I noticed this might be yet another DisplayLink outcry - but I thought I give it a go anyway. So the usual story - I have got a DisplayLink adaptor Kensington USB3.0 Video Adapter, and doesn't look like is ever going to work.

It is reorganised when I plug it in.

#uname -r

3.13.0-35-generic



# dmesg



[52049.856134] usb 2-2: new high-speed USB device number 8 using ehci-pci

[52049.989282] usb 2-2: New USB device found, idVendor=17e9, idProduct=430f

[52049.989290] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3

[52049.989295] usb 2-2: Product: Kensington USB3.0 Video Adapter

[52049.989299] usb 2-2: Manufacturer: DisplayLink

[52049.989304] usb 2-2: SerialNumber: 10024214

[52059.384628] usbcore: registered new interface driver udlfb

[52402.886345] usbcore: deregistering interface driver udlfb

[52418.187053] usbcore: registered new interface driver udlfb

[53522.914146] nouveau E[   PFIFO][0000:01:00.0] CACHE_ERROR - ch 2 [Xorg[1276]] subc 0 mthd 0x0060 data 0xbeef0201

I have blacklisted udl in /etc/modprobe.d/blacklist-custom.conf and removed removed udlfb from /etc/modprobe.d/blacklist-framebuffer.conf.

I have also manually loaded the udlfb driver.

# modprobe udlfb



[52418.187053] usbcore: registered new interface driver udlfb

Ok so basically I am not moving forward with this - because when I do;

# ls /dev | grep fb

fb0 is the only device block found - which indicates to me that udlfb is not detecting the device. udevadm info on fb0 reveals - it is the main laptop screen.

# udevadm info -a -p $(udevadm info -q path -n /dev/fb0)



 looking at device '/devices/pci0000:00/0000:00:01.0/0000:01:00.0/graphics/fb0':

    KERNEL=="fb0"

    SUBSYSTEM=="graphics"

    DRIVER==""

    ATTR{pan}=="0,0"

    ATTR{name}=="nouveaufb"

    ATTR{mode}==""

    ATTR{console}==""

    ATTR{blank}==""

    ATTR{modes}=="U:1440x900p-0"

    ATTR{state}=="0"

    ATTR{bits_per_pixel}=="32"

    ATTR{cursor}==""

    ATTR{rotate}=="0"

    ATTR{stride}=="7680"

    ATTR{virtual_size}=="1920,1080"

I currently have 1 provider and that is the main screeen.

# xrandr --listproviders



Providers: number : 1

Provider 0: id: 0x65 cap: 0x1, Source Output crtcs: 2 outputs: 4 associated providers: 0 name:nouveau

Digging through /sys/class/graphicsI noticed fbcon with this settings:

  looking at device '/devices/virtual/graphics/fbcon':

    KERNEL=="fbcon"

    SUBSYSTEM=="graphics"

    DRIVER==""

    ATTR{cursor_blink}=="0"

    ATTR{rotate}=="0"

Let me also mentioned that I have tried udl with udlfb blacklisted with no joy neither.

OK so long story short - Is anyone managed to get similar DisplayLink USB 3.0 Adaptor working with Ubuntu 14.04 LTS or similar?