Bug#833918: linux: Please enable cdc_ncm and cdc_mbim in d-i to support 'Dell 4-in-1 Adapter' Ethernet
Source: linux
Version: 4.6.4-1
Severity: normal
Hi!
While reinstalling my Dell XPS-13 9343 yesterday, I ran into the problem that the Ethernet
adapter in my external 'Dell 4-in-1 Adapter' [1] was not detected. This adapter is necessary
because the XPS ultrabook series do not have an internal Ethernet adapter but require an
external USB Ethernet adapter, with the 4-in-1 adapter from Dell being the standard
accessory.
This adapter uses the cdc_ncm/cdc_mbim kernel modules which are currently being disabled for
debian-installer as those were suspected to be used by modems only [2], which is not the
case, however.
Here's the relevant output of lsusb, lsmod and dmesg after attaching the adapter my XPS-13
after installing with d-i Alpha 7 with a workaround. After plugging the adapter in, no
additional configuration is necessary. The Ethernet adapter just works out of the box
and we should therefore enable these modules in d-i, I think.
glaubitz@ikarus:~$ lsusb |grep Bus\ 002
Bus 002 Device 005: ID 17e9:436f DisplayLink
Bus 002 Device 004: ID 2109:0210 VIA Labs, Inc.
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
glaubitz@ikarus:~$ lsmod |grep cdc
cdc_mbim 16384 0
cdc_wdm 20480 1 cdc_mbim
cdc_ncm 32768 1 cdc_mbim
cdc_ether 16384 0
usbnet 40960 3 cdc_mbim,cdc_ncm,cdc_ether
usbcore 241664 14 btusb,snd_usb_audio,uvcvideo,snd_usbmidi_lib,ehci_hcd,ehci_pci,usbhid,usbnet,cdc_mbim,cdc_ncm,cdc_wdm,xhci_hcd,xhci_pci,cdc_ether
glaubitz@ikarus:~$ dmesg | tail -n30
[ 9104.050604] usb 2-1: new SuperSpeed USB device number 4 using xhci_hcd
[ 9104.067777] usb 2-1: New USB device found, idVendor=2109, idProduct=0210
[ 9104.067782] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 9104.067785] usb 2-1: Product: USB3.0 Hub
[ 9104.067786] usb 2-1: Manufacturer: VIA Labs, Inc.
[ 9104.069404] hub 2-1:1.0: USB hub found
[ 9104.069854] hub 2-1:1.0: 1 port detected
[ 9104.178489] usb 1-1: new high-speed USB device number 11 using xhci_hcd
[ 9104.511724] usb 1-1: New USB device found, idVendor=2109, idProduct=2210
[ 9104.511731] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 9104.511734] usb 1-1: Product: USB2.0 Hub
[ 9104.511736] usb 1-1: Manufacturer: VIA Labs, Inc.
[ 9104.512978] hub 1-1:1.0: USB hub found
[ 9104.514078] hub 1-1:1.0: 4 ports detected
[ 9105.578571] usb 2-1.1: new SuperSpeed USB device number 5 using xhci_hcd
[ 9105.595153] usb 2-1.1: New USB device found, idVendor=17e9, idProduct=436f
[ 9105.595157] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 9105.595160] usb 2-1.1: Product: Dell 4-in-1 Adapter
[ 9105.595162] usb 2-1.1: Manufacturer: DisplayLink
[ 9105.595164] usb 2-1.1: SerialNumber: 1505140265
[ 9105.602515] usb 2-1.1: Warning! Unlikely big volume range (=511), cval->res is probably wrong.
[ 9105.602522] usb 2-1.1: [14] FU [Dell USB Audio Playback Volume] ch = 6, val = -8176/0/16
[ 9105.605635] cdc_ncm 2-1.1:1.5: MAC-Address: 9c:eb:e8:20:f5:5b
[ 9105.605640] cdc_ncm 2-1.1:1.5: setting rx_max = 16384
[ 9105.605743] cdc_ncm 2-1.1:1.5: setting tx_max = 16384
[ 9105.605991] cdc_ncm 2-1.1:1.5 usb0: register 'cdc_ncm' at usb-0000:00:14.0-1.1, CDC NCM, 9c:eb:e8:20:f5:5b
[ 9105.680400] cdc_ncm 2-1.1:1.5 enx9cebe820f55b: renamed from usb0
[ 9105.757799] IPv6: ADDRCONF(NETDEV_UP): enx9cebe820f55b: link is not ready
[ 9105.757884] IPv6: ADDRCONF(NETDEV_UP): enx9cebe820f55b: link is not ready
[ 9108.770155] cdc_ncm 2-1.1:1.5 enx9cebe820f55b: network connection: disconnected
glaubitz@ikarus:~$
Thanks,
Adrian
> [1] http://accessories.us.dell.com/sna/productdetail.aspx?c=us&cs=19&l=en&sku=470-ABHH
> [2] https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/installer/modules/nic-usb-modules
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer - glaubitz@debian.org
`. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
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