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 1799994
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.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: bionic
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https://bugs.launchpad.net/bugs/1799994
Title:
Xorg loads, no display on 4.15.0-38, works on 4.15.0-36
Status in linux package in Ubuntu:
Incomplete
Bug description:
Lenovo ThinkPad W540 docked with an ultradock. 3 external displays
running on VGA, DVI and display port all connected to the dock. BIOS
mode set to run external displays ONLY with nvidia chipset. prime-
select nvidia run.
When running under 4.15.0-36-generic with nvidia
390.77-0ubuntu0.18.04.1 I boot and all three external displays run
fine.
Upgrading to 4.15.0-38 and Xorg starts up, but none of the displays
light up.
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