.535861] hid-generic 0003:0D8C:0014.0005: input,hidraw0: USB HID v1.00 Device [C-Media Electronics Inc. USB Audio Device] on usb-0000:00:1a.0-1.1.3.3/input3

This udevadm monitor output shows plugging in the hub/C-Media combo, and then plugging in a the other C-Media device and a thumbdrive.

monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent

KERNEL[7841.295251] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4 (usb)
ACTION=add
BUSNUM=001
DEVNAME=/dev/bus/usb/001/071
DEVNUM=071
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4
DEVTYPE=usb_device
MAJOR=189
MINOR=70
PRODUCT=2109/2812/9090
SEQNUM=1210
SUBSYSTEM=usb
TYPE=9/0/1

KERNEL[7841.299058] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.0 (usb)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.0
DEVTYPE=usb_interface
INTERFACE=9/0/0
MODALIAS=usb:v2109p2812d9090dc09dsc00dp01ic09isc00ip00in00
PRODUCT=2109/2812/9090
SEQNUM=1211
SUBSYSTEM=usb
TYPE=9/0/1

UDEV  [7841.325060] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4 (usb)
ACTION=add
BUSNUM=001
DEVNAME=/dev/bus/usb/001/071
DEVNUM=071
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4
DEVTYPE=usb_device
ID_BUS=usb
ID_FOR_SEAT=usb-platform-3f980000_usb-usb-0_1_4
ID_MODEL=USB2.0_Hub
ID_MODEL_ENC=USB2.0\x20Hub\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
ID_MODEL_FROM_DATABASE=SMC9514 Hub
ID_MODEL_ID=2812
ID_PATH=platform-3f980000.usb-usb-0:1.4
ID_PATH_TAG=platform-3f980000_usb-usb-0_1_4
ID_REVISION=9090
ID_SERIAL=VIA_Labs__Inc._USB2.0_Hub
ID_USB_INTERFACES=:090000:
ID_VENDOR=VIA_Labs__Inc.
ID_VENDOR_ENC=VIA\x20Labs\x2c\x20Inc.\x20\x20\x20\x20\x20\x20\x20\x20\x20
ID_VENDOR_FROM_DATABASE=Standard Microsystems Corp.
ID_VENDOR_ID=2109
MAJOR=189
MINOR=70
PRODUCT=2109/2812/9090
SEQNUM=1210
SUBSYSTEM=usb
TAGS=:seat:
TYPE=9/0/1
USEC_INITIALIZED=41294454

UDEV  [7841.331009] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.0 (usb)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.0
DEVTYPE=usb_interface
ID_USB_CLASS_FROM_DATABASE=Hub
ID_USB_PROTOCOL_FROM_DATABASE=Single TT
INTERFACE=9/0/0
MODALIAS=usb:v2109p2812d9090dc09dsc00dp01ic09isc00ip00in00
PRODUCT=2109/2812/9090
SEQNUM=1211
SUBSYSTEM=usb
TYPE=9/0/1
USEC_INITIALIZED=296049

KERNEL[7848.522824] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4 (usb)
ACTION=add
BUSNUM=001
DEVNAME=/dev/bus/usb/001/076
DEVNUM=076
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4
DEVTYPE=usb_device
MAJOR=189
MINOR=75
PRODUCT=781/5576/100
SEQNUM=1212
SUBSYSTEM=usb
TYPE=0/0/0

KERNEL[7848.523673] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0 (usb)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0
DEVTYPE=usb_interface
INTERFACE=8/6/80
MODALIAS=usb:v0781p5576d0100dc00dsc00dp00ic08isc06ip50in00
PRODUCT=781/5576/100
SEQNUM=1213
SUBSYSTEM=usb
TYPE=0/0/0

KERNEL[7848.525540] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3 (scsi)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3
DEVTYPE=scsi_host
SEQNUM=1214
SUBSYSTEM=scsi

KERNEL[7848.525682] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/scsi_host/host3 (scsi_host)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/scsi_host/host3
SEQNUM=1215
SUBSYSTEM=scsi_host

UDEV  [7848.536910] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4 (usb)
ACTION=add
BUSNUM=001
DEVNAME=/dev/bus/usb/001/076
DEVNUM=076
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4
DEVTYPE=usb_device
ID_BUS=usb
ID_DRIVE_THUMB=1
ID_MODEL=Cruzer_Facet
ID_MODEL_ENC=Cruzer\x20Facet
ID_MODEL_FROM_DATABASE=Cruzer Facet
ID_MODEL_ID=5576
ID_REVISION=0100
ID_SERIAL=SanDisk_Cruzer_Facet_4C530001091203122464
ID_SERIAL_SHORT=4C530001091203122464
ID_USB_INTERFACES=:080650:
ID_VENDOR=SanDisk
ID_VENDOR_ENC=SanDisk
ID_VENDOR_FROM_DATABASE=SanDisk Corp.
ID_VENDOR_ID=0781
MAJOR=189
MINOR=75
PRODUCT=781/5576/100
SEQNUM=1212
SUBSYSTEM=usb
TYPE=0/0/0
USEC_INITIALIZED=48522861

UDEV  [7848.543908] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0 (usb)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0
DEVTYPE=usb_interface
ID_MODEL_FROM_DATABASE=Cruzer Facet
ID_VENDOR_FROM_DATABASE=SanDisk Corp.
INTERFACE=8/6/80
MODALIAS=usb:v0781p5576d0100dc00dsc00dp00ic08isc06ip50in00
PRODUCT=781/5576/100
SEQNUM=1213
SUBSYSTEM=usb
TYPE=0/0/0
USEC_INITIALIZED=524393

UDEV  [7848.548315] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3 (scsi)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3
DEVTYPE=scsi_host
SEQNUM=1214
SUBSYSTEM=scsi
USEC_INITIALIZED=524776

UDEV  [7848.553514] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/scsi_host/host3 (scsi_host)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/scsi_host/host3
SEQNUM=1215
SUBSYSTEM=scsi_host
USEC_INITIALIZED=525083

KERNEL[7849.522380] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0 (scsi)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0
DEVTYPE=scsi_target
SEQNUM=1216
SUBSYSTEM=scsi

KERNEL[7849.522510] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0 (scsi)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0
DEVTYPE=scsi_device
MODALIAS=scsi:t-0x00
SEQNUM=1217
SUBSYSTEM=scsi

KERNEL[7849.522609] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/scsi_disk/3:0:0:0 (scsi_disk)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/scsi_disk/3:0:0:0
SEQNUM=1218
SUBSYSTEM=scsi_disk

KERNEL[7849.523393] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/scsi_device/3:0:0:0 (scsi_device)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/scsi_device/3:0:0:0
SEQNUM=1219
SUBSYSTEM=scsi_device

KERNEL[7849.524049] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/scsi_generic/sg0 (scsi_generic)
ACTION=add
DEVNAME=/dev/sg0
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/scsi_generic/sg0
MAJOR=21
MINOR=0
SEQNUM=1220
SUBSYSTEM=scsi_generic

KERNEL[7849.524624] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/bsg/3:0:0:0 (bsg)
ACTION=add
DEVNAME=/dev/bsg/3:0:0:0
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/bsg/3:0:0:0
MAJOR=252
MINOR=0
SEQNUM=1221
SUBSYSTEM=bsg

KERNEL[7849.525789] add      /devices/virtual/bdi/8:0 (bdi)
ACTION=add
DEVPATH=/devices/virtual/bdi/8:0
SEQNUM=1222
SUBSYSTEM=bdi

UDEV  [7849.525900] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0 (scsi)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0
DEVTYPE=scsi_target
SEQNUM=1216
SUBSYSTEM=scsi
USEC_INITIALIZED=521757

UDEV  [7849.531389] add      /devices/virtual/bdi/8:0 (bdi)
ACTION=add
DEVPATH=/devices/virtual/bdi/8:0
SEQNUM=1222
SUBSYSTEM=bdi
USEC_INITIALIZED=49526882

UDEV  [7849.534675] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0 (scsi)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0
DEVTYPE=scsi_device
MODALIAS=scsi:t-0x00
SEQNUM=1217
SUBSYSTEM=scsi
USEC_INITIALIZED=522047

UDEV  [7849.540904] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/scsi_device/3:0:0:0 (scsi_device)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/scsi_device/3:0:0:0
SEQNUM=1219
SUBSYSTEM=scsi_device
USEC_INITIALIZED=526424

UDEV  [7849.542865] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/scsi_disk/3:0:0:0 (scsi_disk)
ACTION=add
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/scsi_disk/3:0:0:0
SEQNUM=1218
SUBSYSTEM=scsi_disk
USEC_INITIALIZED=526160

KERNEL[7849.544836] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/block/sda (block)
ACTION=add
DEVNAME=/dev/sda
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/block/sda
DEVTYPE=disk
MAJOR=8
MINOR=0
SEQNUM=1223
SUBSYSTEM=block

KERNEL[7849.544983] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/block/sda/sda1 (block)
ACTION=add
DEVNAME=/dev/sda1
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/block/sda/sda1
DEVTYPE=partition
MAJOR=8
MINOR=1
SEQNUM=1224
SUBSYSTEM=block

UDEV  [7849.546656] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/scsi_generic/sg0 (scsi_generic)
ACTION=add
DEVNAME=/dev/sg0
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/scsi_generic/sg0
MAJOR=21
MINOR=0
SEQNUM=1220
SUBSYSTEM=scsi_generic
USEC_INITIALIZED=49526596

UDEV  [7849.552143] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/bsg/3:0:0:0 (bsg)
ACTION=add
DEVNAME=/dev/bsg/3:0:0:0
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/bsg/3:0:0:0
MAJOR=252
MINOR=0
SEQNUM=1221
SUBSYSTEM=bsg
USEC_INITIALIZED=49526757

UDEV  [7849.655860] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/block/sda (block)
ACTION=add
DEVLINKS=/dev/disk/by-id/usb-SanDisk_Cruzer_Facet_4C530001091203122464-0:0 /dev/disk/by-path/platform-3f980000.usb-usb-0:1.4.4:1.0-scsi-0:0:0:0
DEVNAME=/dev/sda
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/block/sda
DEVTYPE=disk
ID_BUS=usb
ID_DRIVE_THUMB=1
ID_INSTANCE=0:0
ID_MODEL=Cruzer_Facet
ID_MODEL_ENC=Cruzer\x20Facet\x20\x20\x20\x20
ID_MODEL_ID=5576
ID_PART_TABLE_TYPE=dos
ID_PATH=platform-3f980000.usb-usb-0:1.4.4:1.0-scsi-0:0:0:0
ID_PATH_TAG=platform-3f980000_usb-usb-0_1_4_4_1_0-scsi-0_0_0_0
ID_REVISION=1.00
ID_SERIAL=SanDisk_Cruzer_Facet_4C530001091203122464-0:0
ID_SERIAL_SHORT=4C530001091203122464
ID_TYPE=disk
ID_USB_DRIVER=usb-storage
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_VENDOR=SanDisk
ID_VENDOR_ENC=SanDisk\x20
ID_VENDOR_ID=0781
MAJOR=8
MINOR=0
SEQNUM=1223
SUBSYSTEM=block
TAGS=:systemd:
UDISKS_PARTITION_TABLE=1
UDISKS_PARTITION_TABLE_COUNT=1
UDISKS_PARTITION_TABLE_SCHEME=mbr
UDISKS_PRESENTATION_NOPOLICY=0
USEC_INITIALIZED=544893

UDEV  [7849.791752] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/block/sda/sda1 (block)
ACTION=add
DEVLINKS=/dev/disk/by-id/usb-SanDisk_Cruzer_Facet_4C530001091203122464-0:0-part1 /dev/disk/by-path/platform-3f980000.usb-usb-0:1.4.4:1.0-scsi-0:0:0:0-part1 /dev/disk/by-uuid/F040-35E6
DEVNAME=/dev/sda1
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/block/sda/sda1
DEVTYPE=partition
ID_BUS=usb
ID_DRIVE_THUMB=1
ID_FS_TYPE=vfat
ID_FS_USAGE=filesystem
ID_FS_UUID=F040-35E6
ID_FS_UUID_ENC=F040-35E6
ID_FS_VERSION=FAT32
ID_INSTANCE=0:0
ID_MODEL=Cruzer_Facet
ID_MODEL_ENC=Cruzer\x20Facet\x20\x20\x20\x20
ID_MODEL_ID=5576
ID_PART_ENTRY_DISK=8:0
ID_PART_ENTRY_NUMBER=1
ID_PART_ENTRY_OFFSET=32
ID_PART_ENTRY_SCHEME=dos
ID_PART_ENTRY_SIZE=15630304
ID_PART_ENTRY_TYPE=0xb
ID_PART_TABLE_TYPE=dos
ID_PATH=platform-3f980000.usb-usb-0:1.4.4:1.0-scsi-0:0:0:0
ID_PATH_TAG=platform-3f980000_usb-usb-0_1_4_4_1_0-scsi-0_0_0_0
ID_REVISION=1.00
ID_SERIAL=SanDisk_Cruzer_Facet_4C530001091203122464-0:0
ID_SERIAL_SHORT=4C530001091203122464
ID_TYPE=disk
ID_USB_DRIVER=usb-storage
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_VENDOR=SanDisk
ID_VENDOR_ENC=SanDisk\x20
ID_VENDOR_ID=0781
MAJOR=8
MINOR=1
SEQNUM=1224
SUBSYSTEM=block
TAGS=:systemd:
UDISKS_PARTITION=1
UDISKS_PARTITION_ALIGNMENT_OFFSET=0
UDISKS_PARTITION_NUMBER=1
UDISKS_PARTITION_OFFSET=16384
UDISKS_PARTITION_SCHEME=mbr
UDISKS_PARTITION_SIZE=8002715648
UDISKS_PARTITION_SLAVE=/sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/host3/target3:0:0/3:0:0:0/block/sda
UDISKS_PARTITION_TYPE=0x0b
UDISKS_PRESENTATION_NOPOLICY=0
USEC_INITIALIZED=545181

I didn't get a udev monitor of doing the same on the Debian PC though.

Is the hub not being loaded properly? It looks like just audio cards aren't being detected through it (although I have only tried a thumbdrive). The hub's USB ID (2109:2812) wasn't in my original usb.ids file, so perhaps it is a new model?

Does ehci-pci have anything to do with it? The Debian machine reports

new full-speed USB device number 14 using ehci-pci

Raspbian reports

new full-speed USB device number 83 using dwc_otg

Any help greatly appreciated.

0

Just to clarify my comment above, here is an extract from the linked page.

1. Interoperability between the Raspberry Pi and USB3.0 hubs

There is an issue with USB3.0 hubs in conjunction with the use of Full- or Low-speed devices (most mice, most keyboards) and the Raspberry Pi. A bug in most USB3.0 hub hardware means that the Raspberry Pi cannot talk to Full- or Low-speed devices connected to a USB3.0 hub.

0

Just a thought.

When you modified the usb.ids, did you reboot your device to see if the changes you made to the file will indeed work?

  • I am fairly sure I did, but it was over 2.5 years ago. I am confident it was the hub hardware problem I mentioned. – Justin Wright Oct 21 '18 at 22:54

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