Not working on Ubuntu 14.04 LTS

[COjohn]

I had been using DisplayLink for a while and then somehow it stopped working (I think after a recent Ubuntu update). I then fought through trying to get it to work again after downloading the latest version (1.1.68). It did not work. I finally found a sequence that seemed to work for the 1.1.68 install, below, and it worked for the configuration of one external monitor plugged into my laptop directly via HDMI port and another monitor plugged into a Dell 3100 dock w/ displaylink. This configuration worked across a reboot, but then after a later reboot, it no longer works.

I'm tired of fighting with this. I'd like it to work again and I don't want it to stop working every time Ubuntu releases a basic update.

Attached are a couple logs from the most recent times I ran it as I've been trying to get this thing to work again this afternoon.

Sequence <I think> worked my last time around:
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1. Uninstall displaylink: sudo displaylink-installer uninstall

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1. Update/upgrade current linux dist' by running sudo apt-get update and then sudo apt-get dist-upgrade

1. Then did the following from the below link:
2. It might be necessary to manually opt into this new stack on previous 14.04.0 and 14.04.1 releases by running following command which will install the linux-generic-lts-utopic and xserver-xorg-lts-utopic packages:
3. sudo apt-get install linux-generic-lts-utopic xserver-xorg-lts-utopic libegl1-mesa-drivers-lts-utopic xserver-xorg-video-all-lts-utopic xserver-xorg-input-all-lts-utopic
4. If you are on an amd64 system that boots with UEFI, you will also need the matching signed kernel:
5. sudo apt-get install linux-signed-generic-lts-utopic
6. per http://support.displaylink.com/knowl...ware-on-ubuntu

1. Downloaded the latest version (1.1.62) from the displaylink.com site and finished the rest of the instructions.

1. NO-GO, so uninstall using same instructions as above

1. Installed the LTS hardware enablement stack using the below, from the following link:
2. https://wiki.ubuntu.com/TrustyTahr/R...ablement_Stack
3. Anyone wishing to opt into the hardware enablement stack for Trusty may do so by running following command which will install the linux-generic-lts-wily and xserver-xorg-lts-wily packages:
4. sudo apt-get install --install-recommends linux-generic-lts-wily xserver-xorg-core-lts-wily xserver-xorg-lts-wily xserver-xorg-video-all-lts-wily xserver-xorg-input-all-lts-wily libwayland-egl1-mesa-lts-wily
5. If you are on an amd64 system that boots with UEFI, you will also need the matching signed kernel:
6. sudo apt-get install linux-signed-generic-lts-wily
7. For anyone interested, the specifics regarding the exact policies and procedures regarding the support, maintenance, and upgrade paths for the hardware enablement stack has been documented at the following location:
8. https://wiki.ubuntu.com/Kernel/LTSEnablementStack

1. Reinstalled the same newest version listed above per the instructions from the above installation link

[COjohn]

I also just noticed, that in this last configuration my system no longer suspends...it just locks. I uninstalled displaylink again and it now suspends as expected.

[neovin]

Hello,

It can be related to the problem (activation of secure boot and validation of signed drivers) in thread :
http://www.displaylink.org/forum/sho...0669#post80669

Regards.