Bug 108555 - Xorg loads, no display on 4.15.0-38 and 4.15.0-39, works on 4.15.0-36
Summary: Xorg loads, no display on 4.15.0-38 and 4.15.0-39, works on 4.15.0-36
Alias: None
Product: xorg
Classification: Unclassified
Component: Server/General (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Xorg Project Team
QA Contact: Xorg Project Team
Depends on:
Reported: 2018-10-25 19:53 UTC by Cristian Aravena
Modified: 2018-12-13 22:41 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


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Description Cristian Aravena 2018-10-25 19:53:15 UTC

Open bug in launchpad.net

"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."

Best regards,
Cristian Aravena Romero (caravena)
Comment 1 Daniel van Vugt 2018-10-26 02:18:37 UTC
It appears to be a kernel issue, per the downstream bug report.
Comment 2 Tim Riker 2018-10-26 19:11:37 UTC
Looks like it happened the same time as a kernel upgrade, but it's not a kernel issue, it looks like an nvidia driver issue.
Comment 3 GitLab Migration User 2018-12-13 22:41:11 UTC
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