FreeBSD - support for DisplayLink Dell D3100 USB3.0 Dock?

[eddietorial_net]

I have a Dell D3100 USB3.0 Dock. DisplayLink has this device drivers available for Windows and Ubuntu and I can get to work with both these systems.

However, on FreeBSD, only USB peripherals connected to it work. The LAN port and HDMI ports do not seem to work.

Has anyone been able to get this Dell Hub to work on FreeBSD?

# uname -a
FreeBSD traveller 13.0-RELEASE-p1 FreeBSD 13.0-RELEASE-p1 #0: Wed May 26 22:15:09 UTC 2021     root@amd64-builder.daemonology.net:/usr/obj/usr/src/amd64.amd64/sys/GENERIC  amd64

# dmesg | grep Display
ugen0.7: <DisplayLink Dell D3100 USB3.0 Dock> at usbus0
ugen0.9: <DisplayLink Dell D3100 USB3.0 Dock> at usbus0


# kldstat
 5    1 0xffffffff8282d000     8780 udl.ko
 6    2 0xffffffff82836000     8f40 videomode.ko

 

[eddietorial_net]

The last I checked, the only component from the Dell D3100 USB3.0 Dock that does not work on FreeBSD 13.0-RELEASE, is the display driver.

There are instructions for Porting the DisplayLink Ubuntu driver to other Linux distributions. I am not a programmer though. Is there anyone who has attempted to port this to FreeBSD?

 

[SirDice]

I don't think we have support for USB-C display connections.

 

[jbo@]

I don't think we have support for USB-C display connections.

Actually we do: udl(4) (given that USB-C is "just the connector").
That driver also seems to auto-load correctly in pinned's case. However, I don't have much information beyond this.

I am experiencing similar "issues" on a Lenovo Thinkpad USB-C hybrid dock. After loading udl(4) the extra display outputs do show up on xrandr -q but I couldn't get them to output anything.
Unfortunately, I did not manage to check whether udl(4) is even compatible with that dock.

pinned do the extra display ports show up on xrandr -q?

 

[eddietorial_net]

jbodenmann, you're right. The display ports on the dock do show up on xrandr -q, but no output.

% xrandr -q
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 16384 x 16384
eDP-1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 309mm x 173mm
1366x768 60.00*+
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
700x525 59.98
800x450 59.95 59.82
640x512 60.02
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
640x400 59.88 59.98
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)

 

[SirDice]

Actually we do: udl(4)(4) (given that USB-C is "just the connector").

Neat. I did not expect that.

 

[SirDice]

The display ports on the dock do show up on xrandr -q, but no output.

Did you try to restart X? Although it does 'automatically' detect a lot of hardware nowadays I think it still has problems with graphics adapters appearing and disappearing while it's running.

 

[eddietorial_net]

Did you try to restart X?

Yes, it has no effect.