No output to extenal thunderbolt3 display on Disco 19.04 beta

[Betty Lin]

Summary: I use a XPS 13 9380. No output to external thunderbolt3 when connecting it via thunderbolt3 port.

Steps to reproduce:
Plugged in thunderbolt3 cable from thunderbolt disaply to XPS13 thunderbolt port.

Expected result:
The thunderbolt3 display should work

Actual result:
No output to external thunderbolt3 display

Additional information:
Thunderbolt3 display - ASUS-Display PA27AC

Failure rate: 100%

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bios-version: 1.2.1
system-product-name: XPS 13 9380
GPU: 00:02.0 VGA compatible controller: Intel Corporation Device 3ea0
CPU: Intel(R) Core(TM) i5-8265U CPU @ 1.60GHz (8x)
system-manufacturer: Dell Inc.

[Betty Lin (bettyl)]

Automatically attached

[Betty Lin (bettyl)]

Automatically attached

[Betty Lin (bettyl)]

Automatically attached

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1822242/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1822242

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Betty Lin (bettyl)]

Can't run the command "apport-collect 1822242" on the test machine.