Ubuntu 17.10 with Targus USB3.0 and ThinkPad T470S

[jeremyco]

Hi,

I have fresh installed Ubuntu 17.10 on ThinkPad T470S, and I've already tried both workarounds suggested here http://support.displaylink.com/knowledgebase/articles/1181623. I've also tried other suggestions that I've found on this forum but nothing worked, and I still can't get my second monitor to work.

DisplayLink is recognized on the USB bus

zoran@zoran-ThinkPad-T470s:~$ lsusb -d 17e9:
Bus 002 Device 006: ID 17e9:4306 DisplayLink
zoran@zoran-ThinkPad-T470s:~$


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I hope you can help resolve this issue.

Thanks,
Zoran

[mlukaszek]

Are you running with secure boot on? In this case you'd have to sign the evdi kernel module yourself, or disable secure boot.

Cheers,
Michal

[jeremyco]

Hi Michal,

Thank you for your quick response. SecureBoot was turned on, but even after I turned it off, it doesn't work. At one point after computer restart, I got Ubuntu crashed due to the problem with DisplayLink. Please check attached screenshots.

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I also can login only on "Ubuntu Xorg" but not on "Ubuntu". I've tried uninstalling and installing again.


Thanks,
Zoran

[jeremyco]

I've solved the issue by installing LinuxMint 18.3 instead of Ubuntu. It started to work immediately, and I have a picture on both my external monitors. The only issue I have now is a laggy mouse

[compuguy]

I've solved the issue by installing LinuxMint 18.3 instead of Ubuntu. It started to work immediately, and I have a picture on both my external monitors. The only issue I have now is a laggy mouse

You do know that Linux Mint is based on Ubuntu? That version you installed is based on the last LTS release, 16.04. That and 16.04 still uses Xorg/X11 while 17.10 uses Wayland by default. Disabling wayland on login seems to help as well: https://askubuntu.com/questions/975094/how-to-disable-wayland-in-17-10-in-gdm3-login-screen/975188

[jeremyco]

You do know that Linux Mint is based on Ubuntu? That version you installed is based on the last LTS release, 16.04. That and 16.04 still uses Xorg/X11 while 17.10 uses Wayland by default. Disabling wayland on login seems to help as well: https://askubuntu.com/questions/975094/how-to-disable-wayland-in-17-10-in-gdm3-login-screen/975188

Yes. I know LinuxMint is based on Ubuntu, and in my second response I wrote that I can't login to Wayland but only to Xorg, so it didn't work with Xorg. I've already investigated all tricks suggested on this forum and nothing helped.
Finally, after I installed Ubuntu 17.10 back again (though previous one was also fresh install) it started working without any workaround. I don't know why, but it looks like something was off, and having Ubuntu reinstalled have solved that.

[compuguy]

Yes. I know LinuxMint is based on Ubuntu, and in my second response I wrote that I can't login to Wayland but only to Xorg, so it didn't work with Xorg. I've already investigated all tricks suggested on this forum and nothing helped.
Finally, after I installed Ubuntu 17.10 back again (though previous one was also fresh install) it started working without any workaround. I don't know why, but it looks like something was off, and having Ubuntu reinstalled have solved that.


The big issue is the displaylink docks don't work with wayland (and I don't know when they will support wayland).