DHCP Problem after FOG menu

[chrisyoung]

@george1421

This is what I get from the device manager under hardware ID

usb\vid_17E9&PID_431F&REV_0102&MI_05

[george1421]

@chrisyoung said in DHCP Problem after FOG menu:

usb\vid_17E9&PID_431F&REV_0102&MI_05

OK good the linux translation would be [17E9:431F]

DisplayLink Network Adapter NCM

From https://wiki.gentoo.org/wiki/DisplayLink
Required kernel parameters
Device Drivers —>
<> Network device support —>
<> USB Network Adapters —>
-M- CDC NCM support
<M> CDC MBIM support

http://nothen.com.ar/en/support-for-displaylink-adapters-on-linux/
Specific linux kernel driver code: http://nothen.com.ar/resources/displaylink-1.0.68.txz

If I understand correctly the cdc ncm module is needed and should be part of linux 4.7.2 onwards.

[Sebastian Roth]

I am not exactly sure but back in my mind I remember that we had issues with those CDC drivers and possibly removed those from the current kernel. Yes, looks like it: https://github.com/FOGProject/fogproject/blob/dev-branch/kernel/TomElliott.config.64

# CONFIG_USB_NET_CDCETHER is not set
# CONFIG_USB_NET_CDC_EEM is not set
# CONFIG_USB_NET_CDC_NCM is not set

Let me see if I find those old posts in the forum…

[chrisyoung]

@Sebastian-Roth

Is there a way to use an older Kernel that did have those settings?

Thanks,

Chris

[Sebastian Roth]

Quoting myself from the post here:

I just found out that all the RTL8152/8153 based connectors are blacklisted in the cdc_ether driver (see here: http://lxr.free-electrons.com/source/drivers/net/usb/cdc_ether.c#L686). Your microsoft NIC isn’t just because they don’t know/care about those yet I guess.

The issue we had was that MS surface devices wouldn’t properly boot with those CDC drivers in the kernel. As we didn’t need those back then we just removed them back in late 2015. I wouldn’t recommend using a kernel that old.

@Tom-Elliott Do you mind adding this driver to the kernel? http://nothen.com.ar/resources/displaylink-1.0.68.txz

@chrisyoung Or you could just build your very own kernel following the wiki article here: https://wiki.fogproject.org/wiki/index.php?title=Build_TomElliott_Kernel

[Tom Elliott]

@Sebastian-Roth Sorry to not read much, but do you by chance have straight up dmethod I could use to add?

[Tom Elliott]

@george1421, @Sebastian-Roth Turns out I can enable the NCM and MBIM without the EEM and CDCETHER (If I remember correctly, the cdcether was the thing causing all of our issues).

[Tom Elliott]

Kernels are updated with NCM and MBIM support.

Please try:

wget -O /var/www/fog/service/ipxe/bzImage https://fogproject.org/kernels/bzImage
wget -O /var/www/html/fog/service/ipxe/bzImage https://fogproject.org/kernels/bzImage
wget -O /var/www/fog/service/ipxe/bzImage32 https://fogproject.org/kernels/bzImage32
wget -O /var/www/html/fog/service/ipxe/bzImage32 https://fogproject.org/kernels/bzImage32

[george1421]

@Tom-Elliott Nice, it will be interesting to see if that addresses the issue.

It does appear that these DisplayLink chipset (and variants) are used in quite a few of these new external tablet docks from different hardware vendors. So if this addresses the OP’s issue without creating new headaches its a good move to add to the fog kernel.

[Sebastian Roth]

@Tom-Elliott Great stuff! Yeah from what I see in those MS surface posts it was only the CDC -ether driver causing the issue. Keeping my fingers crossed…