Public bug reported: 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. ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete ** Tags: bionic ** Summary changed: - Xorg loads, no display + Xorg loads, no display on 4.15.0-38, works on 4.15.0-36 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1799994/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp