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#1 2017-07-13 11:28:28

larsch
Member
Registered: 2017-07-13
Posts: 9

[SOLVED] r8153 USB Network Device shows up as CD-ROM on boot

I have a couple of Belkin B2B048 USB 3.0 Gigabit Ethernet adapters. When inserted at boot time, they show up as a CD-ROM drive with the drivers. I have to unplug and replug to get them to show up as Ethernet devices.

[    1.772368] usb 1-1.4: new high-speed USB device number 4 using ehci-pci
[    1.870723] usb-storage 1-1.4:1.0: USB Mass Storage device detected
[    1.871719] scsi host7: usb-storage 1-1.4:1.0
[    2.883094] scsi 7:0:0:0: CD-ROM            Realtek  USB CD-ROM       2.00 PQ: 0 ANSI: 0

When it works it loads the r8152 driver correctly:

[    1.762322] usb 1-1.4: new high-speed USB device number 4 using ehci-pci
[    1.939007] usb 1-1.4: reset high-speed USB device number 4 using ehci-pci
[    2.100533] r8152 1-1.4:1.0 eth0: v1.08.9
[    5.550903] r8152 1-1.4:1.0 enp0s22u1u4: renamed from eth0
[    6.327473] r8152 1-1.4:1.0 enp0s22u1u4: carrier on

I have tried adding the kernel modules to the initramfs in /etc/mkinitcpio.conf. This makes it load the correct driver on every second boot only. The other half of the time, it still shows up as a CD-ROM.

MODULES="usbnet cdc_ether r8152 mii"

I have found various info regarding 3G modems that require a mode switch command via usb_modeswitch, but no clear info on how to trigger a Realtek device to switch to Ethernet mode.

I've tried resetting the device as follows, but it still appears as a CD-ROM.

echo 0 > /sys/bus/usb/devices/1-1.4/authorized
echo 1 > /sys/bus/usb/devices/1-1.4/authorized

Output from lsusb when appearing as CD-ROM:

Bus 001 Device 004: ID 0bda:8152 Realtek Semiconductor Corp. RTL8152 Fast Ethernet Adapter
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x0bda Realtek Semiconductor Corp.
  idProduct          0x8152 RTL8152 Fast Ethernet Adapter
  bcdDevice           30.00
  iManufacturer           1
  iProduct                2
  iSerial                 6
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              180mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              4
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x05  EP 5 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0

Output from lsusb when appearing as Gigabit adapter:

Bus 001 Device 004: ID 0bda:8153 Realtek Semiconductor Corp. RTL8153 Gigabit Ethernet Adapter
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.10
  bDeviceClass            0
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x0bda Realtek Semiconductor Corp.
  idProduct          0x8153 RTL8153 Gigabit Ethernet Adapter
  bcdDevice           30.00
  iManufacturer           1 Realtek
  iProduct                2 USB 10/100/1000 LAN
  iSerial                 6 000001000000
  bNumConfigurations      2
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           39
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              180mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol      0
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0002  1x 2 bytes
        bInterval               8
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           80
    bNumInterfaces          2
    bConfigurationValue     2
    iConfiguration          0
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              180mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         2 Communications
      bInterfaceSubClass      6 Ethernet Networking
      bInterfaceProtocol      0
      iInterface              5 CDC Communications Control
      CDC Header:
        bcdCDC               1.10
      CDC Union:
        bMasterInterface        0
        bSlaveInterface         1
      CDC Ethernet:
        iMacAddress                      3 A0CEC81FC6F2
        bmEthernetStatistics    0x00000000
        wMaxSegmentSize               1514
        wNumberMCFilters            0x0000
        bNumberPowerFilters              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0010  1x 16 bytes
        bInterval               8
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass        10 CDC Data
      bInterfaceSubClass      0
      bInterfaceProtocol      0
      iInterface              0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           2
      bInterfaceClass        10 CDC Data
      bInterfaceSubClass      0
      bInterfaceProtocol      0
      iInterface              4 Ethernet Data
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
Binary Object Store Descriptor:
  bLength                 5
  bDescriptorType        15
  wTotalLength           22
  bNumDeviceCaps          2
  USB 2.0 Extension Device Capability:
    bLength                 7
    bDescriptorType        16
    bDevCapabilityType      2
    bmAttributes   0x00000002
      HIRD Link Power Management (LPM) Supported
  SuperSpeed USB Device Capability:
    bLength                10
    bDescriptorType        16
    bDevCapabilityType      3
    bmAttributes         0x02
      Latency Tolerance Messages (LTM) Supported
    wSpeedsSupported   0x000e
      Device can operate at Full Speed (12Mbps)
      Device can operate at High Speed (480Mbps)
      Device can operate at SuperSpeed (5Gbps)
    bFunctionalitySupport   2
      Lowest fully-functional device speed is High Speed (480Mbps)
    bU1DevExitLat          10 micro seconds
    bU2DevExitLat        2047 micro seconds
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
  (Bus Powered)

Last edited by larsch (2017-07-13 12:36:25)

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#2 2017-07-13 12:07:04

tom.ty89
Member
Registered: 2012-11-15
Posts: 897

Re: [SOLVED] r8153 USB Network Device shows up as CD-ROM on boot

Try these to see if any of them switches the mode:

eject -r /dev/srN
eject -s /dev/srN

If not you may need to find a way to completely reset the USB device (as if you replugged it). Use a udev rule to run whatever necessary to switch the mode.

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#3 2017-07-13 12:36:04

larsch
Member
Registered: 2017-07-13
Posts: 9

Re: [SOLVED] r8153 USB Network Device shows up as CD-ROM on boot

The eject command didn't do the trick, but this did:

usb_modeswitch -v 0bda -p 8152 -R

Thank's for you udev tip. I've added this rule and it seems to do the trick:

/etc/udev/rules.d/80-r8152-cdrom.rules:

ACTION=="add", SUBSYSTEM=="usb", ENV{ID_VENDOR_ID}=="0bda", ENV{ID_MODEL_ID}=="8152", RUN+="/usr/bin/usb_modeswitch -v 0bda -p 8152 -R"

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#4 2019-06-19 19:38:34

jjakob
Member
Registered: 2019-06-19
Posts: 1

Re: [SOLVED] r8153 USB Network Device shows up as CD-ROM on boot

You may want to post to the usb-modeswitch forum with the details of your device to have it added.
http://www.draisberghof.de/usb_modeswitch/bb/

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#5 2019-06-19 22:34:02

2ManyDogs
Forum Moderator
Registered: 2012-01-15
Posts: 4,645

Re: [SOLVED] r8153 USB Network Device shows up as CD-ROM on boot

This thread is three years old and marked [SOLVED]. Please do not necrobump.

Closing.


How to post. A sincere effort to use modest and proper language and grammar is a sign of respect toward the community.

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